AD22050RZ

Overview

The AD22050RZ 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 gain of 20, alterable from 31 to 3160 via external components. The input common-mode range extends from below ground to 6 times (VS – 1 V). The output spans from 20 mV to (VS – 0.2 V) and includes an accurate midscale offset capability. It supports 1-, 2-, or 3-pole low-pass filtering. The device operates on a supply voltage of +3.0 V to +36 V, with an operating temperature range of –40 °C to +125 °C. It is housed in an 8-pin Plastic SOIC package.

Feature Summary

• Single-supply difference amplifier architecture with integrated preamplifier and output buffer
• Input common-mode range extending significantly beyond the supply voltage limit
• Configurable low-pass filtering options including one-, two-, and three-pole implementations
• Accurate midscale offset feature enabling bipolar signal processing

Applications

• Current sensing interfaces
• Motor control systems
• Pressure transducer interface circuits
• Strain gage signal conditioning

Procurement Notes

Verify the specific ordering suffix RZ corresponds to the Plastic SOIC package variant when sourcing. Confirm that the component meets the required temperature range specifications for the intended operational environment. Ensure proper electrostatic discharge precautions are observed during handling due to device sensitivity.

Selection Notes

Select this component when interfacing sensors with high common-mode voltages using a single power supply. Consider the adjustable gain range and filtering capabilities if signal conditioning requirements exceed the default configuration. Evaluate the output swing limitations relative to the downstream analog-to-digital converter input requirements.

Part Context

The AD22050 series comprises single-supply sensor interface amplifiers available in multiple package options. The AD22050RZ specifically denotes the version packaged in a Plastic Small Outline Integrated Circuit (SOIC) format. This family is engineered for applications requiring precise amplification of low-level differential signals amidst high common-mode potentials.

Replacement Considerations

The AD22050N serves as a direct functional substitute within the same product family, offering identical electrical characteristics but housed in a Plastic Mini-DIP package instead of the SOIC form factor.