BU7232SF-E2

Comparators Overview

The BU7232SF-E2 is a dual-channel CMOS comparator manufactured by ROHM Semiconductor. It operates on a single supply voltage ranging from 1.8 V to 5.5 V, or dual supplies of ±0.9 V to ±2.75 V. Key electrical specifications include a maximum input offset voltage of 1 mV and a typical input bias current of 0.001 nA (1 pA). The device features a push-pull output capable of full-swing operation and draws a typical circuit current of 0.01 mA per channel. It offers a typical response time of 1.7 µs and a voltage gain of 90 dB. The component is housed in an SOP-8 package and supports an operating temperature range from -40 °C to +105 °C.

Comparators Feature Summary

• Supports low-voltage operation with a wide power supply range from 1.8 V to 5.5 V.
• Features full-amplitude input and output capabilities for rail-to-rail signal handling.
• Incorporates a push-pull output stage to drive loads directly without external pull-up resistors.
• Includes built-in electrostatic protection circuits rated at ±4000 V under the human body model.

Comparators Applications

• Low-power battery-operated electronic devices requiring minimal quiescent current.
• Threshold detection circuits in portable consumer electronics.
• Signal conditioning interfaces where full-swing compatibility with logic levels is required.
• General-purpose comparison tasks in industrial control systems operating within extended temperature ranges.

Comparators Procurement Notes

Verify the specific suffix E2 against the manufacturer's latest documentation to confirm compliance with RoHS directives and material declarations. Ensure that the SOP-8 package dimensions match the target PCB footprint design constraints. Confirm that the reel packaging quantity aligns with production volume requirements. Validate that the component status remains active for long-term supply continuity before finalizing procurement plans.

Comparators Selection Notes

Select this component when designing circuits that demand ultra-low input bias current and operation below 2.5 V. The dual-channel configuration reduces board space compared to single-channel alternatives. Consider the 1.7 µs response time for applications not requiring high-speed switching. The wide operating temperature range makes it suitable for environments exceeding standard commercial limits. Evaluate the push-pull output capability if eliminating external pull-up components is a design priority.

Comparators Part Context

This part belongs to the BU7232SF family of low-voltage CMOS comparators from ROHM Semiconductor. The series is characterized by its ability to function efficiently at supply voltages as low as 1.8 V while maintaining precise offset voltage specifications. The family includes variants with different channel counts and speed characteristics, but the BU7232SF specifically targets general-purpose applications requiring balanced performance between power consumption and accuracy.

Comparators Replacement Considerations

Check for direct pin-compatible substitutes within the same ROHM BU72xx series, such as the BU7231SF for single-channel needs. Verify that any alternative maintains the 1.8 V minimum supply voltage and SOP-8 package form factor. Ensure that replacement parts offer comparable input bias current and offset voltage specifications to maintain circuit accuracy.