HMC842LC4B v01.0710 HIGH SPEED LOGIC - SMT 7 45 Gbps, FANOUT BUFFER w/ PROGRAMMABLE OUTPUT VOLTAGE Typical Applications Features The HMC842LC4B is ideal for: Supports Clock Frequencies up to 28 GHz • OC-768 and SDH STM-256 Equipment Independent Programmable Output Swing for Each Channel: 400 - 1200 mVp-p Diff. • RF ATE Applications • Short, intermediate, & Long Haul Fiber Optic Applications Supports Single-Ended or Differential Operation • Broadband Test & Measurement Less than 500 fs Additive RMS Jitter • Serial Data Transmission up to 45 Gbps Fast Rise and Fall Times: <12ps • Clock Buffering up to 28 GHz 24 Lead 4x4mm SMT Package: 16mm2 Functional Diagram General Description Power Consumption: 465 mW The HMC842LC4B is a 1:2 Fanout Buffer designed to support data transmission rates up to 45 Gbps. The device can also operate with clock signals up to 28 GHz. During normal operation, input data (or clock) is transferred to both output channels. Differential input and output signals of the HMC842LC4B are terminated with 50 Ohms to ground on-chip, and may be either AC or DC coupled. The Outputs can be connected directly to a 50 Ohms-to-ground terminated system, while DC blocking capacitors should be used if the terminating system is 50 Ohms to a non-ground DC voltage. The HMC842LC4B also features two separate output level control pins, VAC1 and VAC2 which provide loss compensation and signal level optimization for each output channel independently. The HMC842LC4B operates from a single -3.3V DC supply and is available in a ceramic RoHS compliant 4x4 mm SMT package. Electrical Specifications, TA = +25°C, Vee = -3.3V Conditions Min. Typ. Max Units Power Supply Voltage Parameter ±5 % Tolerance -3.47 -3.3 -3.13 V Power Supply Current VAC1 = VAC2 = -0.3V (Vout = 930 mVp-p diff @ 40 Gbps) 120 140 160 mA Output Amplitude Control Voltage (VAC1, VAC2) -1.4 -0.3 0 V Maximum Data Rate 45 Maximum Clock Rate 28 GHz Single-ended, peak-to-peak 50 1000 Differential, peak-to-peak 100 2000 Input High Voltage -0.5 0.5 V Input Low Voltage -1 0 V Input Amplitude 7-1 Gbps 32 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 mVp-p HMC842LC4B v01.0710 45 Gbps, FANOUT BUFFER w/ PROGRAMMABLE OUTPUT VOLTAGE Electrical Specifications, (continued) Conditions Min. Differential, peak-to-peak @ 40 Gbps 400 Typ. Max Units 1200 mVp-p Output High Voltage VAC = -0.3 -10 mV Output Low Voltage VAC = -0.3 -550 mV 10 dB Input Return Loss frequency < 32 GHz Output Return Loss frequency < 32 GHz Deterministic Jitter, Jd [1] 7 dB 3 ps, pp @ 28 GHz Clock Input Additive Random Jitter Jr @ 32 GHz Clock Input 0.3 ps rms 0.6 ps rms Rise Time, tr [1] 11 ps Fall Time, tf [1] 11 ps Propagation Delay, td 10 ps OUT1 to OUT2 Data Skew, tskew [1] 2 ps [1] Data Input: 40 Gbps PRBS 223 -1 pattern, 150 mVp-p single-ended Differential Output Swing vs. Supply Voltage [1] [2] DC Current vs. Supply Voltage [1] [2] 1200 DIFFERENTIAL VOLTAGE (mVp-p) 200 DC CURRENT (mA) 175 150 125 100 +25C +70C -40C 75 50 -3.47 -3.41 -3.36 -3.3 -3.24 SUPPLY VOLTAGE Vee (V) -3.19 800 +25C +70C -40C 700 -3.41 -3.36 -3.3 -3.24 SUPPLY VOLTAGE Vee (V) -3.19 -3.13 1400 DIFFERENTIAL VOLTAGE (mVp-p) DIFFERENTIAL VOLTAGE (mVp-p) 900 Differential Output Swing vs. Frequency [1] 1400 1200 1000 800 600 +25C +70C -40C 400 200 0 -1.4 1000 600 -3.47 -3.13 Differential Output Swing vs. VAC [3] 1100 7 HIGH SPEED LOGIC - SMT Parameter Output Amplitude -1.2 [1] VAC = -0.3V -1 -0.8 -0.6 -0.4 CONTROL VOLTAGE VAC (V) -0.2 0 [2] Input data rate: 40 Gbps PRBS 223 -1 1200 1000 800 600 +25C +70C -40C 400 200 0 0 4 8 12 16 20 FREQUENCY (GHz) 24 28 32 [3] Frequency = 20 GHz 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 7-2 HMC842LC4B v01.0710 45 Gbps, FANOUT BUFFER w/ PROGRAMMABLE OUTPUT VOLTAGE Fall Time vs. Supply Voltage [1][2][3] 14 12 12 FALL TIME (ps) 14 10 +25C +70C -40C 8 6 -3.47 -3.41 -3.36 -3.3 10 +25C +70C -40C 8 -3.24 -3.19 6 -3.47 -3.13 -3.41 -3.36 Rise / Fall Time vs. VAC [1][2][3] 12 6 P-P JITTER (ps) 8 10 Rise Time Fall Time 6 -1.4 -1.2 -1 -0.8 -0.6 -3.19 -3.13 -0.4 4 +25C +70C -40C 2 -0.2 0 -3.47 0 -3.41 -3.36 -3.3 -3.24 SUPPLY VOLTAGE Vee (V) CONTROL VOLTAGE VAC (V) Input Return Loss vs. Frequency [1][5] -3.19 -3.13 Output Return Loss vs. Frequency [1][5] 0 0 -5 -5 OUT1 OUT2 Data RESPONSE (dB) -10 RESPONSE (dB) -3.24 Peak-to-Peak Jitter vs. Supply Voltage [1][2][3][4] 14 8 -3.3 SUPPLY VOLTAGE Vee (V) SUPPLY VOLTAGE Vee (V) RISE/FALL TIME (ps) HIGH SPEED LOGIC - SMT 7 RISE TIME (ps) Rise Time vs. Supply Voltage [1][2][3] -10 -15 -20 -15 -20 -25 -30 -25 -30 -35 0 4 8 12 16 20 FREQUENCY (GHz) 24 28 32 -40 0 4 8 12 16 20 24 FREQUENCY (GHz) [1] VAC = -0.3V [2] Input data rate: 40 Gbps PRBS 223 -1 [3] Data was taken at single ended output [4] Source jitter was not deembeded [5] Device measured on evaluation board with single-ended time domain gating. 7-3 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 28 32 HMC842LC4B v01.0710 45 Gbps, FANOUT BUFFER w/ PROGRAMMABLE OUTPUT VOLTAGE 40 Gbps Differential Output Eye Diagram 28 GHz Differential Output Eye Diagram Measurements Current Min Measurements Max Total Meas. Current Mean Min Max V Amp 558.99 mV 556.8 mV 543.46 mV 577.62 mV Eye Amp 921 mV 920 mV 922 mV 75 Rise Time 6.86 ps 6.816 ps 6.28 ps 7.43 ps Rise Time 11.11 ps 10.89 ps 11.11 ps 75 Fall Time 6.91 ps 6.473 ps 5.84 ps 7.01 ps Fall Time 11.11 ps 10.44 ps 11.11 ps 75 p-p Jitter 5.778 ps 5.333 ps 5.778 ps 75 Time Scale: 10 ps/div Amplitude Scale: 210 mV/div Test Conditions: Vee = -3.3V, VAC = -0.3V Input Data: Single ended 150 mVp-p 40 Gbps NRZ PRBS 223 -1 pattern Time Scale: 12 ps/div Amplitude Scale: 120 mV/div Test Conditions: Vee = -3.3V, VAC = -0.3V Input Data: Single ended 300 mVp-p 28 GHz clock signal HIGH SPEED LOGIC - SMT 7 Timing Diagram Input Outputs D OUT1 L L L H H H Notes: D = DP - DN OUT1 = OUTP1 - OUTN1 OUT2 = OUTP2 - OUTN2 OUT2 H - Logic High L - Logic Low 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 7-4 HMC842LC4B v01.0710 45 Gbps, FANOUT BUFFER w/ PROGRAMMABLE OUTPUT VOLTAGE Absolute Maximum Ratings HIGH SPEED LOGIC - SMT 7 Power Supply Voltage (Vee) -3.7V to +0.5V Input Voltage -1.3V to +0.5V Channel Temperature 125°C Continuous Pdiss (T = 85°C) (derate 18.48 mW/°C above 85°C) 0.74 W Thermal Resistance (channel to ground paddle) 54.11 °C/W Storage Temperature -65°C to +125°C Operating Temperature -40°C to +70°C Output Amplitude Control Voltage (VAC) -2.3V to +0.5V ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS 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 AND GROUND PADDLE MUST BE SOLDERED TO PCB RF GROUND. 7-5 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 HMC842LC4B v01.0710 45 Gbps, FANOUT BUFFER w/ PROGRAMMABLE OUTPUT VOLTAGE Pin Descriptions Function Description 1 VAC1 Output Amplitude Control Voltage for OUT1 2, 5, 8, 11, 14, 17, 21 Package Bottom GND Signal and supply grounds 3, 4 OUTP1, OUTN1 Differential (OUTP1-OUTN1) or single ended (OUTP1) outputs 6, 7, 12, 13, 19, 24 N/C The pins are not connected internally; however, all data shown herein was measured with these pins connected to RF/DC ground externally. 9, 10 DN, DP Differential (DP-DN) or single ended (DP) inputs 15, 16 OUTN2, OUTP2 Differential (OUTP2-OUTN2) or single ended (OUTP2) outputs 18 VAC2 Output Amplitude Control Voltage for OUT2 20, 22, 23 Vee Power Supply (-3.3V) Interface Schematic 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 7 HIGH SPEED LOGIC - SMT Pin Number 7-6 HMC842LC4B v01.0710 45 Gbps, FANOUT BUFFER w/ PROGRAMMABLE OUTPUT VOLTAGE Evaluation PCB HIGH SPEED LOGIC - SMT 7 Item Description J1 OUTP1 J2 OUTN1 J3 OUTP2 J4 OUTN2 J5 DN J6 DP J9 VAC1 J10 VAC2 J11 GND J12 Vee List of Materials for Evaluation PCB 129151 [1] Item Description J1 - J6 K Connector J9 - J12 DC Pin C1, C3 - C6 1000 pF Capacitor, 0402 Pkg. C2 0.1 µF Capacitor, 0402 Pkg. C7 - C9 4.7 µF Capacitor, Tantalum U1 HMC842LC4B 1:2 Fanout Buffer PCB [2] 129821 Evaluation Board [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Arlon 25FR or Rogers 4350 7-7 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 metal package base must be connected to Vee. A sufficient number of via holes should be used to connect the top and bottom ground planes. The evaluation circuit board shown is available from Hittite upon request. 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 HMC842LC4B v01.0710 45 Gbps, FANOUT BUFFER w/ PROGRAMMABLE OUTPUT VOLTAGE Application Circuit HIGH SPEED LOGIC - SMT 7 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 7-8