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SIA8000

The SIA8000 is a high-efficiency Class-D audio amplifier with differential analog inputs, an integrated adaptive charge pump multiplier, and a controllable single-stage OPC. The SIA8000 supports applications in mobile phones, tablets, personal electronic devices, building/home automation, and more.

The charge pump converter can double the battery voltage to a maximum of 8V, thereby providing 2.8W of output power to an 8Ω speaker.

Speaker safety is ensured by SI’s patented speaker protection architecture, which can be implemented with an on-chip protection controller or with the Sound Intelligence™ speaker protection and audio enhancement software suite running in the host, creating the industry’s first analog input intelligent audio amplifier.

The SIA8000 features a Single Wire Interface (OWI), allowing the device to operate independently or in conjunction with the Sound Intelligence™ audio algorithms running in a host system. The chip is housed in an ultra-compact 4mm² FCQFN package with a 15-pin 0.4mm pitch, making this solution the industry's smallest high-voltage intelligent audio amplifier. The product operates over a wide temperature range of -40°C to +85°C.

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Product Features

  • Adaptive charge pump voltage doubler converter

  • Overall efficiency exceeds 83%.

  • The signal-to-noise ratio of the 8Ω speaker at 1W power is 101dB.

  • High PSRR at 217Hz

    75dB in SPK mode, VDD=4.2V

    82dB in RCV mode, VDD=4.2V

  • High output power when THD+N=1%

    2.8W@8Ω

    3.2W@6Ω

  • In-chip OPC control

  • Supports speaker and earpiece combo applications

  • Single-ended/differential analog input interface

  • 17 single-wire pulse control modes

  • Small 15-pin FCQFN package

Application scenarios

Application diagram

Sample application

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