ADA4891-3ARUZ-R7

Overview

The ADA4891-3ARUZ-R7 is a triple-channel, high-speed CMOS operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail output capability and operates on a single supply voltage ranging from 2.7 V to 5.5 V. The device provides a small-signal bandwidth of 220 MHz at a gain of +1 and achieves a slew rate of 170 V/µs. It settles to within 0.1% in 28 ns and delivers a linear output current of 125 mA. The input common-mode voltage range extends 300 mV below the negative rail.

Feature Summary

• Triple-channel architecture with dedicated power-down pins for individual channel control
• Rail-to-rail output stage enabling maximum dynamic range near supply rails
• High-speed performance with fast settling time suitable for video applications
• Low distortion characteristics with wideband operation

Applications

• Automotive infotainment systems
• Automotive driver assistance systems
• Imaging and consumer video equipment
• Active filters and coaxial cable drivers
• Clock buffers and photodiode preamplifiers

Procurement Notes

Verify the specific package type and reel quantity against the official ordering guide before procurement. Confirm that the automotive qualification status aligns with your system requirements. Ensure the datasheet revision matches the design specifications. Check for any lead-free or RoHS compliance documentation relevant to your manufacturing process.

Selection Notes

Select this component when multiple high-speed channels are required in a compact footprint. The integrated power-down feature allows for significant power savings in battery-operated devices. Verify that the 220 MHz bandwidth meets the signal frequency requirements. Consider the thermal dissipation capabilities if operating at elevated ambient temperatures.

Part Context

This part belongs to the ADA4891 family, which includes single, dual, and quad variants. The -3 suffix indicates a triple-channel configuration. The ARUZ suffix denotes the 14-lead TSSOP package with tape and reel packaging. This family is designed for low-cost, high-performance applications requiring rail-to-rail operation.

Replacement Considerations

ADA4891-3ARZ

FAQ

Does the ADA4891-3 include a power-down feature?

Yes, the ADA4891-3 includes dedicated power-down pins (PD1, PD2, PD3) that allow each amplifier channel to be individually disabled to reduce power consumption.

What is the input common-mode voltage range?

The input common-mode voltage range extends 300 mV below the negative supply rail, allowing for true single-supply operation.