AD8367
AD8367 is Linear-in-dB VGA manufactured by Analog Devices.
FEATURES
Broad-range analog variable gain:
- 2.5 d B to +42.5 d B 3 d B cutoff frequency of 500 MHz Gain up and gain down modes Linear-in-d B, scaled 20 m V/d B 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 plete, linear IF AGC amplifiers High speed data I/O
GENERAL DESCRIPTION
The AD8367 is a high performance 45 d B variable gain amplifier with linear-in-d B 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 peting techniques.
The input is applied to a 9-stage, 200 Ω resistive ladder network. Each stage has 5 d B of loss, giving a total attenuation of...
