MAX9022ASA+T

Overview

The MAX9022ASA+T is a dual micropower comparator in an 8-pin SO 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. It supports up to 150pF capacitive load without sustained oscillations and operates across a -40°C to +125°C temperature range.

Feature Summary

• Ultra-low power consumption optimized for portable applications
• Built-in 4mV hysteresis prevents oscillation on slow-moving signals
• Rail-to-rail output stage reduces switching current transients
• No phase reversal occurs 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 'ASA+T' corresponds to the 8-pin SO package and tape-and-reel delivery format. Confirm lead-free/RoHS compliance status indicated by the '+' symbol. Ensure the operating temperature range matches the design requirements for the intended environment.

Selection Notes

Select this component for designs requiring low quiescent current and small footprint. The dual configuration suits space-constrained boards. Verify input signal characteristics against the 4mV hysteresis and common-mode voltage limits. Consider the 3µs propagation delay for timing-sensitive digital interfaces.

Part Context

Part of the MAX9021/MAX9022/MAX9024 family of micropower comparators. The MAX9022 specifically provides two independent channels. It shares core electrical specifications with the single-channel MAX9021 and quad-channel MAX9024 variants while differing in pin count and package options.

Replacement Considerations

Cross-reference with MAX9022AKA+T (SOT23-8) or MAX9022AUA+T (µMAX-8) if package form factor changes are acceptable. Electrical performance remains consistent across these variants within the same family.