NJM4558

NJM4558 is a dual operational amplifier manufactured by New Japan Radio Co., Ltd. (NJR). It is designed for general-purpose amplification with a particular emphasis on low noise and good audio performance, making it a common choice in audio equipment and instrumentation.

The device consists of two identical op-amps enclosed in a single 8-pin package. It is valued for its stability, low distortion, and suitable noise characteristics for audio applications. The NJM4558 can be used in various configurations, including inverting and non-inverting amplifiers, active filters, and preamplifiers. It supports operation from dual supplies or from single-supply configurations with appropriate biasing and proper power decoupling.

Package options for the NJM4558 include standard through-hole DIP-8 and surface-mount variants such as SO-8, allowing adaptation to different circuit designs and manufacturing processes. The part is commonly found in consumer electronics, musical equipment, and laboratory instrumentation where compact, dual-op-amp solutions are desirable.

In comparison to other dual op-amps, the NJM4558 is frequently selected for its audio-oriented performance and availability from NJR. Designers often reference it when seeking a drop-in, dual high-performance amplifier for signal conditioning, tone control, and preamplification stages. For precise electrical specifications, recommended operating conditions, and thermal characteristics, the official NJR datasheet should be consulted.