GENERAL DESCRIPTION

The AD8312 is a complete, low cost subsystem for the measurement ofRF signals in the frequency range of50 MHz to 3.5 GHz .It has a typical dynamic range of 45 dB and is intended for use in a wide variety of cellular handsets and other wireless devices. It provides a wider dynamic range and better accuracy than possible using discrete diode detectors. In particular, its temperature stability is excellent over the fulloperating range of −40°C to+85°C.

FEATURES

Complete RF detector function

Typical range: −45 dBm to 0 dBm, re 50 Ω

Frequency response from 50 MHz to 3.5GHz

Temperature-stable linear-in-dB response

   Accurate to 3.5GHz

Rapid response: 85/120ns (rise/fall)

   Low power: 12 mW at 2.7 V