LM2903AVQPWRQ1

Overview

The LM2903AVQPWRQ1 is an automotive-grade, dual-channel differential voltage comparator manufactured by Texas Instruments. It operates on a single supply voltage ranging from 2V to 36V or dual supplies of ±1V to ±18V. The device features open-collector outputs capable of sinking up to 20mA and includes rail-to-rail output capability. Key electrical specifications include a maximum input offset voltage of 2mV at 5V, a maximum input bias current of 0.25µA at 5V, and a typical response time of 1.3µs. It functions within a temperature range of -40°C to +125°C and is housed in an 8-TSSOP package.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for durability and reliability
• Dual differential inputs enable precise comparison of two analog signals
• Open-collector outputs allow flexible interfacing with various logic families
• Wide single-supply operation supports diverse power system architectures

Applications

• Fire and carbon monoxide alarm detector circuits
• Over-voltage and under-voltage monitoring systems
• Window comparator configurations
• Threshold detection in automotive sensor interfaces

Procurement Notes

Verify the specific suffix 'Q1' confirms automotive grade status and AEC-Q100 compliance. Ensure the 'AV' designation matches required input offset voltage specifications. Confirm the 'PWR' suffix corresponds to the TSSOP-8 package variant. Cross-reference the manufacturer part number against official Texas Instruments documentation to validate authenticity and revision level before procurement.

Selection Notes

Select this component when automotive reliability and wide supply voltage ranges are required. The low input offset voltage ensures high accuracy in threshold detection applications. The open-collector output simplifies interface design with pull-up resistors. Consider thermal management requirements given the operating temperature range and package type.

Part Context

This device belongs to the LM2903-Q1 series of dual comparators designed specifically for automotive environments. It shares functional similarities with the commercial LM2903 but meets stricter automotive quality standards. The series is commonly used in safety-critical systems where reliable signal comparison is essential.

Replacement Considerations

LM2903AVQPWRG4Q1 is a verified alternative offering identical functionality and automotive qualification within the same TSSOP-8 package.