MAX40001AUT22+T

Overview

The MAX40001AUT22+T is a single-channel precision analog comparator manufactured by Analog Devices Inc./Maxim Integrated. It features an open-drain output and operates within a supply voltage range of 1.7V to 5.5V, consuming a typical supply current of 0.9µA. The device includes a factory-trimmed internal voltage reference set at 2.22V with ±1% initial accuracy. It provides high RF immunity through internal filtering and maintains stable operation across an extended temperature range from -40°C to +125°C.

Feature Summary

• Integrates a precision voltage reference to eliminate the need for external components
• Provides high radio frequency interference immunity via built-in signal filtering
• Features an open-drain output stage suitable for wired-OR logic configurations

Applications

• Cell phones
• Tablets and consumer accessories
• Notebook computers
• Portable medical instruments and wearables
• Level detectors

Procurement Notes

Verify the specific ordering suffix to confirm the package type and internal reference voltage value. Confirm RoHS compliance status as indicated by the plus sign in the part number. Check current production status and availability constraints directly with authorized distributors or the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when board space is limited and low power consumption is critical. Choose the MAX40001 variant specifically if an open-drain output is required for interfacing with different logic levels or implementing wired-OR connections. Ensure the system supply voltage falls within the specified operational range to maintain performance guarantees.

Part Context

This device belongs to the MAX40000/MAX40001 family of nanoPower comparators designed for portable electronics. The AUT22 suffix indicates the SOT-23-6 package configuration and a fixed 2.22V internal reference. This family addresses applications requiring tight board space and strict power constraints while maintaining high precision.

Replacement Considerations

MAX40001ANT22+T (WLP Package)

FAQ

What is the function of the REF pin on the MAX40001AUT22+T?

The REF pin outputs the internal 2.22V voltage reference. It can source and sink up to 100nA and should be bypassed with a capacitor close to the device for stability.

How does the open-drain output of the MAX40001 differ from the MAX40000?

The MAX40001 has an open-drain output that requires an external pull-up resistor, allowing it to interface with voltages higher than VDD. The MAX40000 uses a push-pull output stage.