ADRF6518

Preliminary Technical Data FEATURES 63 MHz Dual Programmable Filters and Variable Gain Amplifiers ADRF6518 FUNCTIONAL BLOCK DIAGRAM Matched pair of programmable filters and triple VGAs Continuous gain control range: 72 dB Digital gain control: 30 dB 6-pole Butterworth filter: 1 MHz to 63 MHz in 1 MHz steps, 1 dB corner frequency Preamplifier and postamplifier gain steps Peak detector Filter bypass mode, −3 dB bandwidth (BW) VGA2 and VGA3 21 dB/12 dB gain: 350 MHz/700 MHz IMD3: >65 dBc for 1.5 V p-p composite output HD2, HD3: >65 dBc for 1.5 V p-p output Differential input and output Flexible output and input common-mode ranges Optional dc output offset correction SPI programmable filter corners and gain steps Single 3.3 V supply operation with power-down feature APPLICATIONS Baseband I/Q receivers Diversity receivers ADC drivers Point-to-point and point-to-multipoint radios Instrumentation Medical Figure 1. http://www.DataSheet4U.net/ GENERAL DESCRIPTION The ADRF6518 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 excellent matching between channels and their high spurious-free dynamic range over all gain and bandwidth settings make the ADRF6518 ideal for quadrature-based (IQ) communic...