BU7481G-TR

Overview

The BU7481G-TR is a single-channel, high-speed, low-voltage CMOS operational amplifier manufactured by ROHM Semiconductor. It operates within a supply voltage range of 1.8 V to 5.5 V and features a gain-bandwidth product of 2.8 MHz with a slew rate of 3.2 V/µs. The device exhibits an input bias current of 1 pA and an input offset voltage of 1 mV. It provides an output current of 8 mA per channel and consumes 420 µA of operating current. Packaged in a compact SSOP-5 format, it supports surface-mount installation.

Feature Summary

• Ground-sense input capability allowing operation down to the negative supply rail
• Full-amplitude output swing extending close to both supply rails
• Ultra-low input bias current for minimal signal loading
• Integrated phase compensation capacitor for stability

Applications

• Portable battery-powered equipment requiring low voltage operation
• Sensor signal conditioning circuits
• High-speed data acquisition systems
• Low-power analog filtering applications

Procurement Notes

Verify the specific suffix against the official manufacturer datasheet to confirm package type and tape-and-reel specifications. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the part number with authorized distributors to confirm availability and authenticity before procurement.

Selection Notes

Select this component when ground-sense input is required alongside full-output swing in a low-voltage environment. Compare the 2.8 MHz bandwidth and 3.2 V/µs slew rate against application signal frequencies. Consider the 1 pA input bias current for high-impedance source interfaces. Evaluate the SSOP-5 footprint constraints against PCB layout requirements.

Part Context

This device belongs to the BU7481 series of low-voltage high-speed CMOS operational amplifiers from ROHM. The series is characterized by its ability to handle inputs at the negative rail while maintaining high speed and low power consumption. It is distinct from the BU7291 family, which offers full-input swing rather than ground-sense capability.

Replacement Considerations

Official substitute part numbers are not explicitly confirmed in the provided documentation. Verify compatibility with alternative single-channel op-amps offering similar ground-sense features and SSOP-5 packaging through direct manufacturer cross-reference tools.