5 GHz Differential Amplifier Drives Gigasample ADCs on Just 60 mA of Quiescent Current

The ADA4960-1 differential amplifier consumes just 60 mA of quiescent current when operating up to 1 GHz. The amplifier features a 8,700 V/μs (volts per microsecond) slew rate (AV = 6 dB, 2-V step) and wideband, low-distortion performance for frequencies up to and beyond 1 GHz, which make it effective for RF (radio frequency) and IF (immediate frequency) wired communications applications in industrial and instrumentation, defence electronics and aerospace designs. The user accessible gain adjust and bandwidth extension features allow configuration of the ADA4960-1 for line driver and channel equalization applications.

ADA4960-1 Differential Amplifier Key Features and Benefits

* −3 dB bandwidth of 5 GHz (AV = 6 dB)
* Single resistor programmable gain: 0 dB to 18 dB
* Differential or single-ended input to differential output
* Low harmonic distortion (HD2/HD3 @ AV = 6 dB)

−88/−69 dBc @ 250 MHz

−77/−66 dBc @ 500 MHz

−73/−72 dBc @ 1 GHz

* −63 dBc IMD3 @ 1 GHz
* Slew rate:
o 8,700 V/μs (AV = 6 dB, 2-V pk-pk output)
* Fast settling time of 1 ns to 1% and overdrive recovery of 10ns.
* 5-V single-supply operation
* 0.1 gain flatness to 300 MHz