MAX40001ANT12+T

Overview

The MAX40001ANT12+T is a single-channel analog comparator from the nanoPower series, 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. The device consumes a typical supply current of 0.9µA with a maximum of 1.7µA. It includes a factory-trimmed internal voltage reference of 1.252V with ±1% initial accuracy. Key electrical parameters include a propagation delay of 14µs (typical), input offset voltage of 8mV (max at 3.3V), and hysteresis of 2.5mV. It is housed in a 6-bump WLP package measuring 1.08mm x 0.73mm.

Feature Summary

• Integrates a precision voltage reference with ±1% initial accuracy to eliminate external components.
• Features ultra-low micropower consumption suitable for battery-operated portable electronics.
• Includes built-in 2.5mV hysteresis to prevent output oscillation caused by noise or slow-moving signals.
• Provides high RF immunity through internal filtering mechanisms.

Applications

• Cell phones
• Portable medical instruments and wearables
• Level detectors

Procurement Notes

Verify the specific ordering suffix to confirm the integrated reference voltage value and package type. Confirm RoHS compliance status as indicated by the plus sign in the part number. Ensure the open-drain output configuration matches the system logic requirements, noting that a pull-up resistor is necessary for proper operation.

Selection Notes

Select this component when board space is constrained due to its tiny wafer-level package. Choose this model over the push-pull variant if the application requires wired-OR logic capabilities or level shifting between different voltage domains. Verify that the required reference voltage aligns with the available options in the product family.

Part Context

This device belongs to the MAX40000/MAX40001 family of nanoPower comparators designed for tight power and space constraints. The MAX40001 variant specifically utilizes an open-drain output stage, distinguishing it from the MAX40000 which offers a push-pull output. Both share identical low-power characteristics and internal reference options.

Replacement Considerations

MAX40000ANT12+T

FAQ

What is the function of the REF pin on the MAX40001?

The REF pin provides access to the internal voltage reference output. It should be bypassed with a 0.1µF capacitor to ground close to the device to ensure 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 multiple outputs to be connected in parallel. The MAX40000 features a push-pull output capable of sourcing and sinking current without external resistors.