ADA4891-2WARMZ-R7

Overview

The ADA4891-2WARMZ-R7 is a dual-channel, low-cost CMOS high-speed rail-to-rail operational amplifier manufactured by Analog Devices Inc. It features a −3 dB bandwidth of 240 MHz at unity gain 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 component is qualified for automotive applications and supports operation across an extended temperature range of −40°C to +125°C.

Feature Summary

• High-speed performance with fast settling time suitable for demanding signal processing tasks
• True single-supply capability with input voltage range extending below the negative rail
• Rail-to-rail output stage maximizing dynamic range in low-voltage environments
• Qualified for automotive applications ensuring reliability under strict environmental conditions

Applications

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

Procurement Notes

Verify the specific W grade suffix against official documentation to confirm tight DC parameter tolerances. Confirm that the R7 suffix indicates reel packaging compatible with automated assembly processes. Ensure the ordering code matches the exact package type required for your PCB layout. Cross-reference the manufacturer's latest datasheet revision to validate all electrical specifications before finalizing procurement.

Selection Notes

Select this component when high bandwidth and fast transient response are critical within a low-power budget. The rail-to-rail output capability makes it suitable for single-supply designs requiring maximum signal swing. Consider the automotive qualification if the application demands compliance with industry-specific reliability standards. Evaluate the thermal dissipation characteristics relative to the chosen package style for optimal heat management.

Part Context

This part belongs to the ADA4891 family, which includes single, triple, and quad channel variants. All members share identical core electrical characteristics but differ in channel count and pin configurations. The family is designed to provide cost-effective high-performance amplification for video and imaging signals. Variants allow designers to scale channel density without changing the underlying amplifier architecture or control logic.

Replacement Considerations

ADA4891-2ARZ-R7

FAQ

Does the ADA4891-2WARMZ-R7 include a power-down feature?

No, the power-down feature is exclusively available on the ADA4891-3 and ADA4891-3W variants.

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.