BA2903SF-E2

Overview

The BA2903SF-E2 is a dual analog comparator manufactured by ROHM Semiconductor, housed in an 8-SOP surface-mount package. It operates on a single supply voltage ranging from 2 V to 36 V or dual supplies of ±1 V to ±18 V. The device features open-collector outputs capable of sourcing 16 mA per channel. Key electrical specifications include a typical response time of 1.3 µs, a maximum input offset voltage of 7 mV at 5 V, and a maximum input bias current of 0.25 µA at 5 V. The quiescent supply current is typically 0.6 mA. It functions within a temperature range of -40°C to +105°C.

Feature Summary

• Supports wide operating supply voltage ranges for flexible power design
• Enables ground-sensed input and output operation near zero volts
• Integrates electrostatic protection circuits with high human-body model ratings

Applications

• General-purpose signal comparison circuits
• Voltage monitoring systems requiring ground-referenced inputs
• Industrial control logic interfacing

Procurement Notes

Verify component authenticity through authorized distributors as the part is marked Not Recommended for New Designs (NRND). Confirm RoHS compliance status via official datasheets before integration. Check for alternative lead-free packaging options if required by specific manufacturing standards. Ensure supply chain stability due to potential obsolescence risks associated with legacy components.

Selection Notes

Select this component for applications requiring dual comparators with low offset voltage and wide supply voltage tolerance. Consider the 8-SOP package constraints for PCB layout. Evaluate thermal performance within the specified operating temperature range. Verify that open-collector output requirements match downstream circuit pull-up configurations.

Part Context

This device belongs to the BA2903 series of standard open-collector comparators. It shares functional similarities with other members like the BA2903F-E2 but utilizes the SF suffix indicating specific packaging or reliability enhancements. The series is designed for general-purpose use where ground-level signal detection is necessary.

Replacement Considerations

The LM2903EYFVM-CTR is listed as a manufacturer-recommended substitute. Other similar alternatives include the LM193DR. Verify pinout compatibility and electrical parameter alignment before substitution.