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NJR begins Mass Production of Audio Volume MUSES72323 with high performance and high quality sound

2020-04-09 | Return

New Japan Radio (NJR) launches an audio volume "MUSES72323" with high performance and high quality sound and claims it has entered mass production.

General Description
MUSES72323 is an audio volume of "MUSES" series with high performance and high quality sound.
It has high operating voltage up to ±18V, low distortion, low output noise and 0.25dB step control.
Employing external amplifiers will offer designer more flexible circuit design chance.
MUSES72323 is suitable for high-end audio equipment and professional audio equipment pursuing high performance and high quality sound

About MUSES
MUSES is a semiconductor device brand name of the audio products which pursued high quality sound.
MUSES is a unique original series of products produced based on the following concept.

1. Pursuit of high quality sound
2. Faithful pursuit of original sound without coloring, exaggeration and loss
3. Pursuit of the excellent sound shocking person's heart that cannot be shown in specification number.

Features

High quality sound
MUSES72323 is an audio volume flagship product developed based on the MUSES concept. We developed it taking advantage of the circuit technology, semiconductor process technology and assembly technology that have been cultivated in the MUSES series and repeating trial listening many times.

High performance
- High dynamic range with the operating voltage up to ±18V
- 0.25dB step adjustment
- Low noise, low distortion ※1
- Reduce the noise generated during volume adjustment combining zero cross detection circuit ※2 and soft step circuit ※3

Flexible design for high quality sound system
In order to configure high quality sound system freely, operational amplifier is used as external component, so flexible high quality sound design is possible.

Because the MUSES72323 is a semiconductor volume, the variation between channels can be reduced. In addition, if it is combined with the MUSES series amplifiers, higher quality sound system can be achieve

Characteristics

Part Number	MUSES72323
Number of Channels	2
Built-In Operational Amplifier	No
Operating Voltage Range (Analog/Digital)	±10 to ±18V +3.0 to +5.5V
Volume	0 to -111.75dB 0.25dB step, Mute
Gain^※4	+21 to 0dB 3dB step
Total Harmonic Distortion^※1	0.00024%
Output Noise Voltage^※1	-124dBV (0.63μVrms)
Zero Cross Detection Circuit^※2	√
Soft Step Circuit^※3	√
Control Format	3-wired serial control
Number of using chips on same bus line	4
Package	SSOP32 11mm x 7.6mm
Minimum Order Quantity	100pcs

※1 Confirm to the characteristics of the combined amplifiers. The table shows an example of low noise amplifier.
※2 Zero cross : this function reduces audible noise generated during gain adjustment changing the volume when the input signal is near GND (reference voltage).
※3 Soft step : this function reduces the zipper noise generated during gain adjustment changing the volume by smaller step.
※4 The gain can be adjusted by 0.25dB step with the volume control data.

Photo

Applications
High-end audio equipment
Professional audio equipment

Production Schedule
In mass production
Learn more about MUSES72323
MUSES72323 Data Sheet

Source: http://www.njr.com/