HMC750LP4 / 750LP4E v03.0111 12.5 Gbps LIMITING AMPLIFIER Typical Applications Features The HMC750LP4(E) is ideal for: Supports Data Rates up to 12.5 Gbps •• OC-192 Receivers Differential Gain: 44 dB •• 10 Gbps Ethernet Receivers 2mV p-p input Sensitivity •• 10 Gbps Fiber Channel Receivers 3 dB Bandwidth: 11 GHz Integrated DC Offset Correction •• Broadband Test & Measurement Adjustable Differential Saturated O/P Voltage Swing up to 880 mVp-p Single +5V Power Supply Very Low RMS Jitter Degradation General Description Functional Diagram HMC750LP4E is a limiting amplifier designed to support data transmission rates up to 12.5 Gbps. The amplifier can operate over a wide range of input voltage levels and provides constant-level differential output swing. HMC750LP4E also features an output level control pin, VC1, which allows for loss compensation or for signal level optimization. Differential output signal swing can be adjustable up to 880 mVp-p. Input signals higher than 3mV p-p can be amplified to saturated 880mV p-p differential signal. limiting amplifiers - smt 6 24 Lead Plastic 4x4mm SMT Package: 16mm² All single-ended input signals to the HMC750LP4E are terminated with 50 ohms to +5V on-chip, and may be either AC or DC coupled. The outputs of the HMC750LP4E may be operated either differentially or single-ended. Outputs can be connected directly to a 50 ohm terminated system referenced to +5V, while DC blocking capacitors may be used if the terminating system is 50 ohms to a non +5V voltage. The HMC750LP4E operates from a single + 5V DC supply and is available in a plastic RoHS compliant 4x4 mm SMT package. Electrical Specifications, TA = +25° C, Vcc = +5V, VC1 = +2.5V Parameter Conditions Power Supply Voltage Power Supply Current VC1 = 2.5V Maximum Data Rate 6-1 Min. Typ. Max. Units 4.6 5 5.4 V 106 122 12.5 mA Gbps Differential Small Signal Gain VC1 = 2.5V 44 dB Small Signal Bandwidth 3-dB Cutoff 11 GHz Deterministic Jitter [1] Vin = 20 mV peak to peak 5 Additive Random Jitter [2] Vin = 200 mV peak to peak ps p-p 0.2 ps rms 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] HMC750LP4 / 750LP4E v03.0111 12.5 Gbps LIMITING AMPLIFIER Electrical Specifications (Conditions) Conditions Fall Time Typ. Max. Units 20% - 80% Min. 23 27 ps 20% - 80% 21 23 ps Differential Output Swing. VC1 = 3V for maximum output swing. 850 Input Return Loss up to 10 GHz 15 dB Output Return Loss up to 10 GHz 8 dB Data Output Swing Input Sensitivity 880 mVp-p 2 mVp-p Maximum Input Swing 1200 Output Offset Voltage VC1 = 3V for maximum output swing mVp-p 3 VC1 Vout DC mV 2 3 V 4.5 4.8 V [1] Deterministic jitter measured at 10 Gbps with PRBS 2 -1 pattern. It is the peak to peak deviation from the ideal time crossing [2] Random jitter is measured with 10 Gbps 10101… pattern 23 Differential Output vs. Supply Voltage [1] 1200 DIFFERENTIAL VOLTAGE (mV) DIFFERENTIAL VOLTAGE (mV) 1000 1000 +25C +85C -40C 800 600 400 200 0 4.6 4.7 4.8 4.9 5 5.1 5.2 SUPPLY VOLTAGE Vcc (V) 5.3 600 400 200 500 5 RMS JITTER (ps) 6 400 300 200 100 2.5 2.7 2.9 CONTROL VOLTAGE VC1 (V) 3.1 4 3 2 1 1 10 100 1000 Vin (mV) [1] VC1 = 2.5V 2.3 RMS Jitter vs. Vinput [1][2][3] 600 0 0.1 +25C +85C -40C 800 0 2.1 5.4 Differential Output vs. Vinput [1][2] DIFFERENTIAL VOLTAGE (mV) Differential Output vs. Control Voltage [2] 6 limiting amplifiers - smt Parameter Rise Time [2] Vcc = 5V 0 0 100 200 300 Vin (mV) 400 500 600 [3] Input Data Rate = 10 Gbps 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] 6-2 HMC750LP4 / 750LP4E v03.0111 12.5 Gbps LIMITING AMPLIFIER DC Current vs. Supply Voltage [1] [3] 40 200 36 160 DC CURRENT (mA) RISE TIME, FALL TIME 20%-80% (ps) Rise & Fall Time vs. Vinput [1] [2] [3] Rise Time Fall Time 32 28 120 24 80 40 20 0 100 200 300 Vin (mV) 6 400 500 0 4.6 600 DC Current vs. Control Voltage [2] [3] 4.7 4.8 4.9 5 5.1 5.2 SUPPLY VOLTAGE Vcc (V) 5.3 5.4 Differential Gain vs. Frequency [1] [2] 50 200 +25C +85C -40C 170 40 140 GAIN (dB) DC CURRENT (mA) 110 30 20 80 10 50 20 2.1 0 2.3 2.5 2.7 2.9 CONTROL VOLTAGE Vc1 (V) 0 3.1 2 4 6 8 10 FREQUENCY (GHz) 12 14 16 Return Loss [1] [2] 0 -10 RETURN LOSS (dB) limiting amplifiers - smt +25C +85C -40C -20 -30 -40 -50 s11 s22 0 2 4 6 8 10 12 14 16 FREQUENCY (GHz) [1] VC1 = 2.5V 6-3 [2] Vcc = 5V [3] Input Data Rate = 10 Gbps 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] HMC750LP4 / 750LP4E v03.0111 12.5 Gbps LIMITING AMPLIFIER Output Eye Diagram Test Conditions Eye diagram data presented on an Infinium DCA 86100A Rate = 10 Gb/s Pseudo Random Code = 223 -1 Vin = 100 mVpp differential, VC1 = 3V Minimum Maximum Rise Time (f1) 23.33 ps 23.33 ps 23.33 ps 32 Fall Time (f1) 24.67 ps 24.00 ps 25.33 ps 32 Differential Eye Amplitude (f1) 860 mV 858 mV 860 mV 32 Eye S/N (f1) 15.35 15.28 15.50 32 Vertical Scale 100 mV / div Horizontal Scale 30.0 ps / div 6 Total Meas Output Eye Diagram Test Conditions Eye diagram data presented on an Infinium DCA 86100A Rate = 10 Gb/s Pseudo Random Code = 223 -1 Vin = 500 mVpp differential, VC1 = 3V Current Minimum Maximum Total Meas Rise Time (f1) 23.33 ps 22.67 ps 23.33 ps 30 Fall Time (f1) 24.67 ps 24.67 ps 26.00 ps 30 Differential Eye Amplitude (f1) 862 mV 861 mV 862 mV 30 Eye S/N (f1) 15.27 15.19 15.35 30 Vertical Scale 100 mV / div Horizontal Scale 30.0 ps / div limiting amplifiers - smt Current 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] 6-4 HMC750LP4 / 750LP4E v03.0111 12.5 Gbps LIMITING AMPLIFIER Input Signal limiting amplifiers - smt 6 6-5 Output Signal Input and output signal for 10 Gbps, PRBS 223 -1, 3.5mV p-p differential, VC1 = 3V. Absolute Maximum Ratings Supply Voltage 5.6V Input Signals 4V to 5.5V RF Input Power 10 dBm Junction Temperature 125 °C Continuous Pdiss (T = 85°C) (Derate 24 mW/°C above 85°C) 0.95 Watts Thermal Resistance (Rth) (junction to ground paddle) 42 °C/W Storage Temperature -65 to 150 °C Operating Temperature -40 to +85 °C 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] HMC750LP4 / 750LP4E v03.0111 12.5 Gbps LIMITING AMPLIFIER 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 AND GROUND PADDLE MUST BE SOLDERED TO PCB RF GROUND. 7. REFER TO HMC APPLICATION NOTE FOR SUGGESTED PCB LAND PATTERN. Package Information Part Number Package Body Material Lead Finish MSL Rating HMC750LP4 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] HMC750LP4E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] Package Marking [3] H750 XXXX limiting amplifiers - smt 6 H750 XXXX [1] Max peak reflow temperature of 235 °C [2] Max peak reflow temperature of 260 °C [3] 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] 6-6 HMC750LP4 / 750LP4E v03.0111 12.5 Gbps LIMITING AMPLIFIER Pin Descriptions limiting amplifiers - smt 6 6-7 Pin Number Function Description 1, 18, 19, 22 - 24 Vcc Positive supply. 2, 5, 14, 17, Ground Paddle GND Signal and supply ground. Package base must be connected to DC ground. 3, 4 INP, INN Data inputs 6, 7, 9 - 13 N/C No connection. These pins are not connected internally, but should be connected to ground externally. 8 VC1 Gain, output level control. 15, 16 OUTN, OUTP Data outputs 20, 21 CN, CP Filter capacitor for offset correction. Connect 100nF capacitor between CP and CN. 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] HMC750LP4 / 750LP4E v03.0111 12.5 Gbps LIMITING AMPLIFIER Evaluation PCB List of Materials for Evaluation PCB 121600 [1] Item Description J1 - J4 PCB Mount SMA Connector J6, J8, J9 DC Pin C1, C2, C13 0.1 µF Capacitor, 0402 Pkg. C5 - C7 1 nF Capacitor, 0402 Pkg. C14 4.7 µF Capacitor, 0402 Pkg. C16 100 pF Capacitor, 0402 Pkg. C17 10 nF Capacitor, 0402 Pkg. R1 -R4 0 Ohm Resistor, 0402 Pkg. R7 620 Ohm Resistor, 0402 Pkg. U1 HMC750LP4(E) Limiting Amplifier PCB [2] 121598 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 and exposed paddle 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. The evaluation circuit board shown is available from Hittite upon request. limiting amplifiers - smt 6 [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Arlon 25FR 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] 6-8 HMC750LP4 / 750LP4E v03.0111 12.5 Gbps LIMITING AMPLIFIER Application Circuit limiting amplifiers - smt 6 6-9 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] HMC750LP4 / 750LP4E v03.0111 12.5 Gbps LIMITING AMPLIFIER Application Information Setting the output swing using external resistor Rc The HMC750LP4E features output swing level adjustment by using VC1 pin. Output swing can be adjusted to the desired level by applying a DC voltage to VC1 pin. Differential output swing vs. control voltage relationship is given in the plot below. Differential Output vs. Control Voltage 1000 +25C +85C -40C 800 600 6 400 200 0 2.1 2.3 2.5 2.7 2.9 3.1 CONTROL VOLTAGE VC1 (V) In order to adjust the DC voltage on VC1 pin a resistor, Rc (R7 in application circuit), should be connected between VC1 pin and VCC as shown in the figure below. The value of the resistor can be chosen using the following equation as a function of VC1. VC1 DC voltage value can be chosen by using the plot given above. 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] limiting amplifiers - smt DIFFERENTIAL VOLTAGE (mV) 1200 6 - 10