ADA4891-2ARZ-RL

Overview

The ADA4891-2ARZ-RL is a dual-channel, high-speed CMOS operational amplifier manufactured by Analog Devices. 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 240 MHz at a gain of +1 and achieves a slew rate of 170 V/µs. It delivers a linear output current of 125 mA with low distortion characteristics, including a Spurious-Free Dynamic Range (SFDR) of 79 dBc at 1 MHz. The quiescent current consumption is 4.4 mA per amplifier.

Feature Summary

• High-speed performance with fast settling time suitable for demanding signal processing applications
• Rail-to-rail output stage enabling maximum dynamic range near the supply rails
• Low power consumption optimized for battery-operated systems
• Automotive qualification ensuring reliability in harsh environments

Applications

• Automotive infotainment systems
• Imaging applications such as CCD buffers
• Active filters
• Coaxial cable drivers
• Contact image sensor buffers

Procurement Notes

Verify that the package type matches the required footprint, specifically the 8-lead SOIC_N configuration. Confirm the suffix indicates reel packaging for automated assembly processes. Ensure the component meets automotive qualification standards if deployed in vehicle electronics. Cross-reference the manufacturer part number against authorized distributor lists to guarantee authenticity and traceability.

Selection Notes

Select this component when a dual-channel solution is required alongside single-channel variants within the same family. Consider the 240 MHz bandwidth and 170 V/µs slew rate for wideband signal integrity. Evaluate the 4.4 mA quiescent current against system power budgets. Verify compatibility with single-supply architectures utilizing voltages between 2.7 V and 5.5 V.

Part Context

This device belongs to the ADA4891 series, which includes single, triple, and quad channel configurations. All variants share identical electrical specifications and architectural features. The series is designed to provide cost-effective, high-performance amplification for video and imaging circuits while maintaining consistent thermal and electrical behavior across different channel counts.

Replacement Considerations

ADA4891-2ARMZ

FAQ

What is the input common-mode voltage range?

The input common-mode voltage range extends from the negative supply rail minus 0.3 V to the positive supply rail minus 0.8 V.

Does the device support shutdown functionality?

No, the ADA4891-2 does not include a power-down pin; only the ADA4891-3 variant offers this feature.