MAX982ESA+

Comparators Overview

The MAX982ESA+ is a dual micropower analog comparator in an 8-pin SOIC package. It operates from a single 2.5V to 11V supply or ±1.25V to ±5.5V dual supplies, drawing a maximum of 4.5µA supply current. The device features two comparators with open-drain outputs and includes an internal 1.182V voltage reference with ±2% accuracy. It offers a typical propagation delay of 12µs at 10mV overdrive and supports programmable hysteresis via the HYST pin.

Comparators Feature Summary

• Ultra-low quiescent current consumption for battery-powered applications
• Integrated 1.182V precision bandgap voltage reference
• Programmable hysteresis using external resistors on the HYST pin
• Open-drain outputs suitable for wire-OR configurations and level shifting

Comparators Applications

• Battery switchover circuits
• Window detectors for undervoltage/overvoltage monitoring
• Level translators between bipolar and single-ended signals
• Threshold detectors and oscillator circuits

Comparators Procurement Notes

Verify the suffix 'ESA' confirms the -40°C to +85°C temperature range and SOIC-8 package. Confirm RoHS compliance status as indicated by the '+' suffix. Ensure the specific lot date code meets project requirements. Cross-reference the manufacturer's latest ordering guide for any potential obsolescence notices or alternate packaging options.

Comparators Selection Notes

Select this component when low power consumption is critical alongside precise threshold detection. The integrated reference eliminates the need for external voltage sources. Verify that the open-drain output architecture aligns with the system's pull-up requirements. Consider the 12µs response time against signal frequency needs. Ensure input common-mode ranges accommodate the application's voltage levels.

Comparators Part Context

Part of the MAX971–MAX984 family of ultra-low-power comparators. Shares architectural similarities with MAX971/MAX981 (single channel) and MAX973/MAX983 (window comparator). Differs from MAX972/MAX974/MAX982/MAX984 by having two channels with an internal reference and hysteresis capability. Compatible with other Maxim Integrated micropower logic families.

Comparators Replacement Considerations

• MAX982CSA+

Comparators FAQ

How is hysteresis programmed on the MAX982ESA+?

Hysteresis is implemented by connecting two resistors between the REF pin and the HYST pin, and between the HYST pin and V-. Connecting HYST directly to REF disables hysteresis.

What is the function of the REF pin?

The REF pin provides access to the internal 1.182V bandgap voltage reference, which can be used as a threshold voltage or for programming hysteresis.

Can the MAX982ESA+ operate with dual supplies?

Yes, it supports dual supplies ranging from ±1.25V to ±5.5V, in addition to single supplies from 2.5V to 11V.