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AK7841 - Monaural Audio Class-D Amp

General Description

The AK7841 is a Monaural Class-D amplifier for driving Piezo-Electric Speakers.

Its built-in power boost DCDC converter generates adequate high voltage for driving Piezo Speaker from a Li-Ion battery.

Key Features

  • Class-D Amplifier :.
  • Piezo-Electric Speaker Driver.
  • Analog Monaural signal input for both single and Differential-ended.
  • Monaural BTL output.
  • Output voltage = 12Vpp @VDD1=8.75V.
  • Filter-less solution.
  • Pop noise free architecture during power up or down.
  • Output short protection.
  • Boost DCDC Converter ：.
  • Input voltage = 2.7V ∼ 4.5V Æ Output voltage = 8.75V.
  • Over-current protection.
  • Over-volt.

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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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ASAHI KASEI [AK7841] www.DataSheet4U.com Monaural Audio Class-D Amp with Power Booster for PiezoSpeaker GENERAL DESCRIPTION The AK7841 is a Monaural Class-D amplifier for driving Piezo-Electric Speakers. Its built-in power boost DCDC converter generates adequate high voltage for driving Piezo Speaker from a Li-Ion battery. Output filter-less solution eliminates post LC-filters, which are normally required at Class-D outputs, and contributes to total space savings. Class-D operation ensures higher power efficiency. The AK7841 is the most appropriate for Cellular Phones with a piezo speaker. FEATURES □ Class-D Amplifier : • Piezo-Electric Speaker Driver • Analog Monaural signal input for both single and Differential-ended • Monaural BTL output • Output voltage = 12Vpp @VDD1=8.