AD22057RZ

Overview

The AD22057RZ is a single-supply difference amplifier designed for amplifying and low-pass filtering small differential voltages from sources with large common-mode voltages. It features a default overall gain of 20 V/V, alterable via external resistors to a range of 31 to 3160. The device operates on supply voltages from +3.0 V to +36 V, with an input common-mode range extending from below ground to 6 times (VS – 1 V). Key specifications include a differential input resistance of 400 kΩ, quiescent current of 200 µA, and an operating temperature range of –40°C to +125°C. It supports 1-, 2-, or 3-pole low-pass filtering and includes transient spike protection.

Feature Summary

• Single-supply difference amplifier architecture optimized for high common-mode voltage rejection
• Configurable gain adjustment allowing output scaling from x1 to x160 relative to internal preamplifier stages
• Integrated midscale offset capability for accurate bipolar signal processing
• Built-in transient spike protection and RFI filtering mechanisms

Applications

• Current sensing in motor control systems
• Interface for pressure transducers and position indicators
• Signal conditioning for strain gages and accelerometers

Procurement Notes

Verify the specific suffix 'RZ' corresponds to the 8-lead SOIC package variant when sourcing. Confirm that the component status aligns with project lifecycle requirements, as availability may vary by region. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS input structure.

Selection Notes

Select this component when interfacing low-level sensor signals with high common-mode voltages using a single power supply. Consider the adjustable gain range if transducer scaling errors require compensation. Evaluate the need for integrated low-pass filtering to simplify circuit design compared to discrete solutions.

Part Context

The AD22057RZ belongs to the AD22057 family of single-supply sensor interface amplifiers manufactured by Analog Devices. It shares functional characteristics with other variants such as the AD22057N and AD22057R, differing primarily in packaging and reel configuration. This series is engineered for robust performance in automotive and industrial environments requiring precise differential signal amplification.

Replacement Considerations

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