ADA4691-2ACBZ-RL

Overview

The ADA4691-2ACBZ-RL is a dual-channel, low-power operational amplifier featuring rail-to-rail output and shutdown functionality. It operates on a single supply of 2.7 V to 5 V or dual supplies of ±1.35 V to ±2.5 V. Key electrical specifications include a gain-bandwidth product of 3.6 MHz, a typical input bias current of 0.5 pA, and a voltage noise density of 16 nV/√Hz at 1 kHz. The device draws 180 µA per amplifier and supports an extended industrial temperature range from -40°C to +125°C.

Feature Summary

• Dual independent shutdown pins enable significant power reduction in battery-operated systems.
• Rail-to-rail output capability maximizes dynamic range within low-voltage single-supply applications.
• Ultra-low input bias current minimizes errors when interfacing with high-impedance sensors.

Applications

• Photodiode amplifiers
• Portable medical instrumentation
• ADC drivers

Procurement Notes

Verify the specific package variant against the datasheet ordering guide, as the ADA4691-2 family includes multiple packages such as WLCSP and LFCSP. Confirm that the 'RL' suffix corresponds to the required reel packaging format for your assembly line. Ensure compatibility with the intended supply voltage range before finalizing procurement.

Selection Notes

Select this component for designs requiring low quiescent current alongside precision signal conditioning. The inclusion of dedicated shutdown pins distinguishes it from standard variants like the ADA4692-2, offering enhanced power management capabilities. Verify that the 3.6 MHz bandwidth meets the system's frequency response requirements.

Part Context

This part belongs to the Analog Devices ADA4691 series, which integrates low-noise performance with micropower consumption. The series provides options for dual and quad configurations, catering to various channel count requirements while maintaining consistent electrical characteristics across the family.

Replacement Considerations

The ADA4692-2 serves as a functional substitute lacking shutdown pins. Other alternatives within the portfolio include the ADA4691-4 for quad-channel needs or the ADA4692-4 for non-shutdown quad applications.