LM4559FJ-GE2

Instrumentation, Op Amps, Buffer Amps Overview

The LM4559FJ-GE2 is a low noise operational amplifier manufactured by ROHM Semiconductor. It features two independent circuits housed in an SOP-J8 package, which corresponds to the SOIC-8 form factor with dimensions of 4.9x6.0 mm and a thickness of 1.65 mm. The device operates within a supply voltage range of 4 V to 18 V (+/- 2 V to +/- 9 V) and supports an operating temperature range from -40°C to +85°C. Key electrical specifications include a typical gain bandwidth product of 4 MHz, a slew rate of 3.5 V/µs, and an equivalent input noise voltage of 5 nV/√Hz. It exhibits a typical voltage gain of 110 dB and a common-mode rejection ratio of 100 dB.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• High voltage gain for precise signal amplification
• Low noise voltage characteristics for clean signal integrity
• Wide common-mode voltage range enhancing flexibility
• Low power consumption suitable for efficient designs

Instrumentation, Op Amps, Buffer Amps Applications

• Audio preamplifier stages requiring low distortion
• Precision sensor signal conditioning circuits
• Active filter implementations in measurement equipment
• Instrumentation amplifier front ends
• Battery-powered portable devices needing low current draw

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix and package variant against the official ROHM datasheet before procurement. Ensure the component status is confirmed as active or final sales for new designs. Check RoHS compliance documentation if required by your manufacturing standards. Confirm the lead time and availability directly with authorized distributors or the manufacturer, as stock levels fluctuate. Validate that the SOP-J8 package matches your PCB footprint requirements.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when low noise performance and high gain are critical alongside moderate speed requirements. Compare the 4 MHz gain bandwidth and 3.5 V/µs slew rate against application needs. Consider the 5 nV/√Hz input noise density for sensitive analog front ends. Evaluate the 1.65 mA/ch current consumption against power budget constraints. Ensure the 4 V to 18 V supply range fits the system architecture.

Instrumentation, Op Amps, Buffer Amps Part Context

The LM4559FJ-GE2 belongs to ROHM's low noise operational amplifier series. It is designed to offer superior noise performance compared to standard general-purpose op-amps while maintaining reasonable power efficiency. The device is part of a family that includes variants like the LM4559FVJ, differing primarily in package type. It targets applications where signal fidelity is paramount, such as audio and precision instrumentation.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Official substitute part numbers should be confirmed via ROHM documentation. Cross-reference parameters such as noise density, bandwidth, and package dimensions. Ensure compatibility with existing board layouts and thermal management strategies. Verify that any replacement maintains the same electrical characteristics and operating conditions.

Instrumentation, Op Amps, Buffer Amps FAQ

What is the typical input offset voltage maximum for the LM4559FJ-GE2?

The maximum input offset voltage is specified as 1.5 mV.

Does the LM4559FJ-GE2 support single-supply operation?

Yes, it can operate with a single supply voltage ranging from 4 V to 18 V, with an input voltage range of VSS+2.0 to VDD-2.0.

What is the package type for the LM4559FJ-GE2?

It is available in the SOP-J8 package, which is equivalent to the SOIC-8 form factor.