MAX923CPA

Comparators Overview

The MAX923CPA is a dual micro-power, low-voltage comparator featuring an internal 1.182V ±1% bandgap reference and programmable hysteresis. It operates from a single +2.5V to +11V supply or ±1.25V to ±5.5V dual supplies. The device draws less than 4μA quiescent current over temperature and includes TTL/CMOS outputs that sink and source current. Input voltage ranges extend from the negative supply rail to within 1.3V of the positive supply. Propagation delay is typically 12μs with 10mV overdrive. The output stage continuously sources up to 40mA without switching crowbar current.

Comparators Feature Summary

• Ultra-low power consumption with maximum quiescent current under 4μA
• Integrated 1.182V precision bandgap voltage reference
• Programmable hysteresis via dedicated HYST pin for simplified noise immunity
• TTL/CMOS-compatible outputs capable of sourcing up to 40mA

Comparators Applications

• Battery-powered systems requiring minimal standby current
• Threshold detectors for voltage monitoring
• Window comparators for undervoltage and overvoltage protection
• Oscillator circuits utilizing internal reference timing

Comparators Procurement Notes

Verify the specific suffix 'CPA' corresponds to the commercial temperature range (0°C to +70°C) and 8-pin Plastic DIP package. Confirm the manufacturer designation as Analog Devices Inc./Maxim Integrated. Ensure the component meets RoHS compliance standards if required by the assembly process. Cross-reference the datasheet revision to confirm electrical characteristics match the design requirements.

Comparators Selection Notes

Select this component when dual comparators with an integrated reference are needed in a low-power environment. The MAX923CPA is suitable for applications requiring hysteresis adjustment without external feedback networks. Consider the 8-pin DIP package for through-hole prototyping or legacy board designs. Verify that the input common-mode range and output drive capabilities meet the specific signal levels of the application.

Comparators Part Context

The MAX923CPA belongs to the MAX921–MAX924 family of ultra-low-power comparators manufactured by Analog Devices Inc./Maxim Integrated. This series is designed for battery-operated devices where power conservation is critical. The MAX923 variant specifically provides two comparators with an internal reference and programmable hysteresis, distinguishing it from the MAX922 which lacks these features.

Comparators Replacement Considerations

The MAX923CSA serves as a surface-mount alternative in the SO-8 package. The MAX923CUA offers the μMAX package option. For extended temperature ranges, the MAX923EPA (-40°C to +85°C) is available in the same DIP format.