HMC875LC3C v04.0810 COMPARATORS - SMT 1 20 Gbps Clocked COMPARATOR with RSCML OUTPUT STAGE Typical Applications Features The HMC875LC3C is ideal for: Propagation Delay Clock to Output: 120 ps • ATE Applications Overdrive & Slew Rate Dispersion: 10 ps • High Speed Instrumentation Minimum Pulse Width: 60 ps • Digital Receiver Systems Resistor Programmable Hysteresis • Pulse Spectroscopy Differential Clock Control • High Speed Trigger Circuits Input Bandwidth: 10 GHz • Clock & Data Restoration Power Dissipation: 130 mW RSPECL and RSECL Versions Available 16 Lead 3x3mm SMT Package: 9mm 2 Functional Diagram General Description The HMC875LC3C is a SiGe monolithic, ultra fast comparator which features reduced swing CML output drivers and clock inputs. The comparator supports 20 Gbps operation while providing 120 ps clock to data output delay and 60 ps minimum pulse width with 0.2 ps rms random jitter (RJ). 25 Gbps operation can be achieved with reduced output voltage swing. 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 CML output stage is designed to directly drive 400 mV into 50 Ohms terminated to GND. The HMC875LC3C features high speed latches with programmable hysteresis, and is configured to operate as a clocked comparator. Electrical Specifications TA = +25C Vcci= +3.3V, Vcco = 0V, CLK / CLK = 1.6V to 2.4V, Vee = -3V, VTERM = 0V 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 15 KΩ ±1 mV Differential Input Impedance 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] HMC875LC3C v04.0810 20 Gbps Clocked COMPARATOR with RSCML OUTPUT STAGE Parameter Conditions Clock Enable Input Impedance Min. Each Pin Typ. Max Units 50 Clock to Data Output Delay, tpd Ω 120 Clock Enable Input Range 1.6 Clock Max Frequency, fmax ps 2.4 25 V GHz DC Output Characteristics, Vcco = 0V with 50Ω to VTERM = 0V Parameter Conditions Min. Typ. Max Units Output Voltage High Level, Voh -10 0 mV Output Voltage Low Level, Vol -420 -330 mV Output Voltage Differential Swing 330 420 mV Max Units AC Performance Parameter Conditions VOD Dispersion Tpd vs. Common Mode Dispersion, -1.75V <Vcm <1.75V Typ. 50mV < VOD < 1V 10 ps VOD = 50 mV 3 ps Equivalent Input Bandwidth [1] Deterministic Jitter (pp) Min. 8.3 9.6 11.2 GHz Deterministic Jitter at 10 Gbps with ±100mV Overdrive <3 ps Random Jitter at 10 Gbps with ±100mV Overdrive 0.2 ps rms 60 ps Random Jitter (rms) Minimum Pulse Width COMPARATORS - SMT 1 Latch Enable Characteristics Q / Q Rise Time From 20% to 80% 28 ps Q / Q Fall Time From 20% to 80% 22 ps Power Supply Requirements Parameter Input Supply Current, Icci Conditions Min. Typ. Max Units 12 mA Output Supply Current, Icco 9 mA Vee Current, lee 29 mA Power Dissipation, Pd 130 mW PSRR, Vcci 35 dB PSRR, Vee 35 dB (TRCOMP2 -TRIN 2) Note 1: Equivalent Input Bandwidth is calculated with the following formula: Bweq=0.22/√ 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 HMC875LC3C v04.0810 Propagation Delay vs. Input Common Mode Voltage[1] Dispersion vs. Overdrive Voltage 11 15 12.5 9 10 Rising Edge Falling Edge 7 ΔtPD (ps) DISPERSION (ps) COMPARATORS - SMT 1 20 Gbps Clocked COMPARATOR with RSCML OUTPUT STAGE 5 Rising Edge Falling Edge 7.5 5 2.5 3 0 1 -2.5 -5 -1 0 10 20 30 40 50 60 70 80 90 100 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 85 100 COMMON MODE VOLTAGE (mV) OVERDRIVE VOLTAGE (mV) Output Voltage vs. Temperature Voltage Swing vs. Temperature 0.45 0.1 0 0.44 VOLTAGE (V) VOLTAGE (V) -0.1 VOH VOL -0.2 -0.3 0.43 0.42 -0.4 0.41 -0.5 -0.6 -50 -35 -20 -5 10 25 40 55 70 85 0.4 -50 100 -35 -20 -5 Delay vs. Temperature 40 55 70 200 tr tf 35 180 30 POWER (mW) DELAY (ps) 25 Power Dissipation vs. Temperature 40 25 20 160 140 120 15 10 -50 10 TEMPERATURE (C) TEMPERATURE (C) -35 -20 -5 10 25 40 55 70 TEMPERATURE (C) 85 100 100 -50 -35 -20 -5 10 25 40 55 70 85 100 TEMPERATURE (C) [1] Vcci= +3.3V, Vcco = 0V, Vee = -3V, V TERM = 0V 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] HMC875LC3C v04.0810 20 Gbps Clocked COMPARATOR with RSCML OUTPUT STAGE 25 40 35 CURRENT (mA) 20 HYSTERESIS (mV) 1 Currents vs. Temperature 15 10 5 30 25 I_Vcco I_Vee I_Vcci 20 15 10 0 1 10 100 1000 5 -50 -35 -20 -5 RESISTANCE (Ohm) 10 25 40 55 70 85 100 TEMPERATURE (C) Comparator Hysteresis vs. Clock Frequency (Rhys = ∞) Eye Diagram COMPARATORS - SMT Comparator Hysteresis vs. Rhys Control Resistor 10 HYSTERESIS (mV) 8 6 4 2 0 1 10 100 FREQUENCY (MHz) TJ(1E-12): 6.71 ps Absolute Maximum Ratings Input Supply Voltage (Vcci to GND) -0.5V to +4V Output Supply Voltage (Vcco to GND) -0.5V to +4V Positive Supply Differential (Vcci - Vcco) -0.5V to +3.5V RJ(-): 310 fs PJ(rms) 0.0 s DJ-): 3.08 ps RJ(rms): 265 fs DDJ(p-p): 3.24 ps DCD: ------ ISI J(p-p) 3.24 ps Bit Rate 5.00000 Gb/s 127 Bits 1:8 Input Voltage -2V to +2V Pat Length Differential Input Voltage -2V to +2V Div. Ratio Input Voltage, Latch Enable -0.5V to Vcci +0.5V Applied Voltage (HYS) Vee to GND Maximum Input Current ±1 mA Output Current 20 mA Junction Temperature 125°C Continuous Pdiss (T = 85°C) (Derate 20.4 mW/°C above 85°C) 0.816 W Thermal Resistance (Rth) (Junction to Lead) 49 °C/W Storage Temperature -65°C to +150°C Operating Temperature -40°C to +85°C ESD Sensitivity (HBM) Class 1A ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS 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 HMC875LC3C v04.0810 Timing Diagram COMPARATORS - SMT 1 20 Gbps Clocked COMPARATOR with RSCML OUTPUT STAGE 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 0.05mm DATUM -C6. ALL GROUND LEADS MUST BE SOLDERED TO PCB RF GROUND. 7. PADDLE MUST NOT BE DC GND. THERMAL DISSIPATION PATH ONLY. 1-5 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] HMC875LC3C v04.0810 20 Gbps Clocked COMPARATOR with RSCML OUTPUT STAGE Pin Number Function Description 1 VTP Termination resistor return pin for INP Input. 2 INP Non-Inverting analog input 3 INN Inverting analog input 4 VTN Termination resistor return pin for INN input 5, 16 Vcci Positive supply voltage input stage. 6 CLK Clock input pin, inverting side. 7 CLK Clock input pin, non-inverting side. 8 CLKRTN Clock RTN pin, connect to GND. 9, 12 Vcco Positive supply voltage for the output stage. 10 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, after a positive transition on CLK and negative transition on CLK. 11 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, after a positive transition on CLK and negative transition on CLK. 14 HYS Hysteresis Control pin. This pin should be left disconnected to minimize hysteresis. Connect to Vee with a resistor to add the desired amount of hysteresis. 13 Vee Negative power supply, -3V. 15 RTN Return for ESD protection, connect to GND. Package Base Do not DC GND. Thermal dissipation path only. 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] COMPARATORS - SMT 1 Pin Descriptions 1-6 HMC875LC3C v04.0810 COMPARATORS - SMT 1 20 Gbps Clocked COMPARATOR with RSCML OUTPUT STAGE Evaluation PCB Front Side Back Side 1-7 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] HMC875LC3C 20 Gbps Clocked COMPARATOR with RSCML 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 uF Tantalum TP1 - TP4 DC Pin, Swage Mount U1 HMC875LC3C 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. The exposed paddle should not be electronically connected to DC GND, thermal dissipation path only. 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 1 COMPARATORS - SMT v04.0810 Application Circuit 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