AD22057RZ-RL

Overview

The AD22057RZ-RL 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 includes transient spike protection, RFI filters, and accurate midscale offset capability.

Feature Summary

• Single-supply difference amplifier architecture with integrated preamplifier and output buffer stages
• Input common-mode range extends significantly beyond the supply voltage using a precision resistive attenuator
• Configurable gain adjustment allowing modification from the default value up to higher multipliers
• Integrated low-pass filtering options supporting one-, two-, or three-pole configurations

Applications

• Current sensing interfaces for solenoids and power transistors
• Motor control signal conditioning
• Interface for pressure transducers, position indicators, and strain gages
• Accelerometer signal processing

Procurement Notes

Verify the specific ordering suffix to confirm the reel packaging configuration. Confirm that the component meets RoHS compliance requirements for the intended manufacturing process. Ensure the selected package variant matches the PCB footprint design constraints. Validate the supply chain source against authorized distributor lists to guarantee authenticity.

Selection Notes

Select this component when interfacing sensors with high common-mode voltages relative to the system ground. Consider the gain adjustability if transducer scaling errors require compensation. Evaluate the need for internal filtering versus external solutions based on the application's noise profile. Ensure the supply voltage range aligns with the available power rails in the target system.

Part Context

The AD22057 series consists of single-supply sensor interface amplifiers manufactured by Analog Devices. The RZ suffix indicates the 8-Lead SOIC plastic package. The RL suffix denotes tape and reel packaging. This family is optimized for automotive and industrial applications requiring robust signal conditioning in noisy environments.

Replacement Considerations

Direct functional substitutes within the same product line include the AD22057N, AD22057R, and AD22057R-Reel variants. These parts share identical electrical characteristics but differ in package type or shipping format. Verify pin compatibility and thermal performance before substitution.