GENERAL DESCRIPTION

The ADRF6510 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-ofband interferers while reliably boosting the wanted signal, thus reducing the bandwidth and resolution requirements on the analog-to-digital converters (ADCs). The excellent matching between channels and their high spurious-free dynamic range over all gain and bandwidth settings make the ADRF6510 ideal for quadrature-based (IQ) communication systems with dense constellations, multiple carriers, and nearby interferers.

FEATURES

Matched pair of programmable filters and VGAs

Continuous gain control range: −5 dB to +45 dB

6-pole filter

1 MHz to 30 MHz in 1 MHz steps, 0.5 dB corner frequency

SPI programmable

6 dB front-end gain step

IMD3: >55 dBc for 1.5 V p-p composite output

HD2, HD3: >60 dBc for 1.5 V p-p output

Differential input and output

Adjustable output common-mode voltage

Optional dc output offset correction

Power-down feature

Single 5 V supply operation

APPLICATIONS

Baseband I/Q receivers

Diversity receivers

ADC drivers