BU7261G-TR

Overview

The BU7261G-TR is a single-channel CMOS operational amplifier manufactured by ROHM Semiconductor. It operates within a supply voltage range of +1.8V to +5.5V and features input-output full swing capabilities. Key electrical parameters include a gain-bandwidth product of 2 MHz, a typical slew rate of 1.1 V/µs, and an input bias current of 1 pA. The device draws a typical circuit current of 0.25 mA per channel and offers a high DC voltage gain of 95 dB with a common-mode rejection ratio of 60 dB.

Feature Summary

• Supports low-voltage operation from +1.8V to +5.5V on a single power supply.
• Enables full-amplitude input and output signal swings.
• Features extremely low input bias current for high-impedance applications.
• Includes built-in phase compensation capacitors to simplify circuit design.

Applications

• Portable electronic devices requiring low-power amplification
• Battery-operated instrumentation systems
• Signal conditioning circuits in consumer electronics

Procurement Notes

Verify the specific suffix 'G-TR' against the manufacturer's official datasheet to confirm the SSOP-5 package and tape-and-reel packaging configuration. Ensure that the component meets the required operating temperature range of -40°C to +105°C for your specific application environment. Confirm RoHS compliance status through the latest documentation provided by ROHM Semiconductor before finalizing procurement.

Selection Notes

Select this component when designing circuits that require full-swing input and output capabilities under low-voltage conditions. The high DC voltage gain and low input bias current make it suitable for precision applications where signal integrity is critical. Consider the 2 MHz bandwidth and 1.1 V/µs slew rate to ensure adequate performance for the intended signal frequencies and transient responses.

Part Context

The BU7261G-TR belongs to the BU726x series of low-voltage CMOS operational amplifiers from ROHM Semiconductor. This family is characterized by integrated phase compensation capacitors and full-signal swing capabilities, designed specifically for portable and battery-driven equipment. The device represents a standard-grade solution for general-purpose analog signal processing in compact form factors.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult the manufacturer's official documentation for recommended alternatives or cross-reference options based on specific pinout and electrical parameter compatibility requirements.

FAQ

Does the BU7261G-TR support rail-to-rail operation?

Yes, the device supports full-amplitude input and output swings, allowing it to operate effectively across the entire supply voltage range.

What is the typical input bias current for this operational amplifier?

The typical input bias current is specified as 1 pA, which is exceptionally low for this class of CMOS operational amplifier.