Release of the NL8902 dual-circuit JFET-input high-quality audio op-amp ~ A new standard for entry-level models! Audio op-amps that deliver high-quality sound on par with higher-end models ~ -Macnica

Launch of NL8902, a dual-circuit JFET-input high-quality audio operational amplifier

~A new standard for entry-level models! Audio op amps that deliver high-quality sound on par with that of higher-end models~

In recent years, while it has become easy to enjoy music using PCs and smartphones, there is also a growing demand for music to be played with higher sound quality. This product is a JFET input type audio op amp released to meet such needs.
While there are limited options for this type of op-amp on the market, this product applies the high-quality sound technology cultivated by Nisshinbo Micro Devices' original brand "MUSES" and offers an excellent balance of sound quality, characteristics, and price. It is available in a wide range of models, from entry-level to high-end.
In addition to high sound quality and the low input bias current and high slew rate that are the features of the JFET input type, it also achieves a well-balanced combination of noise and distortion characteristics that are important for audio characteristics.

-Low input bias current 10pA
-High slew rate 20V/μs
・Input equivalent noise voltage (noise characteristics) 10.0nV/√Hz (at f=1kHz)
Total harmonic distortion: 0.0004% (at f=1kHz)

In addition, it has high EMI resistance, phase inversion suppression, and unity gain stability, making it easy to improve the sound quality of audio equipment.

NL8902 (Left: EMP-8-AN Right: DFN4035-8-GR)

Features

JFET input type with an excellent balance of sound quality, characteristics, and price

The high-quality sound technology and excellent audio characteristics cultivated by Nisshinbo Micro Devices' original brand "MUSES" faithfully reproduce even the subtlest nuances of sound. The input section uses a JFET input type that is highly regarded for its sound quality. This product has achieved a high level of balance between sound quality, characteristics, and price through many years of experience in designing and producing high-quality audio amplifiers and continuous improvements.

Improved usability

It has high EMI resistance and is not easily affected by external noise, so it achieves clear and stable sound quality. In addition, it is designed not to cause phase inversion even when a voltage exceeding the common-mode input voltage range is input, so it can maintain stable output even if there is a sudden input fluctuation. In addition, it has unity gain stability and can be used for a wide range of circuit designs. It is easy to handle and can be used with confidence, so it is easy to improve development efficiency and high sound quality.

Equipped with a small, high heat dissipation package (DFN)

The use of a small, highly heat-dissipating DFN package allows mounting in limited spaces, miniaturizing devices and improving design freedom. Furthermore, the excellent heat dissipation characteristics enable stable operation even at high output, enabling highly reliable designs.

Application example

・PC audio, desktop audio
・Portable audio player
・Portable headphone amplifier
・Car audio
・Professional audio

Main specifications (please refer to the data sheet for details)

item	NL8902AN	NL8902GR
package	EMP-8-AN 3.9x5.0×1.65mm	DFN4035-8-GR 4.0×3.5×0.75mm
Number of circuits	2	←
Operating power supply voltage	±4V to ±16V	←
Equivalent input noise voltage	10.0nV/√Hz typ. at f=1kHz	←
Total harmonic low distortion	0.0004% typ. at f=1kHz	←
Gain Bandwidth Product	9MHz typ.	←
Slew Rate	20V/μs typ.	←
Input Bias Current	10pA typ.	←
EMI characteristics	EMIRR = 82dB(f = 1.8GHz)	←
Current consumption	2.6mA typ.	←
Unity Gain Stable	〇	←
JFET Input	〇	←
Bipolar Structure	〇	←