ADRF6520 - Analog Devices

ADRF6520 Dual Programmable Filters and VGAs

The ADRF6520 is a matched pair of fully differential low noise and low distortion programmable filters and variable gain amplifiers (VGAs). Each channel is capable of rejecting large, out of band interferers while reliably boosting the wanted signal, thus reducing the bandwidth and resolution requirements on the analog-todigital converters (ADCs). The excell.

Features

Matched VGAs and programmable filters Maximum gain: 53 dB Continuous gain control range: 60 dB Filter bypass mode I/Q bandwidth ±1 dB gain flatness: >1250 MHz 4-pole Butterworth filter I/Q bandwidth: 36 MHz to 720 MHz RMS detector IMD3: <−55 dBc for 1.5 V p-p composite output HD2, HD3: <−55 dBc for 1.5 V p-p output Noise figure: 10.5 dB at maximum gain NF < 11 dB over 12 dB of VGA2 gain backoff 100 Ω differential input, low impedance output Optional dc output offset correction SPI-programmable filter corners Single 3.3 V supply operation with power-down feature APPLICATIONS Point-to-point and .