5 GHz, Low Distortion ADC Driver/Line Driver Data Sheet ADA4960-1 FEATURES FUNCTIONAL BLOCK DIAGRAM 3 dB bandwidth of 5 GHz (A = 6 dB) V VCC BIAS CELL Single resistor programmable gain: 0 dB to 18 dB PD VOCM Differential or single-ended input to differential output Low harmonic distortion (HD2/HD3 A = 6 dB) VIP V 88/69 dBc 250 MHz IIP 77/66 dBc 500 MHz VOP R 73/72 dBc 1 GHz G IIN VON IMD3 1 GHz = 63 dBc Slew rate VIN 8700 V/s (A = 6 dB, 2 V step) V GND 6600 V/s (A = 18 dB, 2 V step) ADA4960-1 V Fast settling: 1 ns to 1%, 1.4 ns to 0.1% Figure 1. Fast overdrive recovery: 6.7 ns to 1%, 9.3 ns to 0.5% 1.2 Single-supply operation: 5 V A = 6dB V 1.0 0.1 dB gain flatness to 300 MHz A = 18dB V 0.8 DC level translation A = 12dB V 0.6 80% Available in 16-lead LFCSP 0.4 APPLICATIONS 0.2 A (dB) SLEW RATE (V/s) 0 V Differential ADC drivers for giga-sample ADCs 6 8700 0.2 GBPS line drivers with pre-emphasis 12 7700 18 6600 0.4 High speed data acquisition 0.6 20% Electronic surveillance countermeasures 0.8 Pulse capture and conditioning 1.0 Oscilloscopes 1.2 Satellite communications 0.2 0 0.2 0.4 0.6 0.8 1.0 Single-ended-to-differential converters TIME (ns) RF/IF gain blocks Figure 2. Rise Time, VOUT = 2 V p-p, TA = 25C, For AV = 6 dB, AV = 12 dB, and AV = 18 dB GENERAL DESCRIPTION The ADA4960-1 is a high performance, differential amplifier The device is optimized for the best combination of slew rate, optimized for RF and IF applications. It achieves better than 63 dB bandwidth, and broadband distortion. These attributes allow it IMD3 performance for frequencies up to and beyond 1 GHz, to drive a wide variety of ADCs. It is ideally suited for driving making it an ideal driver for 8-bit to 10-bit giga-sample analog- mixers, pin diode attenuators, SAW filters, and multi-element to-digital converters (ADCs). discrete devices. The buffered inputs of the ADA4960-1 isolate the gain-setting The user accessible gain adjust and bandwidth extension features resistor (R ) from the signal inputs, maintaining a constant 10 k allow configuration of the ADA4960-1 for line driver and G input resistance, easing matching and input drive requirements. channel equalization applications. The ADA4960-1 has a nominal 150 differential output impedance. The quiescent current of the ADA4960-1 is typically 60 mA. When The ADA4960-1 is optimized for wideband, low distortion disabled, it consumes less than 3 mA, offering excellent input-to- performance for frequencies up to and beyond 1 GHz. These output isolation. attributes, together with its adjustable gain capability, make this Fabricated on an Analog Devices, Inc., high speed SiGe process, device the amplifier of choice for general-purpose IF and broad- the ADA4960-1 is available in a compact 3 mm 3 mm, 16-lead band applications where low distortion, noise, and power are critical. LFCSP. It operates over the temperature range of 40C to +85C. Rev. A Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no 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, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20102017 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. 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Technical Support www.analog.com V (V) OUT 08458-001 08458-047ADA4960-1 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Circuit Description ........................................................................ 13 Applications ....................................................................................... 1 Basic Structure ............................................................................ 13 Functional Block Diagram .............................................................. 1 Applications Information .............................................................. 14 General Description ......................................................................... 1 Basic Connections ...................................................................... 14 Revision History ............................................................................... 2 Input and Output Interfacing ................................................... 14 Specif ications ..................................................................................... 3 Gain Adjust .................................................................................. 15 Absolute Maximum Ratings ............................................................ 6 Bandwidth Extension ................................................................. 15 Thermal Resistance ...................................................................... 6 ADC Interfacing ......................................................................... 16 Maximum Power Dissipation ..................................................... 6 Line Driver Applications ........................................................... 16 ESD Caution .................................................................................. 6 Overdrive and Recovery ............................................................ 17 Pin Configuration and Function Descriptions ............................. 7 Layout, Grounding, and Bypassing .............................................. 18 Typical Performance Characteristics ............................................. 8 Outline Dimensions ....................................................................... 19 Test Circuits ................................................................................. 12 Ordering Guide .......................................................................... 19 REVISION HISTORY 3/2017Rev. 0 to Rev. A Changed LFCSP WQ to LFCSP .................................. Throughout Updated Outline Dimensions ....................................................... 19 Changes to Ordering Guide .......................................................... 19 4/2010Revision 0: Initial Version Rev. A Page 2 of 19