Hot-selling and scarce AD8347ARUZ 0.8 GHz to 2.7 GHz Direct Conversion Quadrature Demodulator TSSOP28 spot stock

Product Descriptions

The AD8347¹ is a broadband direct quadrature demodulatorwith RF and baseband automatic gain control (AGC) amplifiers .It is suitable for use in many communications receivers,performingquadrature demodulation directly to baseband frequencies . Theinput frequency range is 800 MHz to 2.7 GHz . The outputs canbe connected directly to popular A-to-D converters such as theAD9201 and AD9283 .

The RF input signal goes through two stages of variable gainamplifiers prior to two Gilbert-cell mixers . The LO quadraturephase splitter employs polyphase filters to achieve highquadrature accuracy and amplitude balance over the entireoperating frequency range. Separate I and Q channel variablegain amplifiers follow the baseband outputs of the mixers . TheRF and baseband amplifiers together provide 69.5 dB of gaincontrol. A precision control circuit sets the linear-in-dB RF gainresponse to the gain control voltage .

Product Features

Integrated RF and baseband AGC amplifiers

Quadrature phase accuracy 1° typ

I/Q amplitude balance 0.3 dB typ

Third-order intercept (IIP3) +11.5 dBm @ min gain

Noise figure 11 dB @ max gain

AGC range 69.5 dB

Baseband level control circuit

Low LO drive −8 dBm

ADC-compatible I/Q outputs

Single supply 2.7 V to 5.5 V

Power-down mode

28-lead TSSOP package

Product Applications

Cellular base stations

Radio links

Wireless local loop

IF broadband demodulators

RF instrumentation

Satellite modems

Product Specification

Product Photos

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