BU7231SG-TR

Comparators Overview

The BU7231SG-TR is a single-channel CMOS low-voltage push-pull comparator manufactured by Rohm Semiconductor. It operates within a supply voltage range of +1.8V to +5.5V on a single power source, or ±0.9V to ±2.75V in dual-supply configurations. The device features a typical quiescent current of 0.005mA and an input bias current of 0.001nA. Key electrical specifications include a maximum input offset voltage of 11mV, a typical response time of 1.7µs, and a voltage gain of 90dB. It supports full-amplitude input and output voltage ranges.

Comparators Feature Summary

• Supports low-voltage operation with a wide supply range from 1.8V to 5.5V
• Features full-amplitude input and output capabilities for extended signal handling
• Utilizes a push-pull output structure to drive loads effectively
• Incorporates built-in electrostatic protection circuits for enhanced reliability

Comparators Applications

• Low-power portable electronic devices requiring minimal current consumption
• Battery-operated systems utilizing single-supply architectures
• Signal conditioning circuits in industrial control environments
• Threshold detection applications in consumer electronics

Comparators Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct packaging and tape-and-reel specifications. Confirm that the SSOP-5 package dimensions align with your PCB footprint requirements. Check for RoHS compliance status and lead-free certification if required by your manufacturing standards. Ensure the operating temperature range meets your environmental design constraints.

Comparators Selection Notes

Select this component when designing circuits that demand ultra-low input bias current and low quiescent power consumption. It is suitable for applications where full-swing input and output are necessary without external level shifting. Consider the 1.7µs response time for moderate-speed threshold detection tasks. Verify compatibility with single-supply voltages starting at 1.8V for battery-powered designs.

Comparators Part Context

This part belongs to the BU7231/BU7251 family of monolithic CMOS comparators. These integrated circuits combine high input impedance with low power consumption, making them ideal for modern low-voltage digital and analog interfaces. The series is designed to replace older bipolar comparator technologies in space-constrained and energy-efficient applications.

Comparators Replacement Considerations

Publicly confirmed substitute part numbers for this specific component were not identified in the provided reference data.