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SD7402 - Three-Channel Audio Amplifier

General Description

SD7402 is a 3-channel audio amplifier with built-in microphone input amplifier.

High quality audio output is available through simple peripheral circuit and the amplifier gain can be adjusted flexibly by external resistor.

Key Features

  • BICMOS technology.
  • Dual power supply (+5V/-12V).
  • Built-in voltage regulator.
  • Low distortion.
  • Standby function.
  • Mute function and ON/OFF POP noise suppression.
  • CD/VCD/DVD.
  • Other audio systems.

📥 Download Datasheet

Datasheet Details

Part number SD7402
Manufacturer Silan Microelectronics
File Size 392.01 KB
Description Three-Channel Audio Amplifier
Datasheet download datasheet SD7402 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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THREE-CHANNEL AUDIO AMPLIFIER DESCRIPTION SD7402 is a 3-channel audio amplifier with built-in microphone input amplifier. High quality audio output is available through simple peripheral circuit and the amplifier gain can be adjusted flexibly by external resistor. Its audio output signal-noise ratio is 85dB, total harmonic distortion is 0.05% and the channel separation is 78dB. Based on BICMOS technology, SD7402 can stably work in +5V/12V system with built-in voltage regulator. The built-in filter can improve the audio quality by attenuating the other signals. The mute and ON/OFF POP suppression functions can suppress the POP noise in the input signal. It is widely used as pre-amplification in various stereo and 2.1channel audio systems to pre-amplify the signal from the main chip audio.