GENERAL DESCRIPTION

The AD608 provides a low power, low distortion, low noise mixer as well as a complete, monolithic logarithmic/limiting amplifier that uses a successive-detection technique. In addition, the AD608 provides both a high speed received signal strength indicator (RSSI) output with 80 dB dynamic range and a hard-limited output.

FEATURES

Mixer

−15 dBm, 1 dB compression point

−5 dBm IP3

24 dB conversion gain

>500 MHz input bandwidth

Logarithmic/limiting amplifier

80 dB RSSI range

±3° phase stability over 80 dB range

Low power

21 mW at 3 V power consumption

CMOS-compatible power-down to 300 μW typical

200 ns enable/disable time

APPLICATIONS

PHS, GSM, TDMA, FM, or PM receivers

Battery-powered instrumentation

Base station RSSI measurements