Analog Devices Welcomes Hittite Microwave Corporation NO CONTENT ON THE ATTACHED DOCUMENT HAS CHANGED www.analog.com www.hittite.com THIS PAGE INTENTIONALLY LEFT BLANK HMC674LC3C v11.0714 COMPARATORS - SMT 10 GHz LATCHED COMPARATOR Typical Applications Features The HMC674LC3C is ideal for: Equivalent Input Bandwidth: 10 GHz * ATE Applications Propagation Delay: 85 ps * High Speed Instrumentation Overdrive & Slew Rate Dispersion: 10 ps * Digital Receiver Systems Minimum Pulse Width: 60 ps * Pulse Spectroscopy Resistor Programmable Hysteresis * High Speed Trigger Circuits Differential Latch Control * Clock & Data Restoration Power Dissipation: 140 mW RSCML Version Available 16 Lead 3x3 mm SMT Package: 9 mm 2 Functional Diagram General Description The HMC674LC3C is a SiGe monolithic, ultra fast comparator. The comparator supports 10 Gbps operation while providing 85 ps propagation delay and 60 ps minimum pulse width with 0.2 ps rms random jitter (RJ). Overdrive and slew rate dispersion are typically 10 ps, making the device ideal for a wide range of applications from ATE to broadband communications. The output stages are designed to directly drive 400 mV into 50 ohms terminated to Vtt = (Vcco - 2.0 V). The HMC674LP3E features high speed latch and programmable hysteresis and may be configured to operate in either latch mode, or as a tracking comparator. Electrical Specifications TA = +25C, Vcci= +3.3 V, Vcco = +2.0 V, Vee = -3 V, Vtt = 0 V Parameter Conditions Input Voltage Range Input Differential Voltage Max Units -2 Typ. +2 V -1.75 1.75 V Input Offset Voltage (VOS) 5 mV Input Offset Voltage, Temperature Coefficient 15 V / C Input Bias Current 15 uA Input Bias Current Temperature Coefficient 50 nA / C Input Offset Current 4 A Input Impedance 50 Common Mode Input Impedance 350 K Differential Input Impedance 15 K Active Gain 48 dB Common Mode Rejection Ratio 80 dB 1 mV Hysteresis 1 Min. Rhys = For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com HMC674LC3C v11.0714 10 GHz LATCHED COMPARATOR Latch Enable Characteristics Conditions Min. Typ. Each Pin 8 Max Units K Latch Enable to Output Delay, tPLOL , tPLOH VOD = 200 mV 85 ps Latch Enable Minimum Pulse Width, tPL VOD = 200 mV 20 ps Latch Enable Input Range VOD = 200 mV Latch Setup Time, tS VOD = 200 mV 1.6 Latch Hold Time, tH 2.4 V 45 ps -42 ps DC Output Characteristics, Vcco = +2.0 V, Vtt = 0 V Min. Typ. Max Units Output Voltage High Level, Voh Parameter Conditions 1.03 1.09 1.14 V Output Voltage Low Level, Vol 0.65 0.71 0.81 V Output Voltage Differential Swing 440 760 980 mVpp Conditions Min. Typ. Max Units VOD = 500 mV 80 85 110 AC Performance Parameter Propagation Delay - tPD, tPDL , tPDH Propagation Delay, Temperature Coefficient Propagation Delay Skew (Rising to Falling Transition) VOD [1] Dispersion tPD vs. Common Mode Dispersion, -1.75 V <Vcm <1.75 V ps / C VOD - 500 mV 10 ps 50 mV <VOD <1V 10 ps VOD = 500 mV 8 ps Noise (RTI) Deterministic Jitter (pp) Random Jitter (rms) ps 0.45 5.9 Equivalent Input Bandwidth [2] 8.6 9.3 nV/(Hz) RTI 12 GHz Deterministic Jitter at 10 Gbps with 100 mV Overdrive 2 ps Random Jitter at 10 Gbps with 100 mV Overdrive 0.2 ps rms VCM = 0; 100 mV Overdrive 60 ps Q / QB Rise Time From 20% to 80% 24 ps Q / QB Fall Time From 20% to 80% 15 ps Input Signal Minimum Pulse Width COMPARATORS - SMT Parameter Latch Enable Input Impedance [1] VOD is the input overdrive voltage, for example, (VINP - VINN - VOS) where VOS = input offset voltage. [2] Equivalent Input Bandwidth is calculated with the following formula: Bweq=0.22/ (TRCOMP2-TRIN2) where TRIN is the 20%/80% transition time of a quasi-Gaussian signal applied to the comparator input, and TRCOMP is the effective transition time digitized by the comparator. For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com 2 HMC674LC3C v11.0714 10 GHz LATCHED COMPARATOR Power Supply Requirements Conditions Min. Typ. Max Units 3.135 3.3 3.465 V V Vcco 1.0 2.0 2.5 Vee -3.15 -3.0 -2.85 V Input Supply Current, Icci 9 mA Output Supply Current, Icco 45 mA Vee Current, lee 19 mA Power Dissipation, Pd 140 mW PSRR, Vcci 38 dB PSRR, Vee 38 dB Dispersion vs. Overdrive Voltage Propagation Delay vs. Common Mode 11 15 12.5 9 10 DISPERSION (ps) 7 tPD COMPARATORS - SMT Parameter Vcci 5 7.5 5 2.5 3 0 1 -2.5 -1 -5 0 10 20 30 40 50 60 70 80 90 100 -2 OVERDRIVE VOLTAGE (mV) -1.5 -1 -0.5 0 0.5 1 1.5 2 COMMON MODE VOLTAGE (mV) Rising Edge Falling Edge Rising Edge Falling Edge Comparator Hysteresis vs. Rhys Control Resistor Output Voltage vs. Temperature 2.8 15 HYSTERESIS (mV) VOLTAGE (Volts) 2.6 2.4 2.2 10 5 2 1.8 -45 -32 -19 -6 7 20 33 TEMPERATURE (C) 46 59 72 85 0 100 1000 10000 RESISTANCE (Ohm) VOH VOL 3 For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com HMC674LC3C v11.0714 10 GHz LATCHED COMPARATOR COMPARATORS - SMT Timing Diagram Timing Descriptions Symbol Timing Description tPDH Input to output high delay Propagation delay measured from the time the input signal crosses the reference ( the input offset voltage) to the 50% point of an output low-to-high transition. tPDL Input to output low delay Propagation delay measured from the time the input signal crosses the reference ( the input offset voltage) to the 50% point of an output high-to-low transition. tPLOH Latch enable to output high delay Propagation delay measured from the 50% point of the latch enable signal high-to-low transition to the 50% point of an output low-to-high transition. tPLOL Latch enable to output low delay Propagation delay measured from the 50% point of the latch enable signal high-to-low transition to the 50% point of an output high-to-low transition. tH Minimum hold time Minimum time after the positive transition of the latch enable signal that the input signal must remain unchanged to be acquired and held at the outputs. tPL Minimum latch enable pulse width Minimum time that the latch enable signal must be low to acquire an input signal change. tS Minimum setup time Minimum time before the positive transition of the latch enable signal that an input signal change must be present to be acquired and held at the outputs. tR Output rise time Amount of time required to transition from a low to a high output as measured at the 20% and 80% points. tF Output fall time Amount of time required to transition from a high to a low output as measured at the 20% and 80% points. Voltage overdrive Difference between the input voltages VINP and VINN- VOD For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com 4 HMC674LC3C v11.0714 10 GHz LATCHED COMPARATOR COMPARATORS - SMT Operational Description The HMC674LC3C is a Latched Comparator with 10 GHz equivalent input bandwidth. The device is comprised of three blocks: 1) An input amplifier, 2) A latch, and 3) An Output Buffer. The latching circuit is level sensitive, and consists of a single high-speed latch. The HMC674LC3C comparator supports 10 Gb/s operation. The minimum input data latching pulse width is 60 ps. The HMC674LC3C operates in either Track (Transparent) Mode, where the output follows the logical value of the input, or the Latch (Hold) Mode, where the output value is held to the logical value of the comparison result of the input just prior to (LE - LE_bar) going HI. Track Mode operation is selected by either 1) (LE - LE_bar) LO, or 2) LE and LE_bar inputs floating. Latch Mode is selected by (LE - LE_bar) HI. The input impedance of the LE and LE_bar inputs is 8 k ohms, but these inputs can be terminated with 50 ohm external resistors if desired. When DC coupled, the clock inputs operate at an input common mode voltage of 2 V. In this case, any termination resistors would ideally be returned to 2 V. If the clock is AC coupled to the device, the input termination resistors can be returned to ground. Power Sequencing As long as the input signal is not near the -2 V extreme, either Vcc or Vee can be powered on first. However, if the input voltage is more negative than -1.8 V, we recommend the following power-up sequence. 1) Vee 2) Vcci and Vcco (if Vcco = Vcci) 3) Vcco (if different than ground). Power down would be the reverse of this sequence. It is also recommended that the device be powered before applying the input signal and also that the input signal be removed prior to power down. This is most important if any of the inputs are more negative than -1.8 V. 5 For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com HMC674LC3C v11.0714 10 GHz LATCHED COMPARATOR Input Supply Voltage (Vcci to GND) -0.5 V to +4 V Output Supply Voltage (Vcco to GND) -0.5 V to +4 V Positive Supply Voltage Differential (Vcci - Vcco) -0.5 V to +3.3 V Input Voltage -2 V to +2 V Differential Input Voltage -2 V to +2 V Input Voltage, Latch Enable -0.5 V to Vcci +0.5 V Applied Voltage (HYS) Vee to GND Maximum Input Current 20 mA Output Current 40 mA Junction Temperature 125C Continuous Pdiss (T = 85C) (Derate 20.4 mW/C above 85C) 0.816 W Thermal Resistance (Rth) (Junction to Lead) 49C/W Storage Temperature -65C to +150C Operating Temperature -40C to +85C ESD Sensitivity (HBM) Class 1A ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS COMPARATORS - SMT Absolute Maximum Ratings Outline Drawing NOTES: 1. PACKAGE BODY MATERIAL: ALUMINA 2. LEAD AND GROUND PADDLE PLATING: 30-80 MICROINCHES GOLD OVER 50 MICROINCHES MINIMUM NICKEL. 3. DIMENSIONS ARE IN INCHES [MILLIMETERS]. 4. LEAD SPACING TOLERANCE IS NON-CUMULATIVE. 5. PACKAGE WARP SHALL NOT EXCEED 0.05 mm DATUM -C6. ALL GROUND LEADS MUST BE SOLDERED TO PCB RF GROUND. 7. Paddle must BE SOLDERED TO Vee. Package Information Part Number Package Body Material Lead Finish HMC674LC3C Alumina, White Gold over Nickel MSL Rating MSL3 [1] Package Marking [2] H674 XXXX [1] Max peak reflow temperature of 260C [2] 4-Digit lot number XXXX For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com 6 HMC674LC3C v11.0714 10 GHz LATCHED COMPARATOR COMPARATORS - SMT Pin Descriptions Pin Number Function Description 1 VTP Termination resistor return pin for Vp Input. 2 INP Non-Inverting analog input 3 INN Inverting analog input 4 VTN Termination resistor return pin for Vn input 5, 16 Vcci Positive supply voltage input stage. 6 LE Latch enable bar input pin, inverting side. Refer to the Operational Description for more details. 7 LE Latch enable input pin, non-inverting side. Refer to the Operational Description for more details. 8 N/C Pin is not connected inside the package. Connect package pin to GND for improved noise. 9, 12 Vcco Positive supply voltage for the output stage. Q Inverting output. Q bar is at logic low if the analog voltage at the non-inverting input, INP, is greater than the analog voltage at the inverting input, INN, provided that the comparator is in compare mode. Refer to the Operational Description for more details. Q Non-inverting output. Q is at logic high if the analog voltage at the non-inverting input, INP, is greater than the analog voltage at the inverting input, INN, provided that the comparator is in compare mode. Refer to the Operational Description for more details.. 14 HYS Hysteresis Control pin. This pin should be left disconnected for zero hysteresis. Connect to vee with a resistor to add the desired amount of hysteresis. Refer to hysteresis graph to determine the correct sizing of Rhys hysteresis control resistor. 13 Vee Negative power supply, -3 V. 15 RTN Return for ESD protection. Package Base Exposed paddle must be connected to Vee. 10 11 7 Interface Schematic For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com HMC674LC3C v11.0714 10 GHz LATCHED COMPARATOR Evaluation PCB COMPARATORS - SMT Front Side Back Side For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com 8 HMC674LC3C v11.0714 10 GHz LATCHED COMPARATOR COMPARATORS - SMT List of Materials for Evaluation PCB 125932 [1] Item Description J1 8 Pos. Vertical TIN J2 - J7 2.92 mm 40 GHz Jack J8 Terminal Strip, Single Row 3 Pin SMT JP1, JP2 2 Pos. Vertical TIN C1 - C3, C5, C6, C8 - C10 100 pF Capacitor, 0402 Pkg. C4, C7, C11 330 pF Capacitor, 0402 Pkg. C11 - C13 4.7 uF Tantalum TP1 - TP4 DC Pin, Swage Mount U1 HMC674LC3C Comparator PCB 125929 Evaluation PCB The circuit board used in the application should use RF circuit design techniques. Signal lines should have 50 ohm impedance while the package ground leads should be connected directly to the ground plane similar to that shown. A sufficient number of via holes should be used to connect the top and bottom ground planes in order to provide good RF grounding to 10 GHz. The evaluation circuit board shown is available from Hittite upon request. [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Rogers 4350 or Arlon 25FR Application Circuit 9 For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com HMC674LC3C v11.0714 10 GHz LATCHED COMPARATOR Output to Oscilloscope For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com COMPARATORS - SMT Application Circuit: Output Interfacing 10 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Analog Devices Inc.: 125932-HMC674LC3C