MAX40001ANT22+T

Overview

The MAX40001ANT22+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 to 2.22V with ±1% initial accuracy. It is housed in a 6-bump wafer-level package (WLP) measuring 1.11mm x 0.76mm. Electrical specifications include a propagation delay of 14µs at 100mV overdrive, an input offset voltage of up to 14mV, and operation across an extended temperature range from -40°C to +125°C.

Feature Summary

• Integrates a high-precision internal voltage reference to eliminate the need for external components.
• Features ultra-low power consumption suitable for battery-operated portable electronics.
• Includes internal filtering to provide high immunity against radio frequency interference.
• Offers rail-to-rail input common-mode voltage range extending slightly beyond the supply rails.

Applications

• Cell phones
• Portable instruments
• Notebook computers
• Level detectors

Procurement Notes

Verify the specific ordering suffix 'ANT22' to confirm the 2.22V internal reference value and WLP package type. Confirm RoHS compliance status as indicated by the '+' suffix. Check current production status and availability through authorized distributors, as lead times may vary based on manufacturing schedules.

Selection Notes

Select this component when board space is limited due to its compact WLP footprint. Choose the MAX40001 variant specifically for open-drain output requirements, which allows wired-OR configurations or logic level translation via pull-up resistors. Ensure the required reference voltage matches the available options, noting that the ANT22 suffix corresponds to the 2.22V setting.

Part Context

This part belongs to the MAX40000/MAX40001 nanoPower comparator family. These devices are designed for applications requiring tight board space and low power constraints. The MAX40001 distinguishes itself from the MAX40000 by utilizing an open-drain output stage rather than a push-pull configuration, while sharing identical electrical characteristics and internal reference options.

Replacement Considerations

MAX40001AUT22+T offers the same electrical specifications but utilizes a SOT23-6 package instead of the WLP package.

FAQ

What is the function of the REF pin on the MAX40001ANT22+T?

The REF pin provides access to the internal 2.22V voltage reference. It can be bypassed with a capacitor to ground for stability and is capable of sourcing or sinking up to 100nA.

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 different voltage levels. The MAX40000 features a push-pull output that actively drives both high and low states without needing an external resistor.