Analog Devices Inc. AD8348ARU-REEL7

RF DEMOD IC 50MHZ-1GHZ 28TSSOP
Quadrature Dmod 75MHz 28-Pin TSSOP T/R
Modulator / Demodulator 50 MHz TO 1000 MHz Quadrature
Ic,Quadrature Demodulator,Bipolar,Tssop,28Pin,Plastic
Baseband Circuit, Bipolar, PDSO28
The AD8348 is a broadband quadrature demodulator with an integrated intermediate frequency (IF), variable gain amplifier (VGA), and integrated baseband amplifiers. It is suitable for use in communications receivers, performing quadrature demodulation from IF directly to baseband frequencies. The baseband amplifiers are designed to interface directly with dual-channel ADCs, such as the AD9201, AD9283, and AD9218, for digitizing and post-processing. The IF input signal is fed into two Gilbert cell mixers through an X-AMP® VGA. The IF VGA provides 44 dB of gain control. A precision gain control circuit sets a linear-in-decibel gain characteristic for the VGA and provides temperature compensation. The LO quadrature phase splitter employs a divide-by-2 frequency divider to achieve high quadrature accuracy and amplitude balance over the entire operating frequency range. The AD8348 is fabricated on an advanced bipolar process, operating on a single 3 or 5 volt supply, packaged in space saving 28 lead thin shrunk small outline (TSSOP) package and fully specified over the –40 to 85 C temperature range Samples AD8348ARU and evaluation boards AD8348-EVAL are available Other Modulator/Demodulator products AD8345 250MHz – 1GHz RF/IF Modulator AD8346 800MHz – 2.5GHz Modulator AD8347 800MHz – 2.7GHz Demodulator AD8349 700MHz – 2.7GHz Modulator