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ON Semiconductor Class-D Audio Amplifier

ON Semiconductor’s ONA10IV is a 16W filterless Class D audio amplifier that provides improved audio amplification in battery-powered devices, as well as smart speakers and IoT devices.  The ONA10IV accepts digital audio input in PCM or PDM formats with sampling rates up to 96kHz.

It integrates ADCs to sense the speaker voltage and current and optimize the audio system based on the speaker’s frequency-dependent impedance.  Up to 8 amplifiers can share the digital audio interface, and the speaker offers fast automatic gain control with a dedicated bus that synchronizes AGC between devices.

The ONA10IV can be powered from a regulated 5.5V to 14V supply, but it also includes an LDO that allows direct connection to a 2- or 3-cell battery.

  • Digital audio interface:
    • Selectable PCM or PDM format
    • 16kHz to 96kHz audio sampling rates
  • Speaker Voltage & Current Sense
    • Up to 20 kHz Bandwidth
    • Dynamic range: 81dBA Voltage, 71dBA Current
  • Audio interface can be shared by up to 8 devices through I2C control
  • Fast Automatic Gain Control
    • Reacts within 10µs for brownout protection
    • Dedicated bus (MAGC) synchronizes AGC between multiple devices
  • PVDD Power Supply: 5.5V to 14V
  • Integrated LDO allows direct connection to 2S or 3S battery

More Information

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