ADA4891-1ARJZ-RL

Overview

The ADA4891-1ARJZ-RL is a single-channel, low-cost CMOS high-speed rail-to-rail amplifier from Analog Devices. It features a −3 dB bandwidth of 220 MHz at G = +1 and a slew rate of 170 V/μs. The device supports single-supply operation with a wide voltage range of 2.7 V to 5.5 V. Its output stage swings to within 50 mV of the supply rails, providing maximum dynamic range. Key electrical parameters include an input offset voltage of ±2.5 mV, an input bias current of ±50 pA, and a quiescent current of 4.4 mA per amplifier.

Feature Summary

• High-speed performance with fast settling time for signal integrity
• Rail-to-rail output capability maximizing dynamic range
• True single-supply operation with extended negative input range
• Low power consumption suitable for battery-operated systems

Applications

• Automotive infotainment systems
• Imaging applications such as CCD buffers
• Consumer video equipment
• Active filters
• Photodiode preamplifiers

Procurement Notes

Verify the specific package type and suffix against the manufacturer's ordering guide to ensure compatibility with your PCB footprint. Confirm that the component meets automotive qualification requirements if intended for vehicle electronics. Check the latest datasheet revision for any updates to absolute maximum ratings or thermal characteristics before finalizing the design.

Selection Notes

Select this amplifier when high bandwidth and fast settling are required in a single-channel configuration. It is suitable for designs needing rail-to-rail output swing on a single supply. Consider the thermal resistance of the SOT-23-6 package for power dissipation calculations. Ensure the application does not require the disable feature available only in the triple-channel variant.

Part Context

This component belongs to the ADA4891 family, which includes dual, triple, and quad channel variants. All members share similar high-speed CMOS architecture and performance characteristics. The family is designed for cost-sensitive applications requiring high performance in imaging and video processing. The single-channel version offers flexibility for designs requiring fewer channels than the multi-channel options.

Replacement Considerations

ADA4891-1ARZ

FAQ

Does the ADA4891-1 have a power-down feature?

No, the power-down feature is only available in the ADA4891-3 and ADA4891-3W variants.

What is the input common-mode voltage range?

The input common-mode voltage range extends from −VS − 0.3 V to +VS − 0.8 V.