AD605ARZ

The AD605ARZ is a dual-channel, linear-in-dB variable gain amplifier (VGA) from Analog Devices, designed for high-performance, wide bandwidth gain control applications. Operating from a single 5 V supply, it features differential inputs and a unipolar gain control for ease of use. The device provides two independent channels, each with a selectable gain range and variable gain scaling.

Key electrical specifications include a bandwidth of 40 MHz (-3 dB), an input noise spectral density of 1.8 nV/√Hz at maximum gain, and programmable gain ranges from -14 dB to +34 dB or 0 dB to +48 dB. The variable gain scaling can be set between 20 dB/V and 40 dB/V. It operates with a supply voltage of 4.5V to 5.5V and consumes approximately 90 mW per channel.

The AD605ARZ is available in a 16-SOIC surface mount package. Its stable gain with temperature and supply variations, along with its ability to drive ADCs directly, makes it suitable for applications such as ultrasound and sonar time-gain controls, and high-performance AGC systems.

This amplifier is designed for applications requiring precise and wide-range variable gain control. The surface mountable 16-SOIC package facilitates integration into compact circuit designs.