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SSM2518 - Class-D Audio Power Amplifier

General Description

The SSM2518 is a digital input, Class-D power amplifier that combines a digital-to-analog converter (DAC) and a sigma-delta (Σ-Δ) Class-D modulator.

This unique architecture enables extremely low real-world power consumption from digital audio sources with excellent audio performance.

Key Features

  • Filterless, digital input Class-D amplifier Serial digital audio interface supports common formats I2S, left justified, right justified, TDM1-16, and PCM 2 channels × 2 W into 4 Ω and 2 channels × 1.4 W into 8 Ω with 1% THD+N, when using a 5 V supply I2C control interface or standalone operation 91% efficiency at full scale into an 8 Ω load 97 dB signal-to-noise ratio (SNR), A-weighted 80 dB power supply rejection ratio (PSRR) at 217 Hz Digital volume control:.
  • 71.25 dB to +24 dB in 0.37.

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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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Datasheet Digital Input Stereo, 2 W, Class-D Audio Power Amplifier SSM2518 FEATURES Filterless, digital input Class-D amplifier Serial digital audio interface supports common formats I2S, left justified, right justified, TDM1-16, and PCM 2 channels × 2 W into 4 Ω and 2 channels × 1.4 W into 8 Ω with 1% THD+N, when using a 5 V supply I2C control interface or standalone operation 91% efficiency at full scale into an 8 Ω load 97 dB signal-to-noise ratio (SNR), A-weighted 80 dB power supply rejection ratio (PSRR) at 217 Hz Digital volume control: −71.25 dB to +24 dB in 0.375 dB steps Supports a wide range of sample rates from 8 kHz to 96 kHz Automatic sample rate detection Can operate using 64 × fS BCLK as the MCLK source 2.5 V to 5.5 V speaker supply voltage (PVDD) 1.62 V to 3.