AD8332ACP-REEL

Overview

The AD8332ACP-REEL 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 postamplifier. The device operates on a single 5 V supply, offering a 100 MHz bandwidth and 650 V/µs slew rate. Key electrical parameters include a typical input voltage noise of 0.74 nV/√Hz, output-referred noise of 40 nV/√Hz in LO gain mode, and a quiescent current of 27.5 mA per channel. It supports active input impedance matching and features a 50 dB/V gain scaling factor.

Feature Summary

• Integrates an ultralow noise LNA with 19 dB gain and an X-AMP VGA providing 48 dB of gain range.
• Features a selectable postamplifier with adjustable output limiting to optimize performance for ADC applications.
• Provides precise linear-in-dB gain control with excellent part-to-part and channel-to-channel matching.

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 package type against the datasheet ordering guide, as the AD8332 is available in both TSSOP and LFCSP packages. Confirm that the REEL suffix corresponds to the required tape and reel quantity specified by Analog Devices. Ensure compatibility with the intended operating temperature range of -40°C to +85°C.

Selection Notes

Select this component when dual-channel ultralow noise amplification is required for frequencies up to 100 MHz. Consider the AD8332 over the AD8331 if two channels are needed, or over the AD8334 if quad-channel capability is not required. Evaluate the postamplifier gain settings to match the dynamic range requirements of downstream analog-to-digital converters.

Part Context

The AD8332 is part of the AD8331/AD8332/AD8334 family of ultralow noise VGAs. While the AD8331 offers a single channel and the AD8334 provides four channels, the AD8332 specifically delivers dual-channel performance. All variants share similar core architectures, including the X-AMP technology and low-noise preamplifiers, but differ in channel count and packaging options.

Replacement Considerations

Public confirmed substitute part numbers: AD8332ARUZ-R7, AD8332ACPZ-R7.