BU7487SFV-E2

Overview

The BU7487SFV-E2 is a four-channel ground sense high-speed low voltage CMOS operational amplifier manufactured by ROHM Semiconductor. It operates within a supply voltage range of 3 V to 5.5 V, featuring a gain-bandwidth product of 10 MHz and a slew rate of 10 V/µs. The device exhibits an input offset voltage of 1 mV and an input bias current of 1 pA. It delivers an output current of 8 mA per channel with a common-mode rejection ratio of 45 dB. Packaged in an SSOP-14 format, it supports operating temperatures from -40°C to +105°C.

Feature Summary

• Ground sense input capability allowing operation down to the negative supply rail
• High-speed performance with wide bandwidth and fast slew rate for signal integrity
• Low voltage operation suitable for portable battery-powered applications
• Ultra-low input bias current minimizing loading effects on high-impedance sources

Applications

• Portable electronic devices requiring low power consumption and small form factor
• Sensor interface circuits where ground-referenced signals are prevalent
• Battery-operated instrumentation utilizing single-supply configurations
• Signal conditioning stages in consumer electronics and medical devices

Procurement Notes

Verify the specific suffix E2 against the official ROHM datasheet to confirm RoHS compliance and lead-free status. Ensure the SSOP-14 package dimensions match your PCB footprint requirements. Confirm that the operating temperature range meets your environmental specifications before finalizing procurement.

Selection Notes

Select this component when ground-sense input is required alongside high-speed amplification in low-voltage systems. Compare the 10 MHz bandwidth and 10 V/µs slew rate against application signal frequencies. Consider the 1 pA input bias current for high-impedance sensor interfaces. Evaluate the 8 mA output drive capability against load requirements.

Part Context

This part belongs to the BU748x series of CMOS operational amplifiers designed for ground-sense applications. It complements other variants like the BU7486SFV-E2, which offers two channels in an 8-pin package. The series emphasizes low voltage operation and high speed, targeting modern portable electronics where power efficiency and signal fidelity are critical design constraints.

Replacement Considerations

Official substitutes include the BU7487FV-E2. Verify pin compatibility and electrical parameter equivalence with the manufacturer's documentation before substitution. Ensure the alternative maintains the same ground-sense input capability and package outline for direct replacement.

FAQ

What is the input voltage range for the BU7487SFV-E2?

The input voltage range extends from VSS (ground) to VDD minus 1.4 V, enabling ground-sense operation.

Does the BU7487SFV-E2 have a shutdown function?

No, the BU7487SFV-E2 does not include a shutdown feature; it operates continuously within its specified temperature range.