ADA4891-3ARUZ-RL

Overview

The ADA4891-3ARUZ-RL is a triple-channel, low-cost CMOS high-speed operational amplifier with rail-to-rail output. It operates on a single supply voltage ranging from 2.7 V to 5.5 V and features an input common-mode range extending 300 mV below the negative rail. 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. Each amplifier channel consumes 4.4 mA of quiescent current.

Feature Summary

• Features true single-supply capability with inputs extending 300 mV below the negative rail
• Provides rail-to-rail output swing reaching within 50 mV of each supply rail
• Includes dedicated power-down pins for individual channel control
• Qualified for automotive applications

Applications

• Automotive infotainment systems
• Automotive driver assistance systems
• Imaging applications such as CCD buffers
• Consumer video equipment
• Active filters and coaxial cable drivers

Procurement Notes

Verify that the specific ordering suffix matches the required package type and reel quantity. Confirm the W grade designation if tighter offset voltage specifications are necessary for the design. Ensure the datasheet revision aligns with the manufacturing lot date code to validate performance parameters against the latest testing standards.

Selection Notes

Select this component when multiple high-speed channels are required in a compact footprint. The integrated power-down feature allows for independent channel management, reducing system power consumption during idle states. Verify that the 14-lead TSSOP or SOIC package dimensions fit the available board space and thermal requirements.

Part Context

This part belongs to the ADA4891 family, which includes single, dual, triple, and quad amplifier variants. All members share identical electrical characteristics but differ in channel count and pin configurations. The triple-channel version consolidates three amplifiers into a single package, optimizing board area compared to using separate discrete units.

Replacement Considerations

ADA4891-3ARZ-R7

FAQ

How does the power-down feature function?

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

What is the input common-mode voltage range?

The input common-mode voltage range extends from 300 mV below the negative supply rail up to 0.8 V below the positive supply rail.