ADA4691-2ACPZ-R7

Overview

The ADA4691-2ACPZ-R7 is a dual-channel, low-power operational amplifier featuring rail-to-rail output and a 3.6 MHz bandwidth. 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 characteristics include a typical supply current of 180 μA per amplifier, very low input bias current of 0.5 pA, and low voltage noise density of 16 nV/√Hz. The device offers a typical offset voltage of 500 μV with a maximum drift of 4 μV/°C over the extended industrial temperature range of −40°C to +125°C.

Feature Summary

• Features independent shutdown pins for each channel to minimize power consumption when inactive.
• Provides rail-to-rail output swing compatible with low-voltage single-supply systems.
• Combines micropower operation with high bandwidth and low distortion for audio applications.

Applications

• Photodiode amplifiers
• Portable medical instrumentation
• Low-side current sense circuits

Procurement Notes

Verify the specific package variant against the datasheet ordering guide, as the ADA4691-2 family includes multiple packages such as LFCSP and WLCSP. Confirm that the suffix matches the required lead frame chip scale package configuration. Ensure compatibility with the intended supply voltage range and thermal requirements for the target application environment.

Selection Notes

Select this component for designs requiring low power consumption alongside moderate bandwidth and precision. The availability of dedicated shutdown controls makes it suitable for battery-operated portable devices where standby current reduction is critical. Consider the rail-to-rail output capability when interfacing with single-supply ADCs or loads.

Part Context

This part belongs to the ADA4691/ADA4692 family of low-power, rail-to-rail output operational amplifiers from Analog Devices. The family distinguishes between the ADA469x series with shutdown functionality and the ADA469x series without. The dual-channel configuration provides two independent amplifiers in a compact footprint, ideal for space-constrained portable electronics.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.