ADCMP393ARZ-RL7

Overview

The ADCMP393ARZ-RL7 is a quad analog comparator manufactured by Analog Devices Inc. It operates on a single supply voltage ranging from 2.3 V to 5.5 V and features rail-to-rail common-mode input voltage capability extending 200 mV beyond the rails. The device guarantees a defined logic low output state during power-up when the supply voltage is below the undervoltage lockout threshold. It draws a typical quiescent current of 26.8 µA and includes an internal hysteresis of approximately 4 mV. The component is housed in a 14-lead SOIC package and supports operation across an extended temperature range from -40°C to +125°C.

Feature Summary

• Features a known power-up state that asserts a logic low output until the supply voltage exceeds the undervoltage lockout threshold.
• Provides rail-to-rail input capability with a common-mode range extending 200 mV beyond the supply rails.
• Includes guaranteed internal hysteresis to prevent output oscillation in noisy environments or with slow-moving signals.

Applications

• Battery management and monitoring systems
• Power supply detection circuits
• Window comparators for voltage level verification
• Threshold detectors and discriminators
• Microprocessor system reset and sequencing

Procurement Notes

Verify the specific ordering suffix RL7 corresponds to the required reel packaging configuration before procurement. Confirm that the standard SOIC package variant matches the intended PCB footprint requirements. Ensure the selected component meets the necessary RoHS compliance standards for the target assembly process. Cross-reference the manufacturer part number against official distributor catalogs to validate authenticity and revision status.

Selection Notes

Select this component for applications requiring multiple independent comparison channels within a compact form factor. The rail-to-rail input stage allows compatibility with signal sources operating near ground or the positive supply rail. Consider the open-drain output architecture, which necessitates external pull-up resistors tailored to the specific logic voltage levels and switching speed requirements of the downstream circuitry.

Part Context

This device belongs to the ADCMP393 family of general-purpose quad comparators designed for low-power single-supply operations. It shares architectural similarities with other members of the series but is distinguished by its specific package configuration and factory reel packaging designation. The component integrates four independent comparators into a single integrated circuit to minimize board space and simplify design complexity.

Replacement Considerations

Direct pin-compatible replacements within the same family include the ADCMP393ARZ without the reel suffix. Verify functional equivalence regarding the undervoltage lockout thresholds and propagation delays when substituting variants with different package styles such as TSSOP.

FAQ

How does the ADCMP393 handle the output state during initial power-up?

The device guarantees a logic low output state when the supply voltage is below the undervoltage lockout threshold, ensuring a defined state before normal comparator operation begins.

What is the behavior of the input voltage range relative to the supply rails?

The comparator features a rail-to-rail common-mode input voltage range that extends 200 mV beyond both the negative and positive supply rails.