BU7464SF-E2

Overview

The BU7464SF-E2 is a high-speed, ground-sense operational amplifier manufactured by ROHM Semiconductor. It features four voltage-feedback channels in a single SOP-14 package. Key electrical parameters include a maximum input offset voltage of 6000 µV and a nominal common-mode rejection ratio of 60 dB. The device operates within a supply voltage range of 1.7 V to 5.5 V and supports an operating temperature range from -40 °C to +105 °C. It incorporates built-in phase compensation capacitors for stability.

Feature Summary

• Ground sense input capability allowing signal detection near the negative rail
• Full output swing operation extending close to both supply rails
• Integrated phase compensation capacitors eliminating external components
• Low bias current characteristics suitable for precision applications

Applications

• Single-supply sensor interface circuits requiring ground-referenced inputs
• Battery-powered portable devices utilizing low-voltage operation
• Signal conditioning stages in industrial control systems
• Audio pre-amplification where low distortion is required
• Data acquisition systems with differential input requirements

Procurement Notes

Verify the specific suffix E2 against the official ROHM datasheet to confirm compliance with RoHS directives and lead-free manufacturing standards. Ensure the SOP-14 package dimensions match the design footprint requirements. Confirm that the 6000 µV maximum input offset voltage meets the system accuracy specifications before finalizing procurement.

Selection Notes

Select this component when ground-sense input is mandatory alongside full output swing in a low-voltage environment. Compare the 6000 µV input offset voltage against stricter requirements; if lower offset is needed, consider other series members. Verify that the 60 dB CMRR is sufficient for the noise environment. Ensure the 1.7 V minimum supply voltage aligns with the available power rails.

Part Context

This part belongs to the BU746xSF family of low-voltage CMOS operational amplifiers. The family includes variants with different channel counts and speed grades, such as the BU7462SF-E2 (two channels) and BU7487F-E2 (high-speed four channels). All share the ground-sense architecture and full-swing output characteristics designed for single-supply applications.

Replacement Considerations

Official substitutes within the same family include the BU7462SF-E2 for dual-channel applications. Cross-family replacements require careful verification of pin compatibility and electrical parameter alignment, particularly regarding input offset voltage and common-mode rejection ratios.

FAQ

What is the input voltage range for the BU7464SF-E2?

The input voltage range extends from the negative supply rail (Vss) up to Vdd minus 1.2 V, enabling ground-sense operation.

Does the BU7464SF-E2 require external frequency compensation?

No, the device integrates phase compensation capacitors on-chip, eliminating the need for external compensation components.

What is the typical output voltage swing capability?

The output can swing fully from Vss plus 0.1 V to Vdd minus 0.1 V, providing near-rail-to-rail performance.