MAX9022AUA-T

Overview

The MAX9022AUA-T is a dual micropower comparator from the MAX9021/MAX9022/MAX9024 family, manufactured by Analog Devices Inc. It operates on a single supply voltage ranging from 2.5V to 5.5V and consumes 2.8µA of supply current per comparator. The device features a typical propagation delay of 3µs and includes built-in 4mV hysteresis for noise immunity. Input offset voltage is typically ±1mV with an input bias current of 3nA. It utilizes an 8-pin µMAX package and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Dual-channel configuration optimized for low-power consumption in portable applications
• Built-in internal hysteresis provides noise immunity and prevents oscillations during slow-moving input signals
• Rail-to-rail output swing capability with reduced switching current to eliminate power-supply glitches
• No phase reversal occurs for overdriven inputs within the specified common-mode voltage range

Applications

• Battery-powered portable systems
• Mobile communications devices
• Sensor-signal detection circuits
• Photodiode preamplifiers
• Digital line receivers

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm RoHS compliance status as indicated by suffixes. Check datasheet revisions for updated electrical characteristics. Ensure proper handling for ESD-sensitive components. Validate package markings against official ordering information.

Selection Notes

Select this part when dual comparators are required in space-constrained designs. Consider the 2.8µA quiescent current for battery life optimization. Verify that the 3µs propagation delay meets system timing requirements. Ensure input signals remain within the specified common-mode range relative to supply rails.

Part Context

This component belongs to the MAX902x series of micropower comparators. The MAX9022 variant specifically integrates two independent comparator channels. It shares architectural similarities with the single-channel MAX9021 and quad-channel MAX9024. All variants utilize identical core comparator design principles for consistent performance across channel counts.

Replacement Considerations

Direct pin-compatible replacements include other dual comparators from the same family such as MAX9022AUA+T. Cross-family alternatives require verification of supply voltage ranges, package dimensions, and electrical specifications.