AD8332ARU-REEL7

Overview

The AD8332ARU-REEL7 is a dual-channel, ultralow noise linear-in-dB variable gain amplifier (VGA) from Analog Devices. It integrates an ultralow noise preamplifier with a voltage noise of 0.74 nV/√Hz and current noise of 2.5 pA/√Hz. The device features a 100 MHz small-signal bandwidth and a 48 dB VGA gain range. It operates on a single 5 V supply with a quiescent current of 27.5 mA per channel. The package is a 28-lead TSSOP.

Feature Summary

• Integrates an ultralow noise preamplifier for high-fidelity signal conditioning
• Provides precise linear-in-dB gain control via a 50 dB/V scaling factor
• Includes selectable output clamping to prevent ADC overload
• Features active input impedance matching without compromising noise performance

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 the reel packaging configuration. Ensure the component matches the required thermal and electrical specifications for the target application environment before finalizing procurement.

Selection Notes

Select this component for applications requiring low noise and wide dynamic range in a dual-channel configuration. Consider the 100 MHz bandwidth and 48 dB gain range when designing for high-speed signal paths. Verify power supply requirements and thermal dissipation capabilities within the TSSOP-28 package constraints.

Part Context

This part belongs to the AD833x family of variable gain amplifiers, which includes single-channel (AD8331) and quad-channel (AD8334) variants. All members share similar core architectures featuring X-AMP technology and integrated preamplifiers, differing primarily in channel count and package options.

Replacement Considerations

Direct substitutes include the AD8331ARUZ-R7 for single-channel applications or the AD8334ACPZ-R7 for quad-channel implementations. Cross-referencing pinouts and thermal characteristics is essential when transitioning between different channel counts within the same product family.