LM2903A-SO1R-S

Overview

The LM2903A-SO1R-S is a dual differential comparator manufactured by 3PEAK, housed in an 8-SOP surface-mount package. It operates on a single supply voltage ranging from +2.5 V to +36 V or dual supplies of ±1.25 V to ±18 V. The device features extremely low power consumption with a supply current of 150 μA per channel. Key electrical characteristics include a maximum input bias current of 1 nA and a maximum offset voltage of ±6.0 mV. The input common-mode voltage range includes ground, and the internal differential input voltage range equals the supply voltage. It supports output saturation levels suitable for direct interfacing with TTL and CMOS logic families.

Feature Summary

• Ultra-low power consumption optimized for battery-operated applications
• Wide single or dual power supply voltage compatibility
• Input common-mode voltage range extends to ground potential
• Direct interface capability with standard TTL and CMOS logic

Applications

• Battery-powered monitoring systems requiring minimal quiescent current
• Voltage threshold detection circuits in portable electronics
• Signal conditioning interfaces between analog sensors and digital logic
• Over-voltage or under-voltage protection schemes

Procurement Notes

Verify the specific suffix 'SO1R-S' against the official 3PEAK datasheet to confirm pinout and packaging dimensions match the 8-SOP specification. Ensure the ordering code corresponds to the correct tape-and-reel quantity if automated assembly is required. Cross-reference the manufacturer's latest revision notes for any changes in mechanical tolerances or material compliance declarations prior to final procurement approval.

Selection Notes

Select this component when design constraints demand low static current draw alongside precise voltage comparison. The inclusion of ground-referenced input capability simplifies single-supply circuit topologies. Verify that the ±6.0 mV offset voltage meets the accuracy requirements of the target application. Consider the thermal performance within the -40°C to 125°C operating range for environmental robustness.

Part Context

This part belongs to the LM2903A series of low-power dual comparators produced by 3PEAK. It serves as a functional equivalent to industry-standard LM2903 devices, offering comparable electrical performance in a modern surface-mount package. The series is designed for general-purpose voltage sensing tasks where power efficiency is a primary design criterion.

Replacement Considerations

Compatible substitutes include the LM2903 variants from other manufacturers such as Texas Instruments or STMicroelectronics, provided pinouts and electrical specifications align. Verify that alternative sources maintain the same 150 μA/ch supply current and ±6.0 mV offset voltage limits to ensure circuit compatibility.