BA4558RFJ-GE2

Overview

The BA4558RFJ-GE2 is a dual-channel low-noise operational amplifier manufactured by ROHM Semiconductor. It features a gain-bandwidth product of 2 MHz and a typical slew rate of 1 V/µs. The device operates on a supply voltage range from 8 V to 30 V, with a maximum dual supply of ±15 V. Key electrical specifications include an input offset voltage of 500 µV, an input bias current of 60 nA, and an equivalent input noise voltage density of 12 nV/√Hz. It provides a common-mode rejection ratio of 70 dB and functions within a temperature range of -40°C to +105°C.

Feature Summary

• Low noise performance suitable for sensitive signal processing applications
• Dual-channel configuration in a compact surface-mount package
• Wide operating supply voltage range supporting various power systems

Applications

• Audio preamplifier circuits requiring low distortion
• Industrial sensor signal conditioning
• General-purpose analog signal amplification

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix indicates the correct packaging format and RoHS compliance status. Check for end-of-life notices or production change notifications prior to finalizing procurement plans to ensure long-term availability.

Selection Notes

Select this component when low input noise voltage is critical for maintaining signal integrity in dual-channel designs. Ensure the required supply voltage falls within the 8 V to 30 V range. Consider the 8-SOP-J package dimensions for PCB layout compatibility and verify that the 1 V/µs slew rate meets the dynamic response requirements of the target application.

Part Context

This part belongs to the BA4558 series of low-noise operational amplifiers from ROHM Semiconductor. It is designed as a general-purpose dual op-amp with enhanced noise characteristics compared to standard bipolar amplifiers. The device is widely used in consumer electronics and industrial equipment where high-fidelity signal amplification is necessary.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.