MAX9022AUA

Overview

The MAX9022AUA is a dual micropower comparator in an 8-pin µMAX package. It operates from a single supply of 2.5V to 5.5V or dual supplies of ±1.25V to ±2.75V. Each channel consumes 2.8µA typical supply current with a 3µs propagation delay. The device features 4mV internal hysteresis, rail-to-rail output swing, and no phase reversal for overdriven inputs. Input common-mode range extends from VSS to VDD - 1.1V. Operating temperature range is -40°C to +125°C.

Feature Summary

• Ultra-low power consumption of 2.8µA per channel
• Built-in 4mV hysteresis for noise immunity
• Rail-to-rail output voltage swing capability
• No phase reversal when inputs are overdriven

Applications

• Battery-powered portable systems
• Sensor-signal detection circuits
• Digital line receivers
• Threshold detectors and discriminators

Procurement Notes

Verify the specific suffix 'AUA' corresponds to the µMAX-8 package variant. Confirm RoHS compliance status via the '+' designation if required by project specifications. Check manufacturer documentation for current production lifecycle status as availability may vary.

Selection Notes

Select this component for space-constrained designs requiring low quiescent current. Ensure input signals remain within the specified common-mode range. Consider the 3µs propagation delay for timing-sensitive applications. Verify thermal dissipation requirements against the 362mW limit for the µMAX package.

Part Context

Part of the MAX9021/MAX9022/MAX9024 family of micropower comparators. The MAX9022 specifically provides two independent channels in compact surface-mount packages including SOT23, µMAX, and SO formats. Designed for portable electronics where power efficiency and board area are critical constraints.

Replacement Considerations

Pin-compatible alternatives within the same series include MAX9021 (single) and MAX9024 (quad). Cross-reference with other low-power comparators ensuring matching supply voltage ranges and propagation delays.