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| HMC874LC3C v01.1009 20 Gbps CLOCKED COMPARATOR with RSPECL OUTPUT STAGE Typical Applications Features Propagation Delay Clock to Output: 120 ps Overdrive & Slew Rate Dispersion: 10 ps Minimum Pulse Width: 60 ps Resistor Programmable Hysteresis Differential Clock Control Input Bandwidth: 10 GHz Power Dissipation: 150 mW RSCML and RSECL Versions Available 16 Lead 3x3mm SMT Package: 9mm 2 6 COMPARATORS - SMT The HMC874LC3C is ideal for: * ATE Applications * High Speed Instrumentation * Digital Receiver Systems * Pulse Spectroscopy * High Speed Trigger Circuits * Clock & Data Restoration Functional Diagram General Description The HMC874LC3C is a SiGe monolithic, ultra fast comparator which features reduced swing PECL 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 PECL output stages are designed to directly drive 400 mV into 50 Ohms terminated to +1.3V while maintaining compatibility with other PECL logic families. The HMC874LC3C features high speed latches with programmable hysteresis, and is configured to operate as a clocked comparator. Electrical Specifi cations TA = +25C, Vcci= +3.3V, Vcco = +3.3V, CLK / CLK = 1.6 to 2.4V, Vee = -3V, VTERM = +1.3V Parameter Input Voltage Range Input Differential Voltage Input Offset Voltage Input Offset Voltage, Temperature Coefficient Input Bias Current Input Bias Current Temperature Coefficient Input Offset Current Input Impedance Common Mode Input Impedance Differential Input Impedance Hysteresis Rhys = Conditions Min. -2 -1.75 5 15 15 50 4 50 350 15 1 Typ. Max 2 1.75 Units V V mV V / C uA nA / C A K K mV 6 - 50 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com HMC874LC3C v01.1009 20 Gbps CLOCKED COMPARATOR with RSPECL OUTPUT STAGE Latch Enable Characteristics Parameter Clock Enable Input Impedance Clock to Data Output Delay, tdp Clock Enable Input Range Clock Max Frequency, fmax 1.6 25 Conditions Each Pin Min. Typ. 50 120 2.4 Max Units ps 6 COMPARATORS - SMT 6 - 51 V GHz DC Output Characteristics, Vcco = +3.3V, VTERM = +1.3V Parameter Output Voltage High Level, Voh Output Voltage Low Level, Vol Output Voltage Differential Swing Conditions Min. 2.30 1.94 320 Typ. Max 2.42 2.10 420 Units V V mV AC Performance Parameter VOD Dispersion Tpd vs. Common Mode Dispersion, -1.75V Parameter Input Supply Current, Icci Output Supply Current, Icco Vee Current, lee Power Dissipation, Pd PSRR, Vcci PSRR, Vee Conditions Min. Typ. 11 40 21 150 38 38 Max Units mA mA mA mW dB dB Note 1: 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, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com HMC874LC3C v01.1009 20 Gbps CLOCKED COMPARATOR with RSPECL OUTPUT STAGE Propagation Delay vs. Input Common Mode Voltage[1] 15 12.5 10 Dispersion vs. Overdrive Voltage 6 DISPERSION (ps) 11 9 7 5 3 1 -1 0 10 20 30 40 50 60 70 80 90 100 OVERDRIVE VOLTAGE (mV) Rising Edge Falling Edge COMPARATORS - SMT tPD (ps) 7.5 5 2.5 0 Rising Edge Falling Edge -2.5 -5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 COMMON MODE VOLTAGE (mV) Output Voltage vs. Temperature 2.5 2.4 VOLTAGE (V) Voltage Swing vs. Temperature 0.5 0.45 VOLTAGE (V) 2.3 2.2 2.1 2 1.9 -45 VOH VOL 0.4 0.35 0.3 -32 -19 -6 7 20 33 46 59 72 85 0.25 -50 -35 -20 -5 10 25 40 55 70 85 100 TEMPERATURE (C) TEMPERATURE (C) Delay vs. Temperature 40 35 30 25 20 15 10 -50 tr tf Power Dissipation vs. Temperature 200 180 POWER (mW) DELAY (ps) 160 140 120 -35 -20 -5 10 25 40 55 70 85 100 100 -50 -35 -20 -5 10 25 40 55 70 85 100 TEMPERATURE (C) TEMPERATURE (C) [1] Vcci= +3.3V, Vcco = +3.3V, Vee = -3V, V TERM = +1.3V 6 - 52 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com HMC874LC3C v01.1009 20 Gbps CLOCKED COMPARATOR with RSPECL OUTPUT STAGE Comparator Hysteresis vs. Rhys Control Resistor 25 Currents vs. Temperature 50 45 I_Vcco I_Vee I_Vcci I_Vterm 6 COMPARATORS - SMT 6 - 53 20 HYSTERESIS (mV) 40 CURRENT (mA) 1 10 100 1000 15 35 30 25 20 5 15 0 RESISTANCE (Ohm) 10 -50 10 -35 -20 -5 10 25 40 55 70 85 100 TEMPERATURE (C) Comparator Hysteresis vs. Clock Frequency (Rhys = ) 10 Eye Diagram 8 HYSTERESIS (mV) 6 4 2 0 1 10 FREQUENCY (MHz) 100 TJ(1E-12): 6.71 ps RJ(-): PJ(rms) 310 fs 0.0 s DJ(-): DDJ(p-p): 3.08 ps 3.24 ps RJ(rms): DCD: ISI J(p-p) 265 fs -----3.24 ps Absolute Maximum Ratings Input Supply Voltage (Vcci to GND) Output Supply Voltage (Vcco to GND) Positive Supply Differential (Vcci - Vcco) Input Voltage Differential Input Voltage Input Voltage, Latch Enable Applied Voltage (HYS) Maximum Input Current Output Current Junction Temperature Continuous Pdiss (T = 85C) (Derate 20.4 mW/C above 85C) Thermal Resistance (Rth) (Junction to Lead) Storage Temperature Operating Temperature -0.5V to +4V -0.5V to +4V -0.5V to +3.5V -2V to +2V -2V to +2V -0.5V to Vcci +0.5V Vee to GND 1 mA 40 mA 125C 0.816 W 49 C/W -65C to +150C -40C to +85C Bit Rate Pat Length Div. Ratio 5.00000 Gb/s 127 Bits 1:8 ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com HMC874LC3C v01.1009 20 Gbps CLOCKED COMPARATOR with RSPECL OUTPUT STAGE Timing Diagram 6 COMPARATORS - SMT 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. 6 - 54 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com HMC874LC3C v01.1009 20 Gbps CLOCKED COMPARATOR with RSPECL OUTPUT STAGE Pin Descriptions Pin Number 1 2 3 4 Function VTP INP INN VTN Description Termination resistor return pin for INP Input. Non-Inverting analog input Inverting analog input Termination resistor return pin for INN input Interface Schematic 6 COMPARATORS - SMT 6 - 55 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. 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. 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. 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. 10 Q 11 Q 14 HYS 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. For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com HMC874LC3C v01.1009 20 Gbps CLOCKED COMPARATOR with RSPECL OUTPUT STAGE Evaluation PCB 6 COMPARATORS - SMT List of Materials for Evaluation PCB 125932 [1] Item J1 J2 - J7 J8 JP1, JP2 C1 - C3, C5, C6, C8 - C10 C4, C7, C11 C11 - C13 TP1 - TP4 U1 PCB Description 8 Pos. Vertical TIN 2.92 mm 40 GHz Jack Terminal Strip, Single Row 3 Pin SMT 2 Pos. Vertical TIN 100 pF Capacitor, 0402 Pkg. 330 pF Capacitor, 0402 Pkg. 4.7 uF Tantalum DC Pin, Swage Mount HMC874LC3C Comparator 125929 Evaluation PCB The circuit board used in the final 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 6 - 56 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com HMC874LC3C v01.1009 20 Gbps CLOCKED COMPARATOR with RSPECL OUTPUT STAGE Application Circuit 6 COMPARATORS - SMT For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com 6 - 57 |
Price & Availability of HMC874LC3C1
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