AD605BRZ Datasheet PDF - ADI

●GENERAL DESCRIPTION

●The AD605 is a low noise, accurate, dual-channel, linear-in-dB variable gain amplifier (VGA), optimized for any application requiring high performance, wide bandwidth variable gain control. Operating from a single 5 V supply, the AD605 provides differential inputs and unipolar gain control for ease of use. Added flexibility is achieved with a user-determined gain range and an external reference input that provide user-determined gain scaling (dB/V).

●FEATURES

●  2 independent linear-in-dB channels

●  Input noise at maximum gain: 1.8 nV/√Hz, 2.7 pA/√Hz

●  Bandwidth: 40 MHz (–3 dB)

●  Differential input

●  Absolute gain range programmable

●    –14 dB to +34 dB (FBK shorted to OUT) through

●    0 dB to 48 dB (FBK open)

●  Variable gain scaling: 20 dB/V through 40 dB/V

●  Stable gain with temperature and supply variations

●  Single-ended unipolar gain control

●  Output common mode independently set

●  Power shutdown at lower end of gain control

●  Single 5 V supply

●  Low power: 90 mW/channel

●  Drives ADCs directly

●APPLICATIONS

●  Ultrasound and sonar time-gain controls

●  High performance AGC systems

●  Signal measurement