ADA4891-3ARUZ

Instrumentation, Op Amps, Buffer Amps Overview

The ADA4891-3ARUZ is a triple-channel, low-cost CMOS high-speed operational amplifier with rail-to-rail output. It features a −3 dB bandwidth of 220 MHz at G = +1 and a slew rate of 170 V/μs. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V, drawing 4.4 mA per amplifier. It includes dedicated power-down pins for each channel, allowing individual control. The input common-mode range extends 300 mV below the negative rail.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Triple-channel architecture with independent power-down functionality
• Rail-to-rail output stage maximizing dynamic range
• High-speed performance with fast settling time
• Extended input common-mode range extending below the negative rail

Instrumentation, Op Amps, Buffer Amps Applications

• Automotive infotainment systems
• Automotive driver assistance systems
• Imaging applications such as CCD buffers
• Active filters
• Coaxial cable drivers

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific package type and temperature grade against the official Analog Devices ordering guide. Confirm that the W-grade specifications are required if tighter offset voltage limits are necessary for the application design.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when multiple high-speed channels are needed in a compact footprint. The integrated power-down feature reduces system power consumption during idle states. Ensure the load requirements do not exceed the linear output current capabilities specified in the datasheet.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the ADA4891 family, which includes single, dual, and quad variants. The -3 suffix indicates three amplifiers per package. The ARUZ designation specifies the 14-lead TSSOP package with an extended operating temperature range of −40°C to +125°C.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

ADA4891-3ARZ-RL

Instrumentation, Op Amps, Buffer Amps FAQ

How does the power-down feature function?

Each amplifier has a dedicated power-down pin (PD1, PD2, PD3). Driving these pins low powers down the respective amplifier, reducing quiescent current significantly.

What is the input common-mode voltage range?

The input common-mode voltage range extends from −VS − 0.3 V to +VS − 0.8 V, allowing operation slightly below the negative supply rail.