ADA4891-2ARZ-R7

Overview

The ADA4891-2ARZ-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 small-signal bandwidth of 240 MHz at unity gain and a slew rate of 170 V/µs. The device supports single-supply operation with a voltage range of 2.7 V to 5.5 V, providing an output swing within 50 mV of the supply rails. Key electrical specifications include a quiescent current of 4.4 mA per amplifier, an input offset voltage of ±2.5 mV, and an input bias current of ±50 pA. It operates over an extended temperature range from −40°C to +125°C.

Feature Summary

• High-speed performance with fast settling time for accurate signal processing
• Rail-to-rail output stage maximizing dynamic range in single-supply applications
• Low distortion characteristics suitable for precision video and imaging circuits

Applications

• Automotive infotainment systems
• Imaging applications such as CCD buffers
• Active filters requiring low distortion
• Consumer video equipment
• Contact image sensor buffers

Procurement Notes

Verify the specific package type associated with the ARZ suffix against official documentation before procurement. Confirm that the R7 designation indicates reel packaging if required for automated assembly. Ensure compatibility with automotive qualification standards if deploying in vehicle environments. Cross-reference the manufacturer's ordering guide to validate availability and lead times through authorized channels.

Selection Notes

Select this component when a dual-channel configuration is required alongside high bandwidth and low power consumption. The rail-to-rail output capability makes it suitable for low-voltage single-supply designs where maximum dynamic range is critical. Consider the thermal resistance of the SOIC-8 package for heat dissipation requirements in enclosed spaces.

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 pinout configurations. The dual-channel version utilizes an 8-lead SOIC or MSOP package, offering a compact solution for space-constrained designs compared to the 14-lead packages used by the triple and quad versions.

Replacement Considerations

ADA4891-2ARMZ