ADA4051-2ACPZ-R2

Overview

The ADA4051-2ACPZ-R2 is a dual-channel, micropower, zero-drift operational amplifier manufactured by Analog Devices Inc. It operates on a single supply voltage ranging from 1.8 V to 5.5 V and features rail-to-rail input and output capabilities. The device utilizes an innovative chopping technique to achieve extremely low offset voltage of 15 μV maximum and offset drift of 20 nV/°C. Key electrical parameters include a gain-bandwidth product of 125 kHz, a typical supply current of 13 μA per amplifier, and high power supply rejection ratio (PSRR) and common-mode rejection ratio (CMRR) exceeding 110 dB. It is specified for the extended industrial temperature range of −40°C to +125°C.

Feature Summary

• Utilizes an innovative chopping technique to suppress offset-related ripple in the DC domain without increasing in-band noise.
• Features rail-to-rail input and output swing capability while operating from a low 1.8 V to 5.5 V single supply.
• Delivers micropower performance with a typical supply current of 13 μA per amplifier channel.
• Provides high precision with very low offset voltage (15 μV max) and minimal offset voltage drift (20 nV/°C).

Applications

• Pressure and position sensors
• Temperature measurements
• Electronic scales
• Medical instrumentation
• Battery-powered equipment

Procurement Notes

Verify the specific package type associated with the ACPZ suffix against the manufacturer's official ordering guide, as it denotes an LFCSP package. Confirm that the R2 suffix corresponds to the correct reel quantity and packaging format required for your assembly process. Ensure compatibility with the 8-lead LFCSP footprint dimensions provided in the datasheet outline drawings before finalizing procurement.

Selection Notes

Select this component when designing battery-powered systems requiring high precision signal conditioning with minimal power consumption. It is suitable for applications needing rail-to-rail operation at low voltages, such as 1.8 V systems. Consider the 125 kHz bandwidth and slow slew rate for low-frequency sensor interfaces. Verify that the external circuitry can handle the recommended post-filtering to suppress residual chopper ripple if necessary for ultra-low noise requirements.

Part Context

The ADA4051-2ACPZ-R2 belongs to the ADA4051 series of zero-drift operational amplifiers from Analog Devices. This series includes single-channel (ADA4051-1) and dual-channel (ADA4051-2) variants. The device is part of a broader family of micropower, high-precision amplifiers designed for portable and battery-operated applications where low power and high accuracy are critical constraints.

Replacement Considerations

Consult the manufacturer's datasheet Table 1 for compatible devices within the zero-drift op amp series, such as the ADA4051-1 for single-channel needs or other members like the AD8628/AD8638 for different supply voltage requirements.