LM2901A-SR

Overview

The LM2901A-SR is a quad independent voltage comparator manufactured by 3PEAK in a 14-SOP surface-mount package. It operates on a single supply from +2.5 V to +36 V or dual supplies of ±1.25 V to ±18 V. Key electrical specifications include a maximum input offset voltage of ±6.0 mV, a maximum input bias current of 1 nA at 25°C, and a quiescent current of 150 μA per channel. The device supports an operating temperature range of −40°C to 125°C and features open-collector outputs capable of wired-AND configurations.

Feature Summary

• Low power consumption with supply current drain independent of the supply voltage, suitable for battery operation.
• Input common-mode voltage range includes ground even when operated from a single supply.
• Outputs designed to directly interface with TTL and CMOS logic families.
• Internal differential input voltage range equals the supply voltage.

Applications

• High-speed line or digital line receivers
• Peak and zero-crossing detectors
• Threshold detectors and discriminators
• Sensing applications at ground or supply lines

Procurement Notes

Verify the specific package variant (SOP14 vs TSSOP14) as ordering suffixes determine physical dimensions. Confirm moisture sensitivity level requirements against storage conditions. Ensure ESD handling protocols meet the specified 2-kV HBM rating during assembly. Validate that the open-collector output configuration aligns with the pull-up resistor requirements of the target logic interface.

Selection Notes

Select this component for designs requiring low static power dissipation across wide voltage ranges. The inclusion of ground in the common-mode input range simplifies single-supply sensor interfacing. Verify that the required response time meets system timing constraints under specific load and capacitance conditions. Consider the thermal resistance characteristics if multiple channels are driven near saturation limits.

Part Context

This device belongs to the LM2903A/LM2901A series of 36-V low-power comparators. It provides four independent comparator circuits on a single monolithic substrate. The series is engineered for high reliability in industrial and consumer electronics where power efficiency and direct logic interfacing are critical design parameters.

Replacement Considerations

LM2901DR2G is listed as a similar alternative part number.