GENERAL DESCRIPTION

The AD8367 is a high performance 45 dB variable gain amplifier with linear-in-dB gain control for use from low frequencies up to several hundred megahertz. The range, flatness, and accuracy of the gain response are achieved using Analog Devices’ X-AMP® architecture, the most recent in a series of powerful proprietary concepts for variable gain applications, which far surpasses what can be achieved using competing techniques.

FEATURES

Broad-range analog variable gain: −2.5 dB to +42.5 dB

3 dB cutoff frequency of 500 MHz

Gain up and gain down modes

Linear-in-dB, scaled 20 mV/dB

Resistive ground referenced input

Nominal ZIN = 200 Ω

On-chip, square-law detector

Single-supply operation: 2.7 V to 5.5 V

APPLICATIONS

Cellular base stations

Broadband access

Power amplifier control loops

Complete, linear IF AGC amplifiers

High speed data I/O