AD604 - Ultralow Noise Variable Gain Amplifier

Analog Devices

Datasheet Details

Part number	AD604
Manufacturer	Analog Devices
File Size	723.77 KB
Description	Ultralow Noise Variable Gain Amplifier
Datasheet	AD604 Datasheet

General Description

The AD604 is an ultralow noise, very accurate, dual-channel, linear-in-dB variable gain amplifier (VGA) optimized for timebased variable gain control in ultrasound applications;

however, it supports any application requiring low noise, wide bandwidth, variable gain control.

Each channel of the AD604 provides a 300 kΩ input resistance and unipolar gain control for ease of use.

Key Features

Ultralow input noise at maximum gain 0.80 nV/√Hz, 3.0 pA/√Hz 2 independent linear-in-dB channels Absolute gain range per channel programmable 0 dB to 48 dB (preamplifier gain = 14 dB) through 6 dB to 54 dB (preamplifier gain = 20 dB) ±1.0 dB gain accuracy Bandwidth: 40 MHz (.
3 dB) Input resistance: 300 kΩ Variable gain scaling: 20 dB/V through 40 dB/V Stable gain with temperature and supply variations Single-ended unipolar gain control Power shutdown at lower end of gain control Drive AD.

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