5.7 kV rms, Signal Isolated CAN FD Transceiver ADM3056E Data Sheet FEATURES FUNCTIONAL BLOCK DIAGRAM ADM3056E VDD1 VDD2 CAN TRANSCEIVER THERMAL SHUTDOWN DIGITAL ISOLATOR SILENT DOMINANT TIMEOUT RS SLOPE MODE TXD CANH RXD CANL RXD STANDBY MODE TRANSCEIVER STANDBY STBY AUX IN AUX OUT GND1 GND2 14973-001 5.7 kV rms (8000 VPEAK) signal isolated CAN transceiver 1.7 V to 5.5 V supply range for VDD1 4.5 V to 5.5 V supply range for VDD2 ISO 11898-2:2016 compliant CAN FD Data rates up to 12 Mbps for CAN FD Low loop propagation delay of 150 ns maximum Extended common-mode range of 25 V Bus fault protection (CANH, CANL) of 40 V Low power standby supporting remote wake request Extra isolated signal for control (for example, termination switches) Slope control for reduced EMI Safety and regulatory approvals (pending) VDE Certificate of Conformity, VDE V 0884-10 VIORM = 849 VPEAK VIOSM = 8000 VPEAK (test: VPEAK = 12.8 kV) UL: 5700 V rms for 1 minute per UL 1577 CSA Component Acceptance 5A at 5 kV rms IEC 60950, IEC 61010 8.3 mm creepage/clearance with 16-lead SOIC package High common-mode transient immunity: 75 kV/s Industrial temperature range: -40C to +125C Figure 1. APPLICATIONS CANOpen, DeviceNet, and other CAN bus implementations Solar inverters and battery management Motor and process control Industrial automation Transport and infrastructure GENERAL DESCRIPTION The ADM3056E is a 5.7 kV rms isolated controller area network (CAN) physical layer transceiver. The ADM3056E fully meets the CAN flexible data rate (CAN FD) CAN FD ISO 118982:2016 requirements and is further capable of supporting data rates as high as 12 Mbps. The device employs Analog Devices, Inc., iCoupler(R) technology to combine a highly robust 3-channel isolator and a CAN transceiver into a single SOIC, surface-mount package. The ADM3056E provides galvanic isolation between the CAN controller and physical layer bus. Safety and regulatory approvals (pending) for 5.7 kV rms isolation voltage, 849 VPEAK working insulation voltage, 8 kV surge, and 8.3 mm creepage and clearance, ensure that the ADM3056E meets isolation requirements for high voltage applications. Rev. 0 Low propagation delays through the isolation support longer bus cables. Slope control mode is available for the standard CAN at low data rates. Standby mode can minimize power consumption when the bus is idle, or if the node goes offline. Silent mode allows the TXD input to be ignored for listen only functionality. Dominant timeout functionality protects against bus lock up in a fault condition, and current limiting and thermal shutdown features protect against output short circuits. The device is fully specified over the -40C to +125C industrial temperature range and is available in a 16-lead, increased creepage, wide-body SOIC package. Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 (c)2018 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com ADM3056E Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Theory of Operation ...................................................................... 17 Applications ....................................................................................... 1 CAN Transceiver Operation ..................................................... 17 Functional Block Diagram .............................................................. 1 Signal Isolation ........................................................................... 17 General Description ......................................................................... 1 Standby Mode ............................................................................. 17 Revision History ............................................................................... 2 Remote Wake Up ........................................................................ 17 Specifications..................................................................................... 3 Silent Mode ................................................................................. 17 Timing Specifications .................................................................. 5 RS .................................................................................................. 17 Insulation and Safety Related Specifications ............................ 7 Auxiliary Channel ...................................................................... 18 Package Characteristics ............................................................... 7 Integrated and Certified IEC EMC Solution .......................... 18 Regulatory Information ............................................................... 7 Fault Protection .......................................................................... 18 DIN V VDE V 0884-10 (VDE V 0884-10) Insulation Characteristics (Pending) ............................................................ 8 Fail-Safe Features ........................................................................ 18 Absolute Maximum Ratings ............................................................ 9 Applications Information .............................................................. 19 Thermal Resistance ...................................................................... 9 Radiated Emissions and PCB Layout ...................................... 19 ESD Caution .................................................................................. 9 PCB Layout ................................................................................. 19 Pin Configuration and Function Descriptions ........................... 10 Thermal Analysis ....................................................................... 19 Operational Truth Table ............................................................ 11 Insulation Lifetime ..................................................................... 19 Typical Performance Characteristics ........................................... 12 Outline Dimensions ....................................................................... 21 Test Circuits ..................................................................................... 15 Ordering Guide .......................................................................... 21 Thermal Shutdown .................................................................... 18 Terminology .................................................................................... 16 REVISION HISTORY 12/2018--Revision 0: Initial Version Rev. 0 | Page 2 of 21 Data Sheet ADM3056E SPECIFICATIONS All voltages are relative to their respective ground. 1.7 V VDD1 5.5 V, 4.5 V VDD2 5.5 V, -40C ambient temperature (TA) +125C, and STBY is low, unless otherwise noted. Typical specifications are at VDD1 = VDD2 = 5 V and TA = 25C, unless otherwise noted. Table 1. Parameter SUPPLY CURRENT Bus Side Standby Mode Symbol Min Typ Max Unit Test Conditions/Comments 3.5 mA 9 63 10 75 mA mA STBY high, AUXIN low, load resistance (RL) = 60 TXD and/or SILENT high, RL = 60 Fault condition, see the Theory of Operation section, RL = 60 Worst case, see the Theory of Operation section, RL = 60 38 43 52 45 50 65 mA mA mA 5 mA 2 mA IDD2 Recessive State (or Silent) Dominant State 70% Dominant/30% Recessive 1 Mbps 5 Mbps 12 Mbps Logic Side iCoupler Current Normal Mode IDD1 Standby Mode DRIVER Differential Outputs Recessive State, Normal Mode CANH, CANL Voltage Differential Output Voltage Dominant State, Normal Mode CANH Voltage CANL Voltage Differential Output Voltage Standby Mode CANH, CANL Voltage Differential Output Voltage Output Symmetry (VDD2 - VCANH - VCANL) Short-Circuit Current Absolute CANH CANL Steady State CANH CANL Logic Inputs (TXD, SILENT, STBY, AUXIN) Input Voltage High Low Complementary Metal-Oxide Semiconductor (CMOS) Logic Input Currents 1.6 TXD high, low, or switching; AUXIN low STBY high See Figure 21 TXD high, termination resistor (RL) and common-mode filter capacitor (CF) open VCANL, VCANH VOD 2.0 -500 3.0 +50 V mV VCANH VCANL VOD 2.75 0.5 1.5 1.4 1.5 4.5 2.0 3.0 3.3 5.0 V V V V V VCANL, VCANH VOD VSYM |ISC| -0.1 -200 -0.55 +0.1 +200 +0.55 V mV V 115 115 mA mA VCANH = -3 V VCANL = 18 V 115 115 mA mA VCANH = -24 V VCANL = 24 V 0.35 x VDD1 10 V V A Input high or low VIH VIL |IIH|, |IIL| 0.65 x VDD1 Rev. 0 | Page 3 of 21 TXD and SILENT low, CF open 50 RL 65 50 RL 65 50 RL 65 45 RL 70 RL = 2240 STBY high, RL and CF open RL = 60 , CF = 4.7 nF, RS low RL open ADM3056E Parameter RECEIVER Differential Inputs Differential Input Voltage Range Data Sheet Symbol Unit VHYS |IIN (OFF)| RINH, RINL RDIFF mR CINH, CINL CDIFF +0.5 +0.4 5.0 5.0 150 10 25 100 +0.03 6 20 -0.03 35 12 VOL VOH 0.2 V V V V mV A k k Test Conditions/Comments STBY high STBY high VCANH, VCANL = 5 V, VDD2 = 0 V mR = 2 x (RINH - RINL)/(RINH + RINL) pF pF 0.4 VDD1 - 0.2 2.4 V Output current (IOUT) = 2 mA IOUT = -2 mA V V IOS Output voltage (VOUT) = GND1 or VDD1 7 85 mA Input High, Recessive |CMH| 75 100 kV/s Input Low, Dominant |CML| 75 100 kV/s VSTB ISLOPE VSLOPE VHS 4.0 SLOPE CONTROL Input Voltage for Standby Mode Current for Slope Control Mode Slope Control Mode Voltage Input Voltage for High Speed Mode 1 Max See Figure 22, RXD capacitance (CRXD) open, -25 V < VCANL, and VCANH < +25 V -1.0 -1.0 0.9 1.15 Dominant Short-Circuit Current RXD COMMON-MODE TRANSIENT IMMUNITY 1 Typ VID Recessive Input Voltage Hysteresis Unpowered Input Leakage Current CANH, CANL Input Resistance Differential Input Resistance Input Resistance Matching CANH, CANL Input Capacitance Differential Input Capacitance Logic Outputs (RXD, AUXOUT) Output Voltage Logic Low Logic High RXD AUXOUT Min -240 2.1 1 V A V V Common-mode voltage (VCM) 1 kV, transient magnitude 800 V AUXIN high, TXD high, or CANH, CANL recessive AUXIN low, TXD low, or CANH, CANL dominant RS voltage (VRS) = 0 V RS current (IRS) = 10 A |CMH| is the maximum common-mode voltage slew rate that can be sustained while maintaining AUXOUT 2.4 V, CANH, CANL recessive, or RXD VDD1 - 0.2 V. |CML| is the maximum common-mode voltage slew rate that can be sustained while maintaining AUXOUT 0.4 V, CANH, CANL dominant, or RXD 0.4 V. The common-mode voltage slew rates apply to both rising and falling common-mode voltage edges. Rev. 0 | Page 4 of 21 Data Sheet ADM3056E TIMING SPECIFICATIONS All voltages are relative to their respective ground. 1.7 V VDD1 5.5 V, 4.5 V VDD2 5.5 V, -40C TA +125C, and STBY low, unless otherwise noted. Typical specifications are at VDD1 = VDD2 = 5 V and TA = 25C, unless otherwise noted. Table 2. Parameter DRIVER Maximum Data Rate Propagation Delay from TXD to Bus (Recessive to Dominant) Propagation Delay from TXD to Bus (Dominant to Recessive) Transmit Dominant Timeout RECEIVER Falling Edge Loop Propagation Delay (TXD to RXD) Full Speed Mode Slope Control Mode Rising Edge Loop Propagation Delay (TXD to RXD) Full Speed Mode Slope Control Mode Loop Delay Symmetry (Minimum Recessive Bit Width) 2 Mbps 5 Mbps 8 Mbps 12 Mbps CANH, CANL SLEW RATE STANDBY Minimum Pulse Width Detected (Receiver Filter Time) Wake-Up Pattern Detection Reset Time Normal Mode to Standby Mode Time Standby Mode to Normal Mode Time AUXILIARY SIGNAL Maximum Switching Rate AUXIN to AUXOUT Propagation Delay SILENT MODE Normal Mode to Silent Mode Time Silent Mode to Normal Mode Time Symbol Min Typ Max Unit tTXD_DOM 35 60 Mbps ns tTXD_REC 46 70 ns 12 tDT 1175 Test Conditions SILENT low, see Figure 2 TXD pin bit time (tBIT_TXD) = 200 ns, see Figure 23 RS pin pull-down resistance (RSLOPE) = 0 RL = 60 , CL = 100 pF s TXD low, see Figure 5 SILENT low, see Figure 2 and Figure 23 RL = 60 , CL = 100 pF CRXD = 15 pF 150 300 ns ns RSLOPE = 0 , tBIT_TXD = 200 ns RSLOPE = 47 k, tBIT_TXD = 1 s 150 300 ns ns RSLOPE = 0 , tBIT_TXD = 200 ns RSLOPE = 47 k, tBIT_TXD = 1 s 550 220 140 91.6 ns ns ns ns V/s tBIT_TXD = 500 ns tBIT_TXD = 200 ns tBIT_TXD = 125 ns tBIT_TXD = 83.3 ns RSLOPE = 47 k 5 4000 25 25 s s s s STBY high, see Figure 4 STBY high, see Figure 4 Not shown in timing figures Time until RXD valid, not shown in timing figures 25 kHz s Not shown in timing figures 100 100 ns ns TXD low, RSLOPE = 0 , see Figure 3 TXD low, RSLOPE = 0 , see Figure 3 tLOOP_FALL tLOOP_RISE tBIT_RXD 450 160 85 50 |SR| 7 tFILTER tWUPR tSTBY_ON tSTBY_OFF 1 1175 fAUX tAUX 20 tSILENT_ON tSILENT_OFF Rev. 0 | Page 5 of 21 40 50 ADM3056E Data Sheet Timing Diagrams TXD 0.7VDD1 0.3VDD1 VDD1 0.3VDD1 tBIT_TXD 5 x tBIT_TXD 0.9V 0.5V VOD, VID tTXD_REC tTXD_DOM tBIT_BUS 0.7VDD1 RXD 0V tLOOP_FALL 14973-002 tBIT_RXD VDD1 0.3VDD1 0V tLOOP_RISE Figure 2. Driver/Receiver Timing Diagram VDD1 TXD 0V VDD1 0.7 x VDD1 SILENT 0.3 x VDD1 0V 900mV 500mV tSILENT_ON 14973-003 VOD tSILENT_OFF Figure 3. Silent Mode Timing Diagram CANH CANL VID <tFILTER <tFILTER <tFILTER RXD (NO PRIOR WAKE-UP PATTERN) tFILTER tFILTER tFILTER tFILTER Figure 4. Wake-Up Pattern Detection and Filtered RXD in Standby Timing Diagram tDT 14973-103 TXD VOD Figure 5. Dominant Timeout Rev. 0 | Page 6 of 21 14973-030 tWUPR RXD (PRIOR WAKE-UP PATTERN) Data Sheet ADM3056E INSULATION AND SAFETY RELATED SPECIFICATIONS For additional information, see www.analog.com/icouplersafety. Table 3. Parameter Rated Dielectric Insulation Voltage Minimum External Air Gap (Clearance) Symbol L (I01) Value 5700 8.3 Unit V rms mm min Minimum External Tracking (Creepage) L (I02) 8.3 mm min Minimum Clearance in the Plane of the Printed Circuit Board (PCB Clearance) L (PCB) 8.3 mm min CTI 25.5 >600 I m min V Minimum Internal Gap (Internal Clearance) Tracking Resistance (Comparative Tracking Index) Material Group Test Conditions/Comments 1-minute duration Measured from input terminals to output terminals, shortest distance through air Measured from input terminals to output terminals, shortest distance path along body Measured from input terminals to output terminals, shortest distance through air, line of sight, in the PCB mounting plane Insulation distance through insulation DIN IEC 112/VDE 0303 Part 1 Material Group (DIN VDE 0110, 1/89, Table 1) PACKAGE CHARACTERISTICS Table 4. Parameter Resistance (Input to Output) 1 Capacitance (Input to Output)1 Input Capacitance 2 1 2 Symbol RI-O CI-O CI Min Typ 1013 1.5 4.0 Max Unit pF pF Test Conditions/Comments f = 1 MHz The device is considered a 2-terminal device. Pin 1 through Pin 8 are shorted together, and Pin 9 through Pin 16 are shorted together. Input capacitance is from any input data pin to ground. REGULATORY INFORMATION See Table 9 and the Insulation Lifetime section for the recommended maximum working voltages for specific cross isolation waveforms and insulation levels. The ADuM3056E is approved by the organizations listed in Table 5. Table 5. UL (Pending) 1 UL 1577 Component Recognition Program1 Single Protection, 5700 V rms Isolation Voltage CSA (Pending) Approved under CSA Component Acceptance Notice 5A CSA 60950-1-07+A1+A2 and IEC 60950-1, second edition, +A1+A2 VDE (Pending) 2 DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 Reinforced insulation, 849 VPEAK, VIOTM = 8 kVPEAK CQC (Pending) Certified under CQC11-471543-2012 GB4943.1-2011: Basic insulation at 830 V rms (1174 VPEAK) Reinforced insulation at 415 V rms (587 VPEAK) File 2471900-4880-0001 File (pending) Basic insulation at 830 V rms (1174 VPEAK) File E214100 1 2 Reinforced insulation at 415 V rms (587 VPEAK) IEC 60601-1 Edition 3.1: Basic insulation (1 mean of patient protection (MOPP)), 519 V rms (734 VPEAK) Reinforced insulation (2 MOPP), 261 V rms (369 VPEAK) CSA 61010-1-12 and IEC 61010-1 third edition Basic insulation at: 300 V rms mains, 830 V secondary (1174 VPEAK) Reinforced insulation at: 300 V rms mains, 415 V secondary (587 VPEAK) File 205078 In accordance with UL 1577, each ADM3056E is proof tested by applying an insulation test voltage 6840 V rms for 1 sec. In accordance with DIN V VDE V 0884-10, each ADM3056E is proof tested by applying an insulation test voltage 1592 VPEAK for 1 sec (partial discharge detection limit = 5 pC). The * marking branded on the component designates DIN V VDE V 0884-10 approval. Rev. 0 | Page 7 of 21 ADM3056E Data Sheet DIN V VDE V 0884-10 (VDE V 0884-10) INSULATION CHARACTERISTICS (PENDING) These isolators are suitable for reinforced electrical isolation only within the safety limit data. Protective circuits ensure the maintenance of the safety data. Table 6. Description Installation Classification per DIN VDE 0110 For Rated Mains Voltage 150 V rms For Rated Mains Voltage 300 V rms For Rated Mains Voltage 600 V rms Climatic Classification Pollution Degree per DIN VDE 0110, Table 1 Maximum Working Insulation Voltage Input to Output Test Voltage, Method B1 Test Conditions/Comments VIORM x 1.875 = Vpd (m), 100% production test, tini = tm = 1 sec, partial discharge < 5 pC Input to Output Test Voltage, Method A After Environmental Tests Subgroup 1 Symbol Characteristic Unit VIORM Vpd (m) I to IV I to IV I to IV 40/125/21 2 849 1592 VPEAK VPEAK 1274 VPEAK 1019 VPEAK VIOTM VIMPULSE 8000 8000 VPEAK VPEAK VIOSM VIOSM 9800 8000 VPEAK VPEAK TS PS RS 150 1.73 >109 C W Vpd (m) VIORM x 1.5 = Vpd (m), tini = 60 sec, tm = 10 sec, partial discharge < 5 pC VIORM x 1.2 = Vpd (m), tini = 60 sec, tm = 10 sec, partial discharge < 5 pC After Input and/or Safety Test Subgroup 2 and Subgroup 3 Highest Allowable Overvoltage Impulse 1.2 s rise time, 50 s, 50% fall time in air, to the preferred sequence Surge Isolation Voltage Basic Reinforced Safety Limiting Values VPEAK = 12.8 kV, 1.2 s rise time, 50 s, 50% fall time VPEAK = 12.8 kV, 1.2 s rise time, 50 s, 50% fall time Maximum value allowed in the event of a failure (see Figure 6) Maximum Junction Temperature Total Power Dissipation at 25C Insulation Resistance at TS VIO = 500 V 2.0 SAFE LIMITING POWER (W) 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0 0 50 100 150 AMBIENT TEMPERATURE (C) 200 14973-004 0.2 Figure 6. Thermal Derating Curve, Dependence of Safety Limiting Power Values with Ambient Temperature per DIN V VDE V 0884-10 Rev. 0 | Page 8 of 21 Data Sheet ADM3056E ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE Pin voltages with respect to GNDX on same side, unless otherwise stated. Table 7. Parameter VDD1, VDD2 Logic Side Input/Output (TXD, RXD, AUXIN, SILENT, STBY) CANH, CANL AUXOUT, RS Operating Temperature Range Storage Temperature Range Junction Temperature (TJ Maximum) Electrostatic Discharge (ESD) IEC 61000-4-2, CANH/CANL Across Isolation Barrier with Respect to GND1 Contact Discharge with Respect to GND2 Air Discharge with Respect to GND2 Human Body Model (All Pins, 1.5 k, 100 pF) Moisture Sensitivity Level (MSL) Rating -0.5 V to +6 V -0.5 V to VDD1 + 0.5 V -40 V to +40 V -0.5 V to VDD2 + 0.5 V -40C to +125C -65C to +150C 150C Thermal performance is directly linked to printed circuit board (PCB) design and operating environment. Careful attention to PCB thermal design is required. JA is the natural convection junction-to-ambient thermal resistance measured in a one cubic foot sealed enclosure. Table 8. Thermal Resistance Package Type RI-16-21 1 JA 72 Unit C/W JA is derived by simulation of the device on a 4-layer board in an enclosure with no airflow. See the Thermal Analysis section for thermal model definitions. ESD CAUTION 8 kV 8 kV 15 kV 4 kV 3 Stresses at or above those listed under Absolute Maximum Ratings may cause permanent damage to the product. This is a stress rating only; functional operation of the product at these or any other conditions above those indicated in the operational section of this specification is not implied. Operation beyond the maximum operating conditions for extended periods may affect product reliability. Table 9. Maximum Continuous Working Voltage 1 Parameter AC Voltage Bipolar Waveform Basic Insulation Reinforced Insulation Unipolar Waveform Basic Insulation Reinforced Insulation DC Voltage Basic Insulation Reinforced Insulation 1 2 Insulation Rating (20-Year Lifetime) 2 VDE 0884-11 Lifetime Conditions Fulfilled 849 VPEAK 707 VPEAK Lifetime limited by insulation lifetime per VDE-0884-11 Lifetime limited by insulation lifetime per VDE-0884-11 1697 VPEAK 1356 VPEAK Lifetime limited by insulation lifetime per VDE-0884-11 Lifetime limited by package creepage per IEC 60664-1 1660 VPEAK 830 VPEAK Lifetime limited by package creepage per IEC 60664-1 Lifetime limited by package creepage per IEC 60664-1 The maximum continuous working voltage refers to the continuous voltage magnitude imposed across the isolation barrier. See the Insulation Lifetime section for more details. Insulation capability without regard to creepage limitations. Working voltage may be limited by the PCB creepage when considering rms voltages for components soldered to a PCB (assumes Material Group I up to 1250 V rms), or by the SOIC_IC package creepage of 8.3 mm, when considering rms voltages for Material Group II. Rev. 0 | Page 9 of 21 ADM3056E Data Sheet PIN CONFIGURATION AND FUNCTION DESCRIPTIONS 1 2 16 GND2 15 AUXOUT RXD 3 ADM3056E 14 VDD2 SILENT 4 TOP VIEW (Not to Scale) 13 GND2 TXD 5 12 CANH STBY 6 11 CANL AUXIN 7 10 RS GND1 8 9 GND2 14973-005 VDD1 GND1 Figure 7. Pin Configuration Table 10. Pin Function Descriptions Pin No. 1 2, 8 3 4 Mnemonic VDD1 GND1 RXD SILENT 5 6 TXD STBY 7 9, 13, 16 10 AUXIN GND2 RS 11 12 14 15 CANL CANH VDD2 AUXOUT Description Power Supply, Logic Side, 1.7 V to 5.5 V. This pin requires 0.1 F and 0.01 F decoupling capacitors. Ground, Logic Side. Receiver Output Data. Silent Mode Select. Active with input high. Bring this input low or leave the pin unconnected (internal pull-down) for normal mode. Transmitter Input Data. This pin has a weak internal pull-up resistor to VDD1. Standby Mode Select. Active with input high. Bring this input low or leave the pin unconnected (internal pulldown) for normal mode. Auxiliary Channel Input. This pin sets the AUXOUT output. Ground, Bus Side. Slope Control Pin. Short this pin to ground for full speed operation or use a weak pull-down (for example, 47 k) for slope control mode. An input high signal places the CAN transceiver in standby. CAN Low Input/Output. CAN High Input/Output. Power Supply, Bus Side, 4.5 V to 5.5 V. This pin requires 0.1 F and 0.01 F decoupling capacitors. Isolated Auxiliary Channel Output per Auxiliary Input in Normal Mode. The state of AUXOUT is latched when STBY is high. By default, AUXOUT is low at startup or when VDD1 is unpowered. Rev. 0 | Page 10 of 21 Data Sheet ADM3056E OPERATIONAL TRUTH TABLE Table 11. Truth Table Power VDD1 VDD2 On On TXD Low SILENT Low Inputs1, 2 STBY AUXIN Low Low On On Low Low Low High On On High Low Low Low On On High Low Low High On On On On On On X X X High High X Low Low High On On X X On On X Off On On Off Low High X RS Low/ pull-down Low/ pull-down Low/ pull-down Low/ pull-down X X X Mode Normal/ slope mode Normal/ slope mode Normal/ slope mode Normal/ slope mode Listen only Listen only Standby4 X Low High Standby4 X X High High Standby4 Z Z Z Z X X X X Low/ pull-down X Normal/ slope mode Transceiver off 1 Z means high impedance within one diode drop of ground. X means don't care. Limited by tDT. 4 RS can only set the transceiver to standby mode. It does not control the digital isolator. 5 WUP means remote wake-up pattern. 2 3 Rev. 0 | Page 11 of 21 RXD Low Outputs AUXOUT Low CANH/CANL Dominant3 Low High Dominant3 High/per bus Low Recessive/set by bus High/per bus High Recessive/set by bus High/per bus High/per bus High/WUP5/ filtered High/WUP5/ filtered High/WUP5/ filtered Indeterminate Low High Last state Low Recessive/set by bus Recessive/set by bus High-Z, biased to GND2/ set by bus High-Z, based to GND2/ set by bus High-Z, biased to GND2/ set by bus Recessive/set by bus High Indeterminate High-Z Low High ADM3056E Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS 3.5 140 2.9 2.7 2.5 2.3 2.1 VDD1 VDD1 VDD1 VDD1 1.9 1.7 = 1.8V = 2.5V = 3.3V = 0.5V 1.5 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 DATA RATE (Mbps) 120 100 80 60 40 20 0 20 35 40 45 55 60 100 120 50 Figure 11. Single-Ended Slew Rate vs. RSLOPE 150 60 145 RECEIVER INPUT HYSTERESIS (mV) 55 50 45 40 35 30 VDD2 = 5.5V VDD2 = 5.0V VDD2 = 4.5V 5 10 135 130 125 120 115 110 105 20 0 140 15 DATA RATE (Mbps) 100 -40 0 20 40 60 80 TEMPERATURE (C) Figure 12. Receiver Input Hysteresis vs. Temperature Figure 9. Supply Current, IDD2 vs. Data Rate 63 4.0 61 3.5 59 3.0 57 tTXD_DOM (ns) 4.5 2.5 2.0 55 53 51 1.5 49 STBY HIGH STBY LOW, AUXIN HIGH STBY LOW, AUXIN LOW -20 0 20 40 60 TEMPERATURE (C) 80 100 120 VDD1 = 5.0V VDD1 = 1.8V 47 14973-110 0.5 Figure 10. Supply Current, IDD1 vs. Temperature (Inputs Idle, VDD1 = 5 V) Rev. 0 | Page 12 of 21 45 -40 10 60 TEMPERATURE (C) Figure 13. tTXD_DOM vs. Temperature (RSLOPE = 0 ) 110 14973-113 1.0 0 -40 -20 14973-112 25 14973-109 SUPPLY CURRENT, IDD2 (mA) 30 RSLOPE (k) Figure 8. Supply Current, IDD1 vs. Data Rate, AUXIN Low SUPPLY CURRENT, IDD1 (mA) 25 14973-111 SINGLE-ENDED SLEW RATE (V/s) 3.1 14973-108 SUPPLY CURRENT, IDD1 (mA) 3.3 Data Sheet ADM3056E 76 140 74 135 130 tLOOP_RISE (ns) 70 68 66 125 120 115 110 105 VDD1 = 5.0V VDD1 = 1.8V 5 15 25 35 45 55 65 75 85 95 105 TEMPERATURE (C) 100 -40 14973-114 62 -55 -45 -35 -25 -15 -5 VDD1 = 5.0V VDD1 = 1.8V 0 20 40 60 120 100 Figure 17. tLOOP_RISE vs. Temperature (RSLOPE = 0 ) 230 125 220 120 210 tLOOP_RISE (ns) 130 115 110 105 200 190 180 VDD1 = 5.0V VDD1 = 1.8V 100 -40 -20 0 20 40 60 80 120 100 TEMPERATURE (C) 14973-115 VDD1 = 5.0V VDD1 = 1.8V 230 220 210 200 190 180 170 160 10 60 110 TEMPERATURE (C) 14973-116 VDD1 = 5.0V VDD1 = 1.8V 150 -40 170 -40 10 60 110 TEMPERATURE (C) Figure 18. tLOOP_RISE vs. Temperature (RSLOPE = 47 k) Figure 15. tLOOP_FALL vs. Temperature (RSLOPE = 0 ) tLOOP_FALL (ns) 80 TEMPERATURE (C) Figure 14. tTXD_REC vs. Temperature (RSLOPE = 0 ) tLOOP_FALL (ns) -20 14973-117 64 Figure 16. tLOOP_FALL vs. Temperature (RSLOPE = 47 k) Rev. 0 | Page 13 of 21 14973-118 tTXD_REC (ns) 72 ADM3056E Data Sheet 2.32 2600 2.30 2550 2.28 2.26 2500 tDT (s) 2.22 2450 2.20 2400 2.18 2.16 2350 2.12 -40 -20 0 20 40 60 80 TEMPERATURE (C) 100 120 Figure 19. VOD vs. Temperature 2300 -40 -20 0 20 40 60 80 TEMPERATURE (C) Figure 20. tDT vs. Temperature Rev. 0 | Page 14 of 21 100 120 14973-120 2.14 14973-119 VOD (V) 2.24 Data Sheet ADM3056E TEST CIRCUITS TXD VOD RL 2 VCANH RL 2 CANH GND2 VCANL 14973-006 RDIFF CDIFF CANL GND2 14973-011 GND1 CF Figure 24. RDIFF and CDIFF Measured in Recessive State, Bus Disconnected Figure 21. Driver Voltage Measurement CANH CANH VID RXD CRXD RIN CIN RIN CIN GND2 GND2 Figure 22. Receiver Voltage Measurement Figure 25. RIN and CIN Measured in Recessive State, Bus Disconnected STBY SILENT CANH TXD CANL RL CL RXD CRXD GND2 RS NOTES 1. 1% TOLERANCE FOR ALL RESISTORS AND CAPACITORS. 14973-008 RSLOPE GND1 CANL 14973-012 GND1 14973-007 CANL Figure 23. Switching Characteristics Measurements Rev. 0 | Page 15 of 21 ADM3056E Data Sheet TERMINOLOGY IDD1 IDD1 is the current drawn by the VDD1 pin. This pin powers the logic side iCoupler digital isolator. IDD2 IDD2 is the current drawn by the VDD2 pin. This pin powers the bus side iCoupler digital isolator and transceiver. VOD and VID VOD and VID are the differential voltages from the transmitter or at the receiver on the CANH and CANL pins. tTXD_DOM tTXD_DOM is the propagation delay from a low signal on TXD to transition the bus to a dominant state. See Figure 2 for level definitions. tTXD_REC tTXD_REC is the propagation delay from a high signal on TXD to transition the bus to a recessive state. See Figure 2 for level definitions. tLOOP_FALL tLOOP_FALL is the propagation delay from a low signal on TXD to the bus dominant and transitions low on the RXD. See Figure 2 for level definitions. tLOOP_RISE tLOOP_RISE is the propagation delay from a high signal on TXD to the bus recessive and transitions high on the RXD. See Figure 2 for level definitions. tBIT_TXD tBIT_TXD is the bit time on the TXD pin as transmitted by the CAN controller. See Figure 2 for level definitions. tBIT_BUS tBIT_BUS is the bit time as transmitted by the transceiver to the bus. When compared with a given tBIT_TXD, a measure of bit symmetry from the TXD digital isolation channel and CAN transceiver can be determined. See Figure 2 for level definitions. tBIT_RXD tBIT_RXD is the bit time on the RXD output pin, which can be compared with tBIT_TXD for a round trip measure of pulse width distortion through the TXD digital isolation channel, the CAN transceiver, and back through the RXD isolation channel. See Figure 2 for level definitions. Wake-Up Pattern The wake-up pattern is the remote transmitted pattern required to trigger the low speed data transmission by the CAN transceiver while in standby mode. The pattern does not take the transceiver out of standby mode, and its effect on the transceiver times out. See Figure 4 for additional information. Rev. 0 | Page 16 of 21 Data Sheet ADM3056E THEORY OF OPERATION CAN TRANSCEIVER OPERATION The ADM3056E facilitates galvanically isolated communication between a CAN controller and the CAN bus. The CAN controller and the ADM3056E communicate with standard 1.8 V, 2.5 V, 3.3 V, or 5.0 V CMOS levels. The CAN bus has two states: dominant and recessive. The recessive state is present on the bus when the differential voltage between CANH and CANL is less than 0.5 V. In the recessive state, the CANH and CANL pins are set to high impedance and are loosely biased to a single-ended voltage of 2.5 V. A dominant state is present on the bus when the differential voltage between CANH and CANL is greater than 1.5 V. The transceiver transmits a dominant state by driving the single-ended voltage of the CANH pin to 3.5 V and the CANL pin to 1.5 V. The recessive and dominant states correspond to CMOS high on the RXD pin and CMOS low on the TXD pin, respectively. A dominant state from another node overwrites a recessive state on the bus. A CAN frame can be set for higher priority by using a longer string of dominant bits to gain control of the CAN bus during the arbitration phase. While transmitting, a CAN transceiver also reads back the state of the bus. When a CAN controller receives a dominant state while transmitting a recessive state during arbitration, the CAN controller surrenders the bus to the node still transmitting the dominant state. The node that gains control during the arbitration phase reads back only its own transmission. This interaction between recessive and dominant states allows competing nodes to negotiate for control of the bus while avoiding contention between nodes. Industrial applications can have long cable runs. These long runs can have differences in local earth potential. Different sources may also power nodes. The ADM3056E transceiver has a 25 V common-mode range (CMR) that exceeds the ISO 11898-2:2016 requirement and further increases the tolerance to ground variation. See the AN-1123 Application Note for additional information on CAN. SIGNAL ISOLATION The ADM3056E device provides galvanic signal isolation implemented on the logic side of the interface. The RXD and TXD isolation channels transmit with an on off keying (OOK) architecture on iCoupler digital isolation technology. The low propagation delay isolation, quick transceiver conversion speeds, and integrated form factor are critical for longer cable lengths and higher data speeds and reducing the total solution board space. The ADM3056E isolated transceiver reduces solution board space while increasing data transfer rates over discrete solutions. The VDD1 pin powers the logic side signal isolation. The voltage on this pin scales the digital interface logic from 1.7 V to 5.5 V, depending on the supply voltage to the VDD1 pin. TheVDD2 supply pin powers the bus side digital isolator and CAN transceiver and must be supplied with a nominal 5 V supply. STANDBY MODE The STBY pin engages a reduced power standby mode that modifies the operation of both the CAN transceiver and digital isolation channels. Standby mode disables the TXD signal isolation channel and sets the transmitter output to a high impedance state loosely biased to GND2. While in standby mode, the receiver filters bus data and responds only after the remote wake-up sequence is received. When entering or exiting standby mode, the TXD input must be kept high and the RXD output must be ignored for the full tSTBY_ON and tSTBY_OFF times. REMOTE WAKE UP The ADM3056E responds to the remote wake-up sequence as defined in ISO 11898-2:2016. When the CAN transceiver is presented with the defined slow speed, high to low to high sequence within the low wake-up pattern detection reset time (tWUPR), low speed data transmission is allowed. Receipt of the remote wake-up pattern does not bring the ADM3056E out of standby mode. The ADM3056E STBY pin must be brought low externally to exit standby mode. After the ADM3056E receives the remote wake-up pattern, the transceiver continues to receive low speed data until standby mode is exited. SILENT MODE Asserting the SILENT pin disables the TXD digital isolation channel. Any inputs to the TXD pin are ignored in this mode, and the transceiver presents a recessive bus state. The operation of the RXD channel is unaffected. The RXD channel continues to output data received from the internal CAN transceiver monitoring the bus. Silent mode is useful when paired with a CAN controller using automatic baud rate detection. A CAN controller must be set to the same data rate as all attached nodes. The CAN controller produces an error frame and ties up the bus with a dominant state when the received data rate is different from expected. Other CAN nodes then echo this error frame. While in silent mode, the error frames produced by the CAN controller are kept from interrupting bus traffic, and the controller can continue listening to bus traffic. RS The RS pin sets the transceiver in one of three different modes of operation: high speed, slope control, or standby. This pin cannot be left floating. For high speed mode, connect the RS pin directly to GND2. Ensure that the transition time of the CAN bus signals is as short as possible to allow higher speed signaling. A shielded cable is recommended to avoid electromagnetic interference (EMI) problems in high speed mode. Rev. 0 | Page 17 of 21 ADM3056E Data Sheet Slope control mode allows the use of unshielded twisted pair wires or parallel pair wires as bus lines. Slow the signal rise and fall transition times to reduce EMI and ringing in slope control mode. Adjust the rise and fall slopes by adding a resistor (RSLOPE) connected from RS to GND2. The slope is proportional to the current output at the RS pin. The RS pin can also set the CAN transceiver to standby mode, which occurs when the pin is driven to a voltage above VSTB. In standby mode, high speed data is filtered, and the CANH and CANL lines are biased to GND2. The RS pin can only set the CAN transceiver to standby mode. The state of the RS pin does not modify the operation of digital isolation channels or the auxiliary channel. AUXILIARY CHANNEL The auxiliary channel is available for low speed data transmission at up to 20 kHz (or 40 kbps nonreturn-to-zero format) when STBY is not asserted. The data rate limit of the channel allows the data channel to be shared by the STBY signal. In standby mode, or when STBY is driven high, the operation of the channel is modified to share the multiplexed signal path with the STBY signal (see Figure 1). The AUXOUT pin remains latched in the state when STBY is asserted. Periodic pulses (<25 s wide) are sent to indicate that the logic side is powered and remains in standby mode. In applications where AUXOUT may be shorted to GND2 or VDD2, add a series resistance to the output channel. INTEGRATED AND CERTIFIED IEC EMC SOLUTION Typically, designers must add protection against harsh operating environments while also making the device as small as possible. To reduce board space and the design effort needed to meet the system level ESD standards, the ADM3056E has robust protection circuitry on chip for the CANH and CANL pins. FAULT PROTECTION High voltage miswire events commonly occur when the system power supply is connected directly to the CANH and the CANL bus lines during assembly. Supplies may also be shorted by accidental damage to the fieldbus cables while the system is operating. Accounting for inductive kickback and switching effects, the ADM3056E isolated transceiver CAN bus lines are protected against these miswire or shorting events in systems with up to nominal 24 V supplies. The CANH and CANL signal lines can withstand a continuous supply short with respect to GND2 or between the CAN bus lines without damage. This level of protection applies when the device is either powered or unpowered. FAIL-SAFE FEATURES In cases where the TXD input pin is allowed to float, to prevent bus traffic interruption, the TXD input channel has an internal pull-up to the VDD1 pin. The pull-up holds the transceiver in the recessive state. The ADM3056E features a dominant timeout (tDT in Table 2). A TXD line shorted to ground or malfunctioning CAN controller are examples of how a single node can indefinitely prevent further bus traffic. The dominant timeout limits how long the transceiver can transmit in the dominant state. When the TXD pin is presented with a logic high, normal TXD functionality is restored. The tDT minimum also inherently creates a minimum data rate. Under normal operation, the CAN protocol allows five consecutive bits of the same polarity before stuffing a bit of the opposite polarity into the transmitting bit sequence. When an error is detected, the CAN controller purposely violates the bit stuffing rules by producing six consecutive dominant bits. At any given data rate, the CAN controller must transmit as many as 11 consecutive dominant bits to effectively limit the ADM3056E minimum data rate to 9600 bps. THERMAL SHUTDOWN The ADM3056E contains thermal shutdown circuitry that protects the device from excessive power dissipation during fault conditions. Shorting the driver outputs to a low impedance source can result in high driver currents. The thermal sensing circuitry detects the increase in die temperature under this condition and disables the driver outputs. The circuitry disables the driver outputs when the die temperature reaches 175C. When the die has cooled, the drivers are enabled again. Rev. 0 | Page 18 of 21 Data Sheet ADM3056E APPLICATIONS INFORMATION RADIATED EMISSIONS AND PCB LAYOUT THERMAL ANALYSIS The ADM3056E isolated CAN transceiver is designed to pass EN55022 Class B by 6 dB on a simple 2-layer PCB design. Stitching capacitance or surface-mount technology (SMT) safety capacitors are not required to meet this emissions level. The ADM3056E consists of three internal die attached to a split lead frame with two die attach pads. For the purposes of thermal analysis, the die are treated as a thermal unit, with the highest junction temperature reflected in the JA value from Table 8. The JA value is based on measurements taken with the devices mounted on a JEDEC standard, 4-layer board with fine width traces and still air. Under normal operating conditions, the ADM3056E can operate at full load across the full temperature range without derating the output current. PCB LAYOUT The ADM3056E digital isolator requires no external interface circuitry for the logic interfaces. Power supply bypassing is strongly recommended at the input and output supply pins (see Figure 26). Bypass capacitors are most conveniently connected between Pin 1 and Pin 2 for VDD1 and between Pin 15 and Pin 16 for VDD2. The recommended bypass capacitor value is between 0.01 F and 0.1 F. The total lead length between both ends of the capacitor and the input power supply pin must not exceed 10 mm. Bypassing between Pin 1 and Pin 8 and between Pin 9 and Pin 16 must also be considered, unless the ground pair on each package side is connected close to the package. 2 3 4 5 6 7 8 VDD1 GND1 RXD GND2 AUX OUT VDD2 SILENT GND2 TXD CANH STBY CANL AUX IN RS GND1 GND2 16 15 14 0.01F 0.1F 13 12 11 10 9 RSLOPE All insulation structures eventually break down when subjected to voltage stress over a sufficiently long period. The rate of insulation degradation is dependent on the characteristics of the voltage waveform applied across the insulation as well as on the materials and material interfaces. The two types of insulation degradation of primary interest are breakdown along surfaces exposed to the air and insulation wear out. Surface breakdown is the phenomenon of surface tracking and the primary determinant of surface creepage requirements in system level standards. Insulation wear out is the phenomenon where charge injection or displacement currents inside the insulation material cause long-term insulation degradation. Surface Tracking 14973-025 0.1F 0.01F 1 ADM3056E INSULATION LIFETIME Figure 26. Recommended Printed Circuit Board Layout In applications involving high common-mode transients, ensure that board coupling across the isolation barrier is minimized. Furthermore, design the board layout such that any coupling that does occur equally affects all pins on a given component side. Failure to ensure this coupling can cause voltage differentials between pins exceeding the absolute maximum ratings of the device, thereby leading to latch-up or permanent damage. Note that the total lead length between the ends of the low equivalent series resistance (ESR) capacitor and the input power supply pin must not exceed 2 mm. Installing the bypass capacitor with traces more than 2 mm in length may result in data corruption. Surface tracking is addressed in electrical safety standards by setting a minimum surface creepage based on the working voltage, the environmental conditions, and the properties of the insulation material. Safety agencies perform characterization testing on the surface insulation of components that allows the components to be categorized in different material groups. Lower material group ratings are more resistant to surface tracking and, therefore, can provide adequate lifetime with smaller creepage. The minimum creepage for a given working voltage and material group is in each system level standard and is based on the total rms voltage across the isolation, pollution degree, and material group. The material group and creepage for the ADM3056E isolator is presented in Table 3 for the 16-lead SOIC with increased creepage package. Rev. 0 | Page 19 of 21 ADM3056E Data Sheet Testing and modeling have shown that the primary driver of long-term degradation is displacement current in the polyimide insulation causing incremental damage. The stress on the insulation can be broken down into broad categories, such as dc stress, which causes very little wear out because there is no displacement current, and an ac component time varying voltage stress, which causes wear out. The ratings in certification documents are typically based on 60 Hz sinusoidal stress to reflect isolation from the line voltage. However, many practical applications have combinations of 60 Hz ac and dc across the barrier as shown in Equation 1. Because only the ac portion of the stress causes wear out, the equation can be rearranged to solve for the ac rms voltage, as is shown in Equation 2. For insulation wear out with the polyimide materials used in these products, the ac rms voltage determines the product lifetime. VRMS = VAC RMS 2 + VDC 2 (1) VAC RMS = VRMS 2 - VDC 2 (2) Calculation and Use of Parameters Example The following example frequently arises in power conversion applications. Assume that the line voltage on one side of the isolation is 240 V ac rms and a 400 V dc bus voltage is present on the other side of the isolation barrier. The isolator material is polyimide. To establish the critical voltages in determining the creepage, clearance, and lifetime of a device, see Figure 27 and the following equations. VRMS VPEAK VDC TIME Figure 27. Critical Voltage Example The working voltage across the barrier from Equation 1 is VRMS = VAC RMS 2 + VDC 2 VRMS = 240 2 + 400 2 VRMS = 466 V This VRMS value is the working voltage used together with the material group and pollution degree when looking up the creepage required by a system standard. To determine if the lifetime is adequate, obtain the time varying portion of the working voltage. To obtain the ac rms voltage, use Equation 2. VAC RMS = VRMS 2 - VDC 2 or where: VRMS is the total rms working voltage. VAC RMS is the time varying portion of the working voltage. VDC is the dc offset of the working voltage. VAC RMS 14973-026 The lifetime of insulation caused by wear out is determined by its thickness, material properties, and the voltage stress applied. It is important to verify that the product lifetime is adequate at the application working voltage. The working voltage supported by an isolator for wear out may not be the same as the working voltage supported for tracking. The working voltage applicable to tracking is specified in most standards. ISOLATION VOLTAGE Insulation Wear Out VAC RMS = 466 2 - 400 2 VAC RMS = 240 V rms In this case, the ac rms voltage is simply the line voltage of 240 V rms. This calculation is more relevant when the waveform is not sinusoidal. The value is compared to the limits for working voltage in Table 9 for the SOIC_IC package, for the expected lifetime, which is less than a 60 Hz sine wave, and it is well within the limit for a 50-year service life. Note that the dc working voltage limit is set by the creepage of the package as specified in IEC 60664-1. This value can differ for specific system level standards. Rev. 0 | Page 20 of 21 Data Sheet ADM3056E OUTLINE DIMENSIONS 12.95 12.80 12.65 9 16 7.60 7.50 7.40 1 10.55 10.30 10.05 8 PIN 1 INDICATOR TOP VIEW 2.44 2.24 0.76 0.25 0.25 BSC GAGE PLANE 45 0.33 0.23 END VIEW 0.49 0.35 1.27 0.41 COMPLIANT TO JEDEC STANDARDS MS-013-AC 8 0 12-13-2017-B SEATING PLANE 1.27 BSC PKG-004586 0.25 0.10 COPLANARITY 0.10 SIDE VIEW 2.64 2.50 2.36 Figure 28. 16-Lead Standard Small Outline Package with Increased Creepage [SOIC_IC] Wide Body (RI-16-2) Dimensions shown in millimeters ORDERING GUIDE Model 1 ADM3056EBRIZ ADM3056EBRIZ-RL EVAL-ADM3056EEBZ 1 Temperature Range -40C to +125C -40C to +125C Package Description 20-Lead Standard Small Outline Package with Increased Creepage [SOIC_IC] 20-Lead Standard Small Outline Package with Increased Creepage [SOIC_IC] ADM3056E Evaluation Board Z = RoHS Compliant Part. (c)2018 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D14973-0-12/18(0) Rev. 0 | Page 21 of 21 Package Option RI-16-2 RI-16-2