Integrating isolation amplifiers and audio selector on one chip
makes possible space-saving of car audio

April 23, 2009

New Japan Radio Co., Ltd. announces the NJM2754, 4-input/1-output stereo audio selector with ground noise isolation amplifier

New Japan Radio Co., Ltd. announces the NJM2754, 4-input/1-output stereo audio selector with ground noise isolation amplifier. The ground noise isolation amplifier is suitable for rejection of common mode noise, which occurs between car-mounted audio equipment and external-connection equipments such as potable audio-devices.

[Background of development]

Recently, in car-audio market, due to the evolution of external-connection equipments such as CD changer, DVD player and portable digital audio player raises the demand for high quality sound. The ground noise isolation amplifier is suitable for achieving high quality sound with rejection of common mode noise between car-mounted audio equipment and external-connection devices.

[Features]

The NJM2754 consists of four stereo ground noise isolation amplifiers, 4-input / 1-output stereo audio selector and buffers. It makes possible 63.6% circuit board reduction in space by integrating isolation amplifiers and audio selector on one chip.The NJM2754 has high common mode noise reduction ratio (CMRR=60dB), superior channel separation (CS=110dB) and low noise (1.7µVrms typ.).

The NJM2754 is suitable for car-mounted audio equipment, due to high performance, space-efficiency and multiple input response.

  1. Capable of making space-saving of circuit board by integrating ground noise isolation amplifiers and audio selector into one chip.
  2. Capable of making high quality sound system by high noise rejection ratio.
  3. 105 degrees centigrade guaranteed product for automotive is available too.
Product Name NJM2754
Function 4-Input/1-Output Stereo Audio Selector With Ground Noise Isolation Amplifier
Applications Car Audio
Packaging SSOP20
NJM2754V

[Features and Characteristics]

[Schedule]

A detailed spec is here
NJM2754

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