AD8332ARUZ-R7

Overview

The AD8332ARUZ-R7 is a dual-channel, ultralow noise linear-in-dB variable gain amplifier (VGA) from Analog Devices. It integrates an ultralow noise preamplifier (LNA), an X-AMP VGA with 48 dB range, and a selectable gain postamplifier. The device operates on a single 5 V supply with a quiescent current of 27.5 mA per channel. Key electrical parameters include a 100 MHz bandwidth, 650 V/µs slew rate, and 0.82 nV/√Hz input voltage noise. It features active input impedance matching, programmable output clamping, and a gain scaling factor of 50 dB/V.

Feature Summary

• Integrates an ultralow noise preamplifier with low voltage and current noise specifications for high-fidelity signal acquisition.
• Provides a wide 48 dB gain range via the X-AMP technology with precise linear-in-dB control scaling.
• Includes a selectable gain postamplifier to optimize performance for specific ADC resolution requirements.
• Features user-adjustable output clamping levels to prevent overload in subsequent stages.

Applications

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

Procurement Notes

Verify the specific suffix R7 indicates reel packaging when sourcing. Confirm the manufacturer is Analog Devices Inc. Ensure the component meets the required operating temperature range of -40°C to +85°C. Check for RoHS compliance status as specified in the official documentation before integration.

Selection Notes

Select this component for applications requiring dual-channel amplification with ultralow noise characteristics. It is suitable for driving high-speed ADCs due to its optimized output drive capabilities. Consider the 100 MHz bandwidth and 50 dB/V gain scaling for precise control requirements in RF or ultrasound front-ends.

Part Context

This part belongs to the AD8331/AD8332/AD8334 family of ultralow noise VGAs. While the AD8331 is single-channel and the AD8334 is quad-channel, the AD8332 provides dual-channel functionality. All variants share similar core technologies including the X-AMP VGA and integrated LNA, differing primarily in channel count and package options.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.