BA2901KN-E2

Overview

The BA2901KN-E2 is a quad analog comparator manufactured by ROHM Semiconductor. It operates within a supply voltage range of +2.0V to +36.0V (single) or ±1.0V to ±18.0V (split). The device features an open collector output, ground-sense input and output capability, and a maximum operating temperature of +125°C. Key electrical parameters include a typical supply current of 0.8mA, a maximum input offset voltage of 7mV, and a response time of 1.3µs.

Feature Summary

• Operable with single or split power supplies
• Ground-sense input and output operation
• Open collector output configuration

Applications

• General use
• Current monitor
• Battery monitor
• Multi vibrator

Procurement Notes

Verify the specific suffix 'KN' against official ROHM documentation, as it may indicate a specialized package or automotive grade variant not explicitly detailed in the general datasheet. Confirm availability status and lead times directly with the manufacturer or authorized distributors before procurement.

Selection Notes

Select this component for applications requiring low power consumption and wide supply voltage flexibility. Ensure the design accommodates the open collector output structure and verify that the required operating temperature range aligns with the +125°C maximum rating specified for the BA2901 series.

Part Context

This part belongs to the BA2901 series of high-reliability ground sense comparators from ROHM. It integrates four independent high-gain voltage comparators on a silicon monolithic integrated circuit. The series is designed for general-purpose applications where small current consumption and wide operating voltage ranges are critical requirements.

Replacement Considerations

BA2901SF-E2

FAQ

What is the input common-mode voltage range?

The input common-mode voltage range extends from VEE to VCC-1.5V.

Does the device support ground sensing?

Yes, both the input and output terminals are operable at ground level.