LM2903AS-13

Overview

The LM2903AS-13 is a dual differential voltage comparator manufactured by Diodes Incorporated, housed in an SO-8 surface-mount package. It features an 'A' grade with a typical input offset voltage of 1mV and maximum of 2mV at +25°C. The device operates on a single supply from 2V to 36V or split supplies of ±1V to ±18V. Supply current is 0.6mA typical at 5V. Input bias current is 25nA typical, and the common-mode input range includes ground. The open-collector output can sink up to 16mA and is compatible with TTL, MOS, and CMOS logic families.

Feature Summary

• Low input offset voltage specification for precision comparison tasks
• Wide operating voltage range supporting both single and split power supplies
• Input common-mode voltage range extends to include the negative rail
• Open-collector outputs allow flexible interfacing with various logic standards

Applications

• Precision voltage monitoring circuits
• Threshold detection systems
• Logic level translation between different voltage domains
• Waveform generation and shaping

Procurement Notes

Verify that the ordering suffix '-13' corresponds to tape and reel packaging as specified in the manufacturer's ordering guide. Confirm the 'S' package code matches the required SO-8 footprint dimensions. Ensure the 'A' suffix is selected if the design requires the tighter 1mV typical offset voltage rather than the standard grade.

Selection Notes

Select this component when low offset voltage accuracy is critical compared to standard comparators. The wide supply range makes it suitable for battery-powered applications where voltage drops significantly. Verify that the open-collector output configuration aligns with the system's pull-up requirements and logic interface needs.

Part Context

This part belongs to the LM2901/2903 series of dual and quad differential comparators. The LM2903 variant specifically contains two independent comparators within a single chip. The series is designed for direct interface with digital logic families while maintaining low power consumption relative to supply voltage magnitude.

Replacement Considerations

LM2903S-13 serves as the standard grade alternative with higher offset voltage specifications. LM2903AM8-13 offers the same electrical performance but utilizes an MSOP-8 package instead of SO-8.