BU7442FVM-TR

Overview

The BU7442FVM-TR is a dual-channel, low-power ground-sense operational amplifier manufactured by ROHM Semiconductor. It operates on a single supply voltage ranging from 1.7 V to 5.5 V with a typical quiescent current of 50 µA per channel. The device features CMOS technology, offering an input bias current of 1 pA and an output swing that extends to the negative rail (Vss). Key electrical parameters include a gain-bandwidth product of 600 kHz, a slew rate of 300 mV/µs, and an input offset voltage of 1 mV. It is housed in an 8-pin MSOP package.

Feature Summary

• Ground-sense input capability allowing signal processing near the negative supply rail
• Full output amplitude swing extending to the negative supply voltage
• Ultra-low power consumption suitable for battery-operated applications
• CMOS construction ensuring minimal input bias current

Applications

• Low-voltage sensor signal conditioning circuits
• Portable consumer electronics requiring extended battery life
• Current sensing applications using shunt resistors at ground potential
• Battery management systems for mobile devices
• Industrial control interfaces operating on single low-voltage supplies

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. Confirm availability through authorized distributors as lead times may vary based on production schedules.

Selection Notes

Select this component when ground-referenced input signals are required within a low-voltage system. Compare the 600 kHz bandwidth and 300 mV/µs slew rate against application speed requirements. Consider the 1 pA input bias current for high-impedance source applications. Verify thermal performance within the -40°C to +85°C operating range.

Part Context

This part belongs to the BU7442 series of low-power operational amplifiers. It shares architectural similarities with other members like the BU7442F-E2 but differs in packaging and reel configuration. The series is designed for general-purpose analog signal processing where power efficiency and ground-sense operation are critical constraints.

Replacement Considerations

Official substitutes include variants such as the BU7442F-E2 for different packaging needs. Cross-reference with other ROHM ground-sense amplifiers if pin compatibility or specific electrical tolerances differ. Verify functional equivalence before replacing in existing designs.

FAQ

What is the minimum operating voltage for the BU7442FVM-TR?

The minimum operating supply voltage is 1.7 V.

Does the output swing reach the negative supply rail?

Yes, the output voltage range extends to Vss + 0.1 V, providing full amplitude swing near the negative rail.

What is the typical quiescent current per channel?

The typical circuit current is 0.05 mA (50 µA) per channel.