HMC842LC4B v03.0914 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 Supports Single-Ended or Differential Operation Short, intermediate, & Long Haul Fiber Optic Applications Power Consumption: 465 mW Broadband Test & Measurement Less than 500 fs Additive RMS Jitter Serial Data Transmission up to 45 Gbps Fast Rise and Fall Times: <12ps 2 Clock Buffering up to 28 GHz 24 Lead 4x4mm SMT Package: 16mm Functional Diagram General Description 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 4 x 4 mm SMT package. Electrical Specifications, T = +25C, Vee = -3.3V A Parameter Conditions Min. Typ. Max Units Power Supply Voltage 5 % Tolerance -3.47 -3.3 -3.13 V VAC1 = VAC2 = -0.3V Power Supply Current 120 140 160 mA (Vout = 930 mVp-p diff 40 Gbps) 1 Output Amplitude Control Voltage -1.4 -0.3 0 V (VAC1, VAC2) Maximum Data Rate 45 Gbps Maximum Clock Rate 28 32 GHz Single-ended, peak-to-peak 50 1000 Input Amplitude mVp-p Differential, peak-to-peak 100 2000 Input High Voltage -0.5 0.5 V Input Low Voltage -1 0 V Information furnished by Analog Devices is believed to be accurate and reliable. However, no For price, delivery, and to place orders: Analog Devices, Inc., For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 rights of third parties that may result from its use. Specifications subject to change without notice. No Phone: 978-250-3343 Fax: 978-250-3373 Order online at www.hittite.com Phone: 781-329-4700 Order online at www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. 1 Trademarks and registered trademarks are the property of their respective owners. Application Support: Phone: 1-800-ANALOG-D Application Support: Phone: 978-250-3343 or RFMG-hsl analog.com HIGH SPEED LOGIC - SMTHMC842LC4B v03.0914 45 Gbps, FANOUT BUFFER w/ PROGRAMMABLE OUTPUT VOLTAGE Electrical Specifications, (continued) Parameter Conditions Min. Typ. Max Units Output Amplitude Differential, peak-to-peak 40 Gbps 400 1200 mVp-p Output High Voltage VAC = -0.3 -10 mV Output Low Voltage VAC = -0.3 -550 mV Input Return Loss frequency < 32 GHz 10 dB Output Return Loss frequency < 32 GHz 7 dB 2 Deterministic Jitter, Jd 3 ps, pp 28 GHz Clock Input 0.3 ps rms Additive Random Jitter Jr 32 GHz Clock Input 0.6 ps rms 2 Rise Time, tr 11 ps 2 Fall Time, tf 11 ps Propagation Delay, td 10 ps 2 OUT1 to OUT2 Data Skew, t 2 ps skew 1 VAC1=VC2 and VAC2=VC1 on evaluation board 23 2 Data Input: 40 Gbps PRBS 2 -1 pattern, 150 mVp-p single-ended Differential Output Swing vs. 1 2 1 2 DC Current vs. Supply Voltage Supply Voltage 200 1200 175 1100 150 1000 125 900 100 800 +25C +25C +70C +70C -40C -40C 75 700 50 600 -3.47 -3.41 -3.36 -3.3 -3.24 -3.19 -3.13 -3.47 -3.41 -3.36 -3.3 -3.24 -3.19 -3.13 SUPPLY VOLTAGE Vee (V) SUPPLY VOLTAGE Vee (V) 3 1 Differential Output Swing vs. VAC Differential Output Swing vs. Frequency 1400 1400 1200 1200 1000 1000 800 800 600 600 +25C +70C +25C -40C 400 400 +70C -40C 200 200 0 0 -1.4 -1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0 4 8 12 16 20 24 28 32 CONTROL VOLTAGE VAC (V) FREQUENCY (GHz) 23 1 VAC = -0.3V 2 Input data rate: 40 Gbps PRBS 2 -1 3 Frequency = 20 GHz Information furnished by Analog Devices is believed to be accurate and reliable. However, no For price, delivery, and to place orders: Analog Devices, Inc., For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 rights of third parties that may result from its use. Specifications subject to change without notice. No Phone: 978-250-3343 Fax: 978-250-3373 Order online at www.hittite.com Phone: 781-329-4700 Order online at www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. 2 Trademarks and registered trademarks are the property of their respective owners. Application Support: Phone: 1-800-ANALOG-D Application Support: Phone: 978-250-3343 or RFMG-hsl analog.com DIFFERENTIAL VOLTAGE (mVp-p) DC CURRENT (mA) DIFFERENTIAL VOLTAGE (mVp-p) DIFFERENTIAL VOLTAGE (mVp-p) HIGH SPEED LOGIC - SMT