ADA4891-1ARZ-R7

Overview

The ADA4891-1ARZ-R7 is a single-channel, high-speed CMOS operational amplifier from Analog Devices. It features a 220 MHz small-signal bandwidth and a 170 V/µs slew rate at unity gain. The device supports a wide supply range of 2.7 V to 5.5 V with rail-to-rail output capability, swinging within 50 mV of the rails. Key electrical parameters 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 of −40°C to +125°C.

Feature Summary

• High-speed performance with fast settling time for accurate signal reproduction
• Rail-to-rail output stage maximizes dynamic range in low-voltage applications
• Low power consumption suitable for battery-operated systems
• Extended input common-mode range extending below the negative supply rail

Applications

• Automotive infotainment systems
• Imaging and consumer video equipment
• Active filters
• Coaxial cable drivers
• Photodiode preamplifiers

Procurement Notes

Verify that the specific ordering suffix matches the required package type and reel specifications. Confirm the component meets automotive qualification standards if intended for vehicle electronics. Ensure the datasheet revision aligns with your design requirements before finalizing procurement.

Selection Notes

Select this component when a single-channel, high-bandwidth amplifier is required. Consider the rail-to-rail output for maximum voltage swing. Evaluate the 4.4 mA quiescent current against system power budgets. Verify compatibility with the target PCB footprint for the specified package.

Part Context

This part belongs to the ADA4891 family of low-cost, high-speed amplifiers. The family includes dual (ADA4891-2), triple (ADA4891-3), and quad (ADA4891-4) channel variants. All share similar electrical characteristics but differ in channel count and pin configurations.

Replacement Considerations

Direct substitutes within the same family include the ADA4891-2, ADA4891-3, and ADA4891-4, provided the additional channels are acceptable or unused pins can be terminated correctly.