ADA4891-4WARUZ-R7

Overview

The ADA4891-4WARUZ-R7 is a quad-channel, low-cost CMOS high-speed rail-to-rail operational amplifier manufactured by Analog Devices Inc. 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, with an input common-mode range extending 300 mV below the negative rail. It provides a linear output current of 125 mA and maintains a quiescent current of 4.4 mA per amplifier. The W grade specifies an input offset voltage of ±3.1 mV over the full temperature range.

Feature Summary

• High-speed performance with fast settling time suitable for demanding video applications
• True single-supply capability with extended input common-mode range
• Rail-to-rail output stage maximizing dynamic range near supply rails
• Low distortion characteristics ensuring signal fidelity

Applications

• Automotive infotainment systems
• Imaging and consumer video equipment
• Active filters
• Coaxial cable drivers
• Contact image sensor buffers

Procurement Notes

Verify the specific ordering suffix R7 indicates tape-and-reel packaging when sourcing this component. Confirm that the W grade designation matches the required DC precision specifications for your design. Ensure compatibility with the 14-lead SOIC or TSSOP package footprint during PCB layout. Check for automotive qualification requirements if deploying in vehicle environments.

Selection Notes

Select this part when multiple channels are required within a compact footprint. The quad configuration reduces board space compared to using individual single or dual amplifiers. Consider the 220 MHz bandwidth and 170 V/μs slew rate for high-frequency signal processing tasks. Evaluate the 4.4 mA per amplifier power consumption against system thermal constraints.

Part Context

This component belongs to the ADA4891 family, which includes single (ADA4891-1), dual (ADA4891-2), triple (ADA4891-3), and quad (ADA4891-4) variants. All members share identical electrical characteristics but differ in channel count and pinout configurations. The family is designed for cost-sensitive, high-performance analog signal conditioning applications.

Replacement Considerations

Direct functional substitutes within the same family include the ADA4891-1, ADA4891-2, and ADA4891-3. Note that these alternatives offer different channel counts and require distinct pin assignments. Verify package compatibility before substituting.