AD8332ACP-R2

Overview

The AD8332ACP-R2 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, featuring a 100 MHz bandwidth and 650 V/µs slew rate. Key specifications include 19 dB LNA gain, 0.74 nV/√Hz input voltage noise, and programmable output clamping. It supports active input impedance matching and provides precise linear-in-dB scaling for high-performance signal processing.

Feature Summary

• Integrates ultralow noise preamplifier with X-AMP VGA technology for wide dynamic range
• Features selectable postamplifier gain to optimize performance for specific ADC resolutions
• Provides active input impedance matching without compromising noise performance
• Includes user-selectable output clamping level to prevent subsequent stage overload

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 package type associated with the ACP suffix against official documentation, as it may differ from standard TSSOP variants. Confirm availability status directly with authorized distributors or the manufacturer, as stock levels fluctuate. Ensure the ordering code matches the required pin configuration and thermal pad requirements for the selected package style.

Selection Notes

Select this component for applications requiring ultralow noise amplification combined with wide dynamic range gain control. The dual-channel architecture is suitable for differential signal paths. Consider the available packages, such as LFCSP, for compact designs. Verify that the single 5 V supply requirement aligns with the system power budget and that the 100 MHz bandwidth meets the signal frequency needs.

Part Context

The AD8332 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 specifically offers dual channels in various packages including TSSOP and LFCSP. This family is optimized for ultrasound systems and high-speed data acquisition, providing consistent performance characteristics across channel counts.

Replacement Considerations

Direct replacements within the same family include the AD8331 for single-channel applications and the AD8334 for quad-channel requirements. Cross-family alternatives should be evaluated based on noise figures, bandwidth, and supply voltage compatibility.