AD8332ARUZ

Overview

The AD8332ARUZ is a dual-channel, ultralow noise linear-in-dB variable gain amplifier (VGA) from Analog Devices. It features an integrated low-noise preamplifier with 19 dB gain and a 48 dB X-AMP VGA range. The device operates on a single 5 V supply (4.5 V to 5.5 V) with a quiescent current of 27.5 mA per channel. Key electrical parameters include a 100 MHz bandwidth, 650 V/µs slew rate, and 50 mV input offset voltage. It utilizes a 28-lead TSSOP package and supports a gain control voltage range of 0 to 1 V.

Feature Summary

• Integrates an ultralow noise preamplifier with active input impedance matching for optimized signal acquisition.
• Provides precise linear-in-dB gain scaling via a 50 dB/V control interface with factory-trimmed accuracy.
• Includes a selectable postamplifier with adjustable output clamping to prevent overload in downstream ADCs.

Applications

• Ultrasound and sonar time-gain controls
• High performance automatic gain control systems
• I/Q signal processing
• High speed, dual ADC drivers

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and tape/reel specifications. Confirm availability status through authorized distributors as supply conditions may vary. Ensure the component meets required environmental standards such as RoHS compliance before integration into final designs.

Selection Notes

Select this component for applications requiring high linearity and wide dynamic range in dual-channel configurations. The device is suitable for driving high-speed ADCs due to its low output-referred noise and differential signal paths. Consider the available gain modes and output clamping options when designing for specific converter requirements.

Part Context

This part belongs to the AD833x family of ultralow noise VGAs, which includes the single-channel AD8331 and quad-channel AD8334. All variants share similar core architectures but differ in channel count and packaging options. The AD8332 specifically provides dual channels in a 28-lead TSSOP or 32-lead LFCSP format.

Replacement Considerations

The AD8331ARZ serves as a single-channel alternative within the same family. The AD8334ARUZ offers a quad-channel configuration. Verify pin compatibility and thermal requirements when substituting between these variants.