CPC1465 SHDSL/ISDN DC Termination IC Features Description * Meets wetting (sealing) current requirements per ITU-T G.991.2 * Integrated bridge rectifier for polarity correction * Uses inexpensive opto-coupler for dc signalling * Electronic inductor, breakover, and latch circuits * Current limiting and excess power protection circuits * ANSI SHDSL and ISDN compatible * MLT and SARTS compatible * Compatible with portable test sets * Excellent linearity * Compatible with GlobespanVirata and Conexant SHDSL transceiver chip set families * Small 16-pin SOIC package * Pin compatible with Agere LH1465AAE The CPC1465 is a dc termination IC used in Single-pair High-speed Digital Subscriber Line (SHDSL) and Integrated Services Digital Network subscriber line (ISDN) equipment. It provides a polarity insensitive dc termination for DSL loop sealing current and a recognizable device signature for MLT systems. The CPC1465 passes the low frequency ISDN signalling information to the NT1 via Clare's inexpensive LDA101 optocoupler. Ordering Information Part Number Description CPC1465D DC Termination IC, 16-pin SOIC, in tubes CPC1465DTR DC Termination IC, 16-pin SOIC, in tape and reel Applications * * * * * * Router and bridge customer premises equipment Leased line equipment T1/E1 network line cards and repeaters Network Termination 1 (NT1) equipment Mechanized Loop Test (MLT) networks Switched Access Remote Test System (SARTS) networks Figure 1. CPC1465 Typical 2-Wire dc Termination Application dc Blocking Capacitor CPC1465 1 TIP RING 2.2k 5% 4W PR+ 2 NC 3 NC 4 TIP 5 RING 6 NC 7 NC 8 PR- Electronic Inductor, Breakover, Latch, and Opto Driver Bridge Rectifier Current Limit and Excess Power Protection TC 16 NC 15 NC 14 RS 13 PD 12 NC 11 NC 10 1F 68 1% 1/4W Transceiver COM 9 LDA101 VCC 1 6 2 5 3 4 75k DS-CPC1465 - Rev. 1.0 www.clare.com Digital Control Circuitry 1 CPC1465 1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Package Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 Absolute Maximum Ratings at 25C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4 Electrical Characteristics at TA = 25C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 Application Signalling Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 3 3 4 8 2. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3. Manufacturing Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3.1 Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.2 Washing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2 www.clare.com Rev. 1.0 1. Specifications 1.1 Package Pinout 1.3 Absolute Maximum Ratings at 25C Parameter CPC1465 Minimum Maximum Unit Operating temperature -40 +85 C Storage temperature -40 +125 C 5 95 % Pin soldering temperature (15 seconds max) - +220 C Power dissipation - 1 W 12 PD Maximum Voltage (T to R, R to T)* - 300 V 6 11 NC NC 7 10 NC *Clare recommends the use of room-temperature-vulcanizing silicone RTV sealant on the tip and ring pins (pins 4 and 5) to guard against the possibility of arcing. PR- 8 9 COM PR+ 1 16 TC NC 2 15 NC Operating relative humidity NC 3 14 NC TIP 4 13 RS RING 5 NC 1.2 Pinout Pin Name 1 PR+ Protection resistor positive side 2 NC No connection 3 NC No connection 4 TIP Tip lead 5 RING Ring lead 6 NC No connection 7 NC No connection 8 PR- Protection resistor negative side Description 9 COM 10 NC No connection 11 NC No connection 12 PD Photo-diode (LED input current) Common 13 RS Current limiting resistor 14 NC No connection 15 NC No connection 16 TC Timing capacitor Rev. 1.0 Absolute maximum ratings are stress ratings. Stresses in excess of these ratings can cause permanent damage to the device. Functional operation of the device at conditions beyond those indicated in the operational sections of this data sheet is not implied. www.clare.com 3 CPC1465 1.4 Electrical Characteristics at TA = 25C Unless otherwise specified, minimum and maximum values are production testing requirements. Typical values are characteristic of the device and are the result of engineering evaluations. In addition typical values are provided for information purposes only and are not part of testing requirements. 1.4.1 DC Characteristics, Normal Operation, (see Figure 2 on page 5) and (see Figure 3 on page 5) Parameter Activate/Non-activate Voltage Conditions Off State Breakover current - Symbol Minimum Typical Maximum Unit VAN 30.0 35.0 39.0 V IBO - 0.5 1 mA DC Voltage drop Active State, 1 mA ISL 20 mA VON - 12.5 15 V DC leakage current VOFF = 20 V ILKG - 1.5 5 A Hold/Release current Active State IH/R 0.1 0.5 1.0 mA Minimum on current VON < 54 V IMIN1 20 38 - mA Minimum on current 54 V VON 100 V for 2 seconds, source resistance 200 to 4 k IMIN2 9.0 45 - mA Minimum on current VON > 100 V IMIN3 0 0.1 - mA Maximum on current VON 70 V IMAX1 - 38.4 70 mA Maximum on current VON > 70 V IMAX2 - - V ON ---------1k mA Photodiode drive current Active State IPD 0.2 0.3 10 mA 1.4.2 AC Characteristics, Normal Operation, (see Figure 4 on page 6) and (see Figure 5 on page 6) Parameter Conditions Symbol Minimum Typical Maximum Unit ac impedance 200 Hz to 50 kHz ZMT 10 38 - k Linearity distortion = 200 Hz to 40 kHz, ISL = 1 mA to 20 mA, VAPP 10.5 VPP D1 75 78 - dB Linearity distortion = 200 Hz to 40 kHz, ISL = 1 mA to 20 mA, VAPP 12 VPP D2 50 70 - dB Symbol Minimum Typical Maximum Unit 1.4.3 Transition Characteristics, Normal Operation, (see Figure 6 on page 7) Parameter Conditions Activate time (see Figure 7 on page 7) t1 3.0 13 50 ms Deactivate time (see Figure 8 on page 7) t2 3.0 - 100 ms 4 www.clare.com Rev. 1.0 Figure 2. I-V Requirements Template, 0 V to 50 V 1A IMAX1 100 mA VON Current 10 mA IMIN1 On State VAN 1 mA Transition Region 100 A IHR IBO 10 A 1 A ILKG Off State Transition Region 0 0 10 20 30 40 50 200 250 Absolute Voltage (V) Figure 3. I-V Requirements Template, 0 V to 250 V 1A 70 V, 70 mA IMAX1 100 mA IMAX2 54 V, 9 mA Current 10 mA IMIN1 IMIN2 1 mA 100 A 10 A 1 A 100 V, 0 mA 0 0 50 100 150 Absolute Voltage (V) Rev. 1.0 www.clare.com 5 CPC1465 Figure 4. Test Circuit for ac Impedance and Linearity 68 F DUT Vmt VAPP ac generator ISL 1 - 20 mA dc current source 1k Vsig 1000 x V mt Z mt = --------------------------V sig V mt 1000 Linearity = 20 log ---------------------------------------- + 20 log -----------V sig2ndHarmonic 67.5 Figure 5. Linearity Requirement Template Acceptable Linearity (dB) 75 Unacceptable 50 0 0 0.5 10.0 10.5 11.0 11.5 12.0 Applied ac Voltage (VPP) 6 www.clare.com Rev. 1.0 Figure 6. Test Circuit for Activate and Deactivate Times 1 F Pulse generator DUT 85 mH 85 Figure 7. Applied Waveform for Activation Test 43.5 V 40 V Source Impedance 200 to 4k t1 30 V 20 V 500 ms 10 V Measure 0 Figure 8. Applied Waveform for Deactivation Test 2.0 mA Current source limited to 30 V Measure 1.5 mA 500 ms 1.0 mA 0.5 mA t2 0 Rev. 1.0 www.clare.com 7 CPC1465 1.5 Application Signalling Characteristics These tests assume crowbar protection across the CPC1465 limiting peak potentials to 250 V. 1.5.1 LED Trigger Characteristics During MLT Signalling, (see Figure 9 on page 9) Parameter Applied ac Voltage Conditions Symbol Minimum Typical Maximum Unit - - 60 - 62 VPEAK Applied ac frequency - - 2 - 3 Hz Number of half-cycles applied - 1 6 - 10 - Total loop resistance - - 900 - 4500 - - - 1 - - TON 10 - - ms TOFF 10 - - ms Required opto-coupler response Number of pulses per half-cycle applied Pulse width (opto on) (see Figure 9 on page 9) Pulse width (opto off) 1.5.2 LED Trigger Characteristics During Dial Test Set Signalling, (see Figure 9 on page 9) Parameter Conditions Symbol Minimum Typical Maximum Unit Applied dc battery Voltage - - -43.5 - -56 VDC Frequency (pulses per second) - - 4 - 8 - Percent break - - 40 - 60 % Number of pulses - - 6 - 10 - Total Loop Resistance - - 200 - 4000 Number of pulses per make/break applied - - - 1 - - Pulse width (opto on) (see Figure 9 on page 9) TON 10 - - ms Pulse width (opto off) (see Figure 9 on page 9) TOFF 10 - - ms Required opto-coupler response 8 www.clare.com Rev. 1.0 Figure 9. Test Circuit for LED Operation RLOOP 200 - 4k 900 - 4.5k (MLT) Series rotary dial 25 1F + VBAT -43.5V to -56V 60VPEAK, 2 Hz - 3 Hz (MLT) 85 85mH 25 Shunt rotary dial RING TIP CPC1465 1F 1 PR+ TC 16 2 NC NC 15 3 NC NC 14 4 TIP RS 13 1 6 68 1% 1/4 W VCC 5V LDA101 5 RING PD 12 6 NC NC 11 2 5 7 NC NC 10 3 4 PR- COM 75k 2.2k 5% 4W 8 VOUT 9 Figure 10. Typical ISDN NT1 Application Diagram CPC1465 TIP 1 PR+ TC 16 2 NC NC 15 3 NC NC 14 4 TIP RS 68 1% 13 1/4 W 5 RING PD 12 1F LDA101 RING Rev. 1.0 3.6V 1 6 1F 6 NC NC 11 2 5 7 2.2k 5% 4W 8 NC NC 10 3 4 PR- COM 9 www.clare.com 9 CPC1465 2. Functional Description 2.1 Introduction The CPC1465 can be used for a number of designs that require a dc hold circuit such as SHDSL applications and ISDN NT1 applications. Typical SHDSL applications will use a circuit design similar to the one shown in Figure 1 "CPC1465 Typical 2-Wire dc Termination Application" on page 1 while the typical ISDN NT1 circuit design will be similar to the one shown in Figure 10 "Typical ISDN NT1 Application Diagram" on page 9. The DC Termination IC performs two functions in an NT1; as an electronic inductor which provides a low impedance dc termination with a high impedance ac termination, and second as part of the dc signalling system for testing line capability. The CPC1465 meets or exceeds the requirements for an NT1 dc termination as described in ANSI T1.601-1991. 2.1.1 Surge Protection The CPC1465 requires few external components (see Figure 1 on page 1). Although the CPC1465 is current limited, it is not an over voltage surge protector. Clare recommends the use of a crowbar-type surge protector that limits the line voltage applied to the CPC1465 to 250 V. The protection device must be able to withstand the surge requirements specified by the appropriate governing agency in regions where the product will be deployed. Teccor, Inc. and Bourns, Inc. make suitable surge protectors for most applications. Devices such as Teccor's P1800SC or P2000SC Sidactors and Bourns' TISP4220H3 or TISP4240H3 thyristors should provide suitable protection. The CPC1465 turn-on and turn-off timing circuits assure that the device will not turn on if a voltage greater than 43.5 V is applied for less than 3 ms, and that it will not turn off if loop current is interrupted for less than 3 ms. 2.1.4 Activation and Deactivation Current for the opto-coupler LED flows when the current in the CPC1465 exceeds 1 mA. The CPC1465 will turn on if a voltage above 43.5 V is applied for more than 50 ms, and it will turn off if 1 mA loop current is interrupted for more than 100 ms. See "Test Circuit for Activate and Deactivate Times" on page 7, "Applied Waveform for Activation Test" on page 7, and "Applied Waveform for Deactivation Test" on page 7 for more information. LED current is interrupted when loop current is interrupted. The current in the on state is determined by the battery voltage feed circuit and the loop resistance. 2.1.5 Fault Conditions If loop resistance is low or if the applied voltage is very high, the CPC1465 limits loop current to less than 70 mA. While limiting current, the CPC1465 shunts current through the 2.2 k resistor to prevent excess heating of the CPC1465. Voltage in excess of 100 V applied to the tip and ring interface will cause the CPC1465 to shut down with very little current flow. Removal of the excessive voltage automatically resumes normal operation. 2.1.2 Bridge Rectifier The bridge rectifier in the CPC1465 ensures that the device is polarity insensitive and provides consistent operational characteristics if the tip and ring leads are reversed. 2.1.3 Trigger The dc tip-lead to ring-lead I-V characteristics of the CPC1465 are shown in "I-V Requirements Template, 0 V to 50 V" on page 5, and in "I-V Requirements Template, 0 V to 250 V" on page 5. Application of battery voltage to the loop causes the CPC1465 to conduct when the voltage exceeds approximately 35 V. With sufficient voltage across the tip-lead and ring-lead terminals, the CPC1465 will conduct about 150 A of dc current for approximately 20 ms, then it turns on. The CPC1465 remains on as long as the loop current exceeds a nominal 0.5 mA. 10 www.clare.com Rev. 1.0 3. Manufacturing Information Figure 11. Mechanical Dimensions 0.4000.015 (10.1600.381) NOTES: 1. Coplanarity = 0.004 (0.1016) max. 2. Leadframe thickness does not include solder plating (1000 microinch maximum). 3. Sum of package height, standoff, and coplanarity does not exceed 0.083 (2.108). PIN 16 0.4080.005 (10.3630.127) 0.2950.005 (7.4930.127) PIN 1 0.050 TYP (1.270 TYP) 0.083 MAX (2.108 MAX.) SEE NOTE 3 0.025 X 45 (0.635 X 45) 0.016 TYP (0.406 TYP.) 0.350 TYP (8.890 TYP.) 0.040 TYP (1.016 TYP) 0.010 0.0005 (0.254 0.0127) LEAD TO PACKAGE STANDOFF: MIN: 0.001 (0.0254) MAX: 0.004 (0.102) DIMENSIONS INCHES (mm) 0.0200.004 (0.5080.1016) NOTE: The CPC1465 uses a slightly different package than the LH1465AAE. Some adjustment to printed-circuit-board pad layout may be needed for existing applications. Rev. 1.0 www.clare.com 11 CPC1465 Figure 12. Printed Circuit Board Layout Pattern 0.350 (8.890) 0.050 on center (1.270) 0.3830.002 on center 9.7280.051 DIMENSIONS INCHES (mm) Not drawn to scale 0.047 (1.193) 0.310 (0.787) Figure 13. Tape and Reel Packaging A0 6.50 R = 0.50 3.00 2.00 K1 2.30 B0 1.30 6.80 16.00 K0 2.70 7.50 12.00 1.50 A0 = 6.5 mm B0 = 10.3 mm K0 = 2.3 mm K1 = 2.7 mm 4.00 2.00 NOTES: 1. ALL DIMENSIONS ARE IN MILLIMETERS AND CARRY TOLERANCES OF EIA STANDARD 481-2. 2. THE TAPE COMPLIES WITH ALL "NOTES" FOR CONSTANT DIMENSIONS LISTED ON PAGE 5 OF EIA-481-2. 3.1 Soldering 3.1.1 Moisture Reflow Sensitivity Clare has characterized the moisture reflow sensitivity for this product using IPC/JEDEC standard J-STD-020A. Moisture uptake from atmospheric humidity occurs by diffusion. During the solder reflow process, in which the component is attached to the PCB, the whole body of the component is exposed to high process temperatures. The combination of 12 moisture uptake and high reflow soldering temperatures may lead to moisture induced delamination and cracking of the component. To prevent this, this component must be handled in accordance with IPC/JEDEC standard J-STD-020A per the labelled moisture sensitivity level (MSL), level 1. www.clare.com Rev. 1.0 3.1.2 Reflow Profile The maximum ramp rates, dwell times, and temperatures of the assembly reflow profile should not exceed those specified in IPC standard IPC-9502, table 2. Soldering processes are limited to 220 C component body temperature. 3.2 Washing Clare does not recommend ultrasonic cleaning of this part. For additional information please visit www.clare.com Clare, Inc. makes no representations or warranties with respect to the accuracy or completeness of the contents of this publication and reserves the right to make changes to specifications and product descriptions at any time without notice. Neither circuit patent licenses or indemnity are expressed or implied. Except as set forth in Clare's Standard Terms and Conditions of Sale, Clare, Inc. assumes no liability whatsoever, and disclaims any express or implied warranty relating to its products, including, but not limited to, the implied warranty of merchantability, fitness for a particular purpose, or infringement of any intellectual property right. The products described in this document are not designed, intended, authorized, or warranted for use as components in systems intended for surgical implant into the body, or in other applications intended to support or sustain life, or where malfunction of Clare's product may result in direct physical harm, injury, or death to a person or severe property or environmental damage. Clare, Inc. reserves the right to discontinue or make changes to its products at any time without notice. Specifications: DS-CPC1465 - Rev. 1.0 (c) Copyright 2004, Clare, Inc. All rights reserved. Printed in USA. 2/11/2004 Rev. 1.0 www.clare.com 13