BA4558FVT-GE2

Overview

The BA4558FVT-GE2 is a dual operational amplifier manufactured by ROHM Semiconductor, designed for low-noise applications. It features two independent circuits within an 8-pin TSSOP surface-mount package. The device operates on a single supply voltage ranging from 8 V to 30 V, or dual supplies of ±4 V to ±15 V. Key electrical specifications include a gain-bandwidth product of 2 MHz, a slew rate of 1 V/µs, and an input bias current of 60 nA. It exhibits an input offset voltage of 500 µV and an input voltage noise density of 12 nV/√Hz. The unit draws 3 mA of supply current and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Low noise performance with 12 nV/√Hz input voltage noise density
• Wide operating power supply voltage range supporting single and dual configurations
• Integrated phase compensation capacitor eliminates external components
• Built-in electrostatic protection circuitry for enhanced reliability

Applications

• Audio preamplifier stages requiring low distortion
• Precision signal conditioning in measurement systems
• Active filter implementations in communication equipment

Procurement Notes

Verify the specific suffix GE2 against the manufacturer's latest documentation to confirm pinout compatibility and RoHS status. Confirm availability as the component may be subject to end-of-life notices. Ensure the TSSOP-8 footprint matches the target PCB design. Check for any recent production change notifications that might affect lead times or material composition.

Selection Notes

Select this component when low noise and wide supply voltage flexibility are required in a compact surface-mount form factor. Compare input offset voltage and bias current requirements against alternative dual op-amps if higher precision is needed. Consider the thermal characteristics of the TSSOP-8 package for high-density board layouts. Verify that the 2 MHz bandwidth meets the signal frequency requirements of the application.

Part Context

This part belongs to the BA4558 series of low-noise dual operational amplifiers produced by ROHM Semiconductor. The series is characterized by high gain and low distortion, making it suitable for audio and instrumentation applications. The FVT variant specifically denotes the TSSOP-8 packaging option, distinguishing it from SOP or MSOP versions within the same functional family.

Replacement Considerations

BA4558RF-E2: Similar low-noise dual op-amp in SOP-8 package. BA4558YF-MGE2: Alternative in MSOP-8 package with similar electrical characteristics.