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ADA4961 Datasheet

Part Number ADA4961
Manufacturers Analog Devices
Logo Analog Devices
Description RF DGA
Datasheet ADA4961 DatasheetADA4961 Datasheet (PDF)

Data Sheet Low Distortion, 3.2 GHz, RF DGA ADA4961 FEATURES High speed −3 dB bandwidth: 3.2 GHz −1 dB bandwidth: 1.8 GHz Slew rate: 12,000 V/μs Digitally adjustable gain Voltage gain: −6 dB to +15 dB Power gain: −3 dB to +18 dB 5-bit parallel or SPI bus gain control with fast attack IMD3/HD3 distortion, maximum gain, 5 V, high performance (HP) mode IMD3/HD3 at 1 GHz: −90 dBc/−83 dBc IMD3/HD3 at 1.5 GHz: −85 dBc/−75 dBc IMD3/HD3 at 2 GHz: −70 dBc/−70 dBc Low noise Noise density referred to outp.

  ADA4961   ADA4961






Part Number ADA4960-1
Manufacturers Analog Devices
Logo Analog Devices
Description Low Distortion Ultrahigh Speed Differential ADC Driver
Datasheet ADA4961 DatasheetADA4960-1 Datasheet (PDF)

Preliminary Technical Data FEATURES Adjustable output common-mode voltage Externally adjustable gain −3 dB bandwidth of 3GHz, (all gains) Low harmonic distortion (H2/H3 SE->DIFF) -77/-67 dBc @ 250 MHz -69/-63 dBc @ 500 MHz -52/-63 dBc @ 1GHz IMD3 @ 1GHz = 67dBc Slew rate 8000 V/μs Fast overdrive recovery of 1 ns Low input voltage noise of 3.6 nV/√Hz Low power dissipation: 60 mA quiescent current 0.1 dB gain flatness to TBD MHz Available in 16-Lead and 24-Lead LFSCP packages Low Distortion Ultra.

  ADA4961   ADA4961







RF DGA

Data Sheet Low Distortion, 3.2 GHz, RF DGA ADA4961 FEATURES High speed −3 dB bandwidth: 3.2 GHz −1 dB bandwidth: 1.8 GHz Slew rate: 12,000 V/μs Digitally adjustable gain Voltage gain: −6 dB to +15 dB Power gain: −3 dB to +18 dB 5-bit parallel or SPI bus gain control with fast attack IMD3/HD3 distortion, maximum gain, 5 V, high performance (HP) mode IMD3/HD3 at 1 GHz: −90 dBc/−83 dBc IMD3/HD3 at 1.5 GHz: −85 dBc/−75 dBc IMD3/HD3 at 2 GHz: −70 dBc/−70 dBc Low noise Noise density referred to output (RTO): −154 dBm/Hz Noise figure: 5.5 dB at AV = 15 dB, 1 GHz Differential impedances: 100 Ω input, 50 Ω output Low power mode operation, power-down control Single 3.3 V or 5 V supply operation Available in 24-lead, 4 mm × 4 mm LFCSP APPLICATIONS ADC driver for 10-bit to 14-bit GSPS converters RF/IF gain blocks Line drivers Instrumentation Satellite communications Data acquisition Military systems GENERAL DESCRIPTION The ADA4961 is a high performance, BiCMOS RF digital gain amplifier (DGA), optimized for driving heavy loads out to 2.0 GHz and beyond. The device typically achieves −90 dBc IMD3 performance at 500 MHz and −85 dBc at 1.5 GHz. This RF performance allows GHz converters to achieve their optimum performance with minimal limitations of the driver amplifier or constraints on overall power that typically result from GaAs amplifiers. This device can easily drive 10-bit to16-bit HS converters. For many receiver applications, antialias filter (AAF) designs can be simplified or not.


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