KA2903

Overview

The KA2903 is a dual analog comparator manufactured by onsemi. It features an open-collector output configuration suitable for interfacing with various logic families. The device operates within a wide supply voltage range, supporting both single and split power supplies. It includes internal compensation to prevent oscillation during switching transitions. The component is housed in an SOP-8 surface-mount package designed for compact circuit board layouts.

Feature Summary

• Dual-channel architecture providing two independent comparison functions within a single integrated circuit
• Open-collector outputs allowing flexible voltage level shifting and wired-OR logic connections
• Internal frequency compensation ensures stable operation without requiring external components

Applications

• Over-voltage and under-voltage detection circuits
• Threshold sensing for battery management systems
• Window comparator configurations for signal monitoring

Procurement Notes

Verify the specific suffix of the part number, as variations such as KA2903D or LM2903 variants may exist. Confirm RoHS compliance status through official datasheets before integration. Check current lifecycle status, as older comparator models may be discontinued or recommended for non-new designs. Ensure the selected package matches the PCB footprint requirements.

Selection Notes

Select this component when dual independent comparisons are required in space-constrained designs. Consider the open-collector output limitation if push-pull drive capability is necessary. Evaluate the input offset voltage specifications against the precision requirements of the application. Verify that the operating temperature range aligns with the environmental conditions of the target system.

Part Context

This device belongs to the family of general-purpose analog comparators produced by onsemi. It serves as a fundamental building block for signal conditioning and threshold detection tasks. Similar devices in this category often share pinouts but may differ in speed, offset voltage, or supply voltage ranges. The dual configuration offers a cost-effective alternative to using two separate single comparators.