HMC676LP3E v01.0811 comparators - SMT 1 10 GHz LATCHED COMPARATOR WITH RSECL OUTPUT STAGE Typical Applications Features The HMC676LP3E is ideal for: Equivalent Input Bandwidth: 10 GHz • ATE Applications Propagation Delay: 100 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: 120 mW RSCML and RSPECL Versions Available 16 Lead 3 x 3 mm SMT Package: 9 mm 2 Functional Diagram General Description The HMC676LP3E is a SiGe monolithic, ultra fast comparator which features reduced swing (RS) ECL output drivers and latch inputs. The comparator supports 10 Gbps operation while providing 100 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 reduced swing ECL output stage is designed to directly drive 400 mV into 50 Ohms terminated to -2V. The HMC676LP3E 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 = +25 °C, Vcci= +3.3 V, Vcco = 0 V, Vee = -3 V, VTERM = -2 V Parameter Conditions Input Voltage Range Input Differential Voltage Typ. Max Units -2 2 V -1.75 1.75 V Input Offset Voltage ±5 mV Input Offset Voltage, Temperature Coefficient 15 µV / °C Input Bias Current 15 uA Input Bias Current Temperature Coefficient 50 nA / °C Input Offset Current 4 µA Input Impedance 50 Ω Common Mode Input Impedance 350 KΩ Differential Input Impedance 15 KΩ Active Gain 45 dB Common Mode Rejection Ratio 80 dB ±1 mV Hysteresis 1-1 Min. Rhys = ∞ For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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 [email protected] HMC676LP3E v01.0811 10 GHz LATCHED COMPARATOR WITH RSECL OUTPUT STAGE Parameter Conditions Latch Enable Input Impedance Min. Typ. Each Pin 8 Max Units KΩ Latch to Output Delay, tPLOL , tPLOH VOD = 200 mV 85 ps Latch 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, with 50 Ω to Vcco - 2 V Min. Typ. Max Units Output Voltage High Level, Voh Parameter Conditions -0.89 -0.89 -0.95 V Output Voltage Low Level, Vol -1.21 -1.25 -1.35 V Output Voltage Differential Swing 320 350 400 mV Conditions Min. Typ. Max Units VOD = 500 mV 70 100 130 AC Performance Parameter Propagation Delay - tPD, tPDL , tPDH Propagation Delay, Temperature Coefficient Propagation Delay Skew (Rising to Falling Transition) VOD 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 3 ps Noise (RTI) 5.9 Deterministic Jitter (pp) ps 0.45 Equivalent Input Bandwidth [1] 9 10 nV/√(Hz) RTI 16 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 60 ps Random Jitter (rms) Input Signal Minimum Pulse Width comparators - SMT 1 Latch Enable Characteristics Q / QB Rise Time From 20% to 80% 23 ps Q / QB Fall Time From 20% to 80% 13 ps Power Supply Requirements Parameter Conditions Min. Typ. Max Units Input Supply Current, Icci 8 Output Supply Current, Icco 45 mA mA Vee Current, lee 16 mA Power Dissipation, Pd 120 mW PSRR, Vcci 38 dB PSRR, Vee 38 dB Note 1: Equivalent Input Bandwidth is calculated with the following formula: Bweq=0.22/√ (TRCOMP2 -TRIN 2) 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, 20 Alpha Road, 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 [email protected] 1-2 HMC676LP3E v01.0811 Propagation Delay vs. Common Mode Dispersion vs. Overdrive Voltage 11 15 12.5 9 10 Rising Edge Falling Edge 7 ΔtPD DISPERSION (ps) comparators - SMT 1 10 GHz LATCHED COMPARATOR WITH RSECL OUTPUT STAGE 5 Rising Edge Falling Edge 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) -0.5 0 0.5 1 1.5 2 Comparator Hysteresis vs. Rhys Control Resistor -0.6 15 HYSTERESIS (mV) -0.8 VOLTAGE (Volts) -1 COMMON MODE VOLTAGE (mV) Output Voltage vs. Temperature -1 VOH VOL -1.2 -1.4 -45 -1.5 -32 -19 -6 7 20 33 46 59 72 10 85 5 0 100 1000 10000 RESISTANCE (Ohm) TEMPERATURE (C) Eye Diagram 1-3 For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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 [email protected] HMC676LP3E v01.0811 10 GHz LATCHED COMPARATOR WITH RSECL OUTPUT STAGE 1 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 low-to-high 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 low-to-high 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 high 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, 20 Alpha Road, 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 [email protected] 1-4 HMC676LP3E v01.0811 comparators - SMT 1 1-5 10 GHz LATCHED COMPARATOR WITH RSECL OUTPUT STAGE Operational Description The HMC676LP3E 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 RSECL Output Buffer. The latching circuit is level sensitive, and consists of a single high-speed latch. The HMC676LP3E comparator supports 10 Gb/s operation. The minimum input data latching pulse width is 60 ps. The HMC676LP3E 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. For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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 [email protected] HMC676LP3E v01.0811 10 GHz LATCHED COMPARATOR WITH RSECL OUTPUT STAGE 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 ±1 mA Output Current 40 mA Storage Temperature -65 °C to +150 °C Junction Temperature 125 °C Continuous Pdiss (T = 85 °C) (Derate 43.5 mW/°C above 85 °C) 1.74 W Thermal Resistance (Rth) (Junction to Lead) 23 °C/W Operating Temperature -40 °C to +85 °C ESD Sensitivity (HBM) Class 1A ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS comparators - SMT 1 Absolute Maximum Ratings Outline Drawing NOTES: 1. LEADFRAME MATERIAL: COPPER ALLOY 2. DIMENSIONS ARE IN INCHES [MILLIMETERS] 3. LEAD SPACING TOLERANCE IS NON-CUMULATIVE 4. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM. PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM. 5. PACKAGE WARP SHALL NOT EXCEED 0.05mm. 6. ALL GROUND LEADS MUST BE SOLDERED TO PCB RF GROUND. 7. REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED LAND PATTERN. 8. PADDLE MUST BE SOLDERED TO Vee. Package Information Part Number Package Body Material Lead Finish HMC676LP3E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL Rating MSL1 [1] Package Marking [2] H676 XXXX [1] Max peak reflow temperature of 260 °C [2] 4-Digit lot number XXXX For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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 [email protected] 1-6 HMC676LP3E v01.0811 comparators - SMT 1 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 1-7 10 GHz LATCHED COMPARATOR WITH RSECL OUTPUT STAGE Interface Schematic For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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 [email protected] HMC676LP3E 10 GHz LATCHED COMPARATOR WITH RSECL OUTPUT STAGE 1 Evaluation PCB Front Side comparators - SMT v01.0811 Back Side For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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 [email protected] 1-8 HMC676LP3E v01.0811 comparators - SMT 1 10 GHz LATCHED COMPARATOR WITH RSECL OUTPUT STAGE 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 µF Tantalum TP1 - TP4 DC Pin, Swage Mount U1 HMC676LP3E 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 25 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 1-9 For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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 [email protected] HMC676LP3E v01.0811 10 GHz LATCHED COMPARATOR WITH RSECL OUTPUT STAGE 1 comparators - SMT Notes: For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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 [email protected] 1 - 10