BU7445HFV-TR

Overview

The BU7445HFV-TR is a low-power ground-sense operational amplifier manufactured by ROHM Semiconductor. It features a single-channel CMOS architecture housed in a compact HVSOF-5 surface-mount package. The device operates within a supply voltage range of 1.7 V to 5.5 V, ensuring compatibility with low-voltage systems. Key electrical characteristics include a typical quiescent current of 0.04 mA per channel and an input bias current of 1 pA. The amplifier supports full-output swing operation and functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Ground-sense input capability allowing signal processing near the negative rail
• Full output voltage swing for maximum dynamic range utilization
• Ultra-low power consumption suitable for battery-operated applications
• CMOS technology providing high input impedance and low bias current

Applications

• Low-voltage sensor signal conditioning circuits
• Portable electronic devices requiring extended battery life
• Industrial data acquisition systems with single-supply operation
• Battery management system monitoring interfaces

Procurement Notes

Verify the specific datasheet revision and RoHS compliance status directly with the manufacturer before integration. Confirm that the application environment remains within the specified operating temperature limits. Ensure that the PCB layout accommodates the HVSOF-5 package dimensions accurately to maintain thermal and electrical performance standards.

Selection Notes

Select this component when ground-referenced input signals are required without additional level-shifting circuitry. The low quiescent current makes it ideal for energy-constrained designs. Compare gain-bandwidth product and slew rate requirements against other series members if higher speed is needed. Verify that the single-channel configuration meets the system complexity constraints.

Part Context

This part belongs to the BU74xx series of low-voltage operational amplifiers designed for general-purpose analog signal processing. The series emphasizes low power consumption and compatibility with modern low-voltage digital logic families. The BU7445 variant specifically targets applications requiring ground-sense inputs and full output swing capabilities in a minimal footprint package.

Replacement Considerations

Consult official manufacturer documentation for confirmed substitute part numbers. Direct replacements must match the HVSOF-5 package, pinout configuration, and electrical specifications. Verify functional equivalence regarding ground-sense input capability and supply voltage range before substitution.