HMC744LC3 v02.0312 High Speed Digtial Logic - SMT 14 Gbps, FAST RISE TIME 1:2 FANOUT BUFFER w/ PROGRAMMABLE OUTPUT VOLTAGE & POSITIVE SUPPLY Typical Applications Features The HMC744LC3 is ideal for: Inputs Terminated Internally to 50 Ohms • RF ATE Applications Differential & Single-Ended Operation • Broadband Test & Measurement Propagation Delay: 120 ps • Serial Data Transmission up to 14 Gbps Fast Rise and Fall Times: 22 / 20 ps • Clock Buffering up to 14 GHz Programmable Differential Output Voltage Swing: 600 - 1100 mV Low Power Consumption: 287 mW typ. Single Supply: +3.3 V 16 Lead Ceramic 3x3 mm SMT Package: 9 mm 2 General Description Functional Diagram The HMC744LC3 is a 1:2 Fanout Buffer designed to support data transmission rates up to 14 Gbps, and clock frequencies as high as 14 GHz. All differential inputs to the HMC744LC3 are CML and terminated on-chip with 50 Ohms to the positive supply, Vcc, and may be AC or DC coupled. The differential CML outputs are source terminated to 50 Ohms and may also be AC or DC coupled. Outputs can be connected directly to a 50 Ohm Vcc-terminated system, while DC blocking capacitors may be used if the terminating system is 50 Ohms to ground. The HMC744LC3 also features an output level control pin, VR, which allows for loss compensation or signal-level optimization. the HMC744LC3 operates from a single 3.3 V supply and is available in ROHS-compliant 3x3 mm SMT package. Electrical Specifications, TA = +25 ºC, Vcc = 3.3 V, VR = 3.3 V Parameter Conditions Power Supply Voltage Typ. Max 3.0 3.3 3.6 Units V Power Supply Current 87 mA Maximum Data Rate 14 Gbps Maximum Clock Rate 14 Input Voltage Range Input Differential Range Input Return Loss Vcc + 0.5 V 0.1 2 Vp-p dB Single-Ended, peak-to-peak 550 mVp-p Differential, peak-to-peak 1100 mVp-p Output High Voltage 3.29 V Output Low Voltage 2.74 V 22 / 20 ps Output Rise / Fall Time Frequency <14 GHz GHz Vcc - 1.5 10 Output Amplitude 1 Min. Single-Ended, 20% - 80% 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 [email protected] HMC744LC3 v02.0312 14 Gbps, FAST RISE TIME 1:2 FANOUT BUFFER w/ PROGRAMMABLE OUTPUT VOLTAGE & POSITIVE SUPPLY Electrical Specifications (continued) Conditions Min. Typ. Frequency <13 GHz Max Units 10 Small Signal Gain dB 27 dB rms Random Jitter JR 0.2 δ - δ, 215 -1 PRBS input [1] Deterministic Jitter, JD 2 ps rms 6 ps Propagation Delay, td 120 ps D1 to D2 Data Skew, tSKEW <2 ps VR Pin Current VR = 3.3 V VR Pin Current VR = 3.7 V 2 mA 3.5 mA [1] Deterministic jitter measured at 13 GHz with a 300 mVp-p, 215 -1 PRBS input sequence. DC Current vs. Supply Voltage Output Differential Voltage vs. Supply Voltage [1][2] [1][2] 1200 110 105 VOUT DIFFERENTIAL (mVp-p) DC CURRENT (mA) 1175 +25C +85C -40C 100 95 90 85 80 75 70 2.9 3 3.1 3.2 3.3 3.4 3.5 3.6 1125 1100 1075 1050 1025 1000 2.9 3.7 +25C +85C -40C 1150 3 3.1 SUPPLY VOLTAGE (V) 3.3 3.4 3.5 3.6 3.7 14 16 18 SUPPLY VOLTAGE (V) Rise / Fall Time vs. Supply Voltage [1][2] Output Differential Voltage vs. Frequency [1][3] 1400 VOUT DIFFERENTIAL (mVp-p) 25 23 RISE/FALL TIME (ps) 3.2 High Speed Digtial Logic - SMT Parameter Output Return Loss 21 19 tr tf 17 15 2.9 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 SUPPLY VOLTAGE (V) [1] VR = 3.3 V [2] Frequency = 13 GHz 1200 1000 800 600 400 2 4 6 8 10 12 FREQUENCY (GHz) [3] Vcc = 3.3 V 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 [email protected] 2 HMC744LC3 v02.0312 14 Gbps, FAST RISE TIME 1:2 FANOUT BUFFER w/ PROGRAMMABLE OUTPUT VOLTAGE & POSITIVE SUPPLY Rise / Fall Time vs. VR [1][2] 25 1200 23 1000 800 +25C +85C -40C 600 tr tf 21 19 17 15 2.1 2.3 2.5 2.7 2.9 3.1 3.3 3.5 3.7 2.1 2.3 2.5 2.7 2.9 3.1 3.3 3.5 3.7 VR (V) VR (V) Input Return Loss vs. Frequency Output Return Loss vs. Frequency 0 0 -5 -5 RETURN LOSS (dB) -10 -15 -20 -25 -30 -10 -15 -20 -25 -30 0 2 4 6 8 10 FREQUENCY (GHz) [1] Vcc = 3.3 V 3 RISE/FALL TIME (ps) VOUT DIFFERENTIAL (mVp-p) 1400 400 RETURN LOSS (dB) High Speed Digtial Logic - SMT Output Differential Voltage vs. VR [1][2] 12 14 -35 0 2 4 6 8 10 12 14 FREQUENCY (GHz) [2] Frequency = 13 GHz 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 [email protected] HMC744LC3 v02.0312 14 Gbps, FAST RISE TIME 1:2 FANOUT BUFFER w/ PROGRAMMABLE OUTPUT VOLTAGE & POSITIVE SUPPLY [1] Test Conditions: Pattern generated with an Agilent N4903A Serial BERT. Eye Diagram presented on a Tektronix CSA 8000. Device input = 13 Gbps PN code. Both output channels shown. Device is AC coupled to scope Timing Diagram High Speed Digtial Logic - SMT Eye Diagram Truth Table Input Outputs DIN D1 L L L H H H Notes: DIN = DINP - DINN D1 = D1P - D1N D2 = D2P - D2N D2 H - Positive differential voltage L - Negative differential voltage 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 [email protected] 4 HMC744LC3 v02.0312 14 Gbps, FAST RISE TIME 1:2 FANOUT BUFFER w/ PROGRAMMABLE OUTPUT VOLTAGE & POSITIVE SUPPLY High Speed Digtial Logic - SMT Absolute Maximum Ratings Power Supply Voltage (Vcc) Vcc -0.5 V to +3.75 V Input Signals Vcc -2.0 V to Vcc +0.5 V Output Signals Vcc -1.5 V to Vcc +0.5 V Continuous Pdiss (T = 85 °C) (derate 17 mW/°C above 85 °C) 0.68 W Thermal Resistance (Rth j-p) Worst case junction to package paddle 59 °C/W Maximum Junction Temperature 125 °C Storage Temperature -65 °C to +150 °C Operating Temperature -40 °C to +85 °C ESD Sensitivity (HBM) Class 1C 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 0.05 mm DATUM -C6. ALL GROUND LEADS MUST BE SOLDERED TO PCB RF GROUND. 7. PADDLE MUST BE SOLDERED TO GND. 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 [email protected] HMC744LC3 v02.0312 14 Gbps, FAST RISE TIME 1:2 FANOUT BUFFER w/ PROGRAMMABLE OUTPUT VOLTAGE & POSITIVE SUPPLY Pin Descriptions Function Description 1, 4, 5, 8, 9, 12 GND Signal Grounds 2, 3 10, 11 D1P, D1N D2N, D2P Differential Data Outputs: Current Mode Logic (CML) referenced to positive supply. 6, 7 DINP, DINN Differential Data Inputs: Current Mode Logic (CML) referenced to positive supply. 13, 16 Vcc Positive Supply 14, Package Base GND Supply Ground 15 VR Output level control. Output level may be adjusted by applying a voltage to VR per “Output Differential vs. VR” plot. 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 [email protected] High Speed Digtial Logic - SMT Pin Number 6 HMC744LC3 v02.0312 14 Gbps, FAST RISE TIME 1:2 FANOUT BUFFER w/ PROGRAMMABLE OUTPUT VOLTAGE & POSITIVE SUPPLY High Speed Digtial Logic - SMT Evaluation PCB List of Materials for Evaluation PCB 122517 [1] Item Description J1 - J6 PCB Mount SMA RF Connectors J7 - J9 DC Pin JP1 Shorting Jumper C1, C2 4.7 µF Capacitor, Tantalum C3 - C5 100 pF Capacitor, 0402 Pkg. R2 10 Ohm Resistor, 0603 Pkg. U1 HMC744LC3 High Speed Logic, Fanout Buffer PCB [2] 122515 Evaluation Board [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Arlon 25FR or rogers 4350 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 packaged base should be connected to GND. 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. Install jumper on JP1 to short VR to Vcc for normal operation. 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 [email protected] HMC744LC3 v02.0312 14 Gbps, FAST RISE TIME 1:2 FANOUT BUFFER w/ PROGRAMMABLE OUTPUT VOLTAGE & POSITIVE SUPPLY High Speed Digtial Logic - SMT Application Circuit 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 [email protected] 8