PDM-to-PCM Bridge

DTI_PDM2PCM IP receives the 1-bit PDM signal from microphone and converts to 16-bit PCM with high Signal-to-Noise Ratio (SNR) and small distortion. DTI_PDM2PCM IP optimizes hardware usage to archive better power consumption and area.
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Features Design Status

DTI PDM2PCM Controller supports:

  • Single channel 1-bit PDM audio input from MEMS microphone with 1 to 3,072 kHz sampling rate, typically use 2,304 kHz
  • Single channel 16-bit PCM audio output with 20 to 64 kHz sampling rate, typically use 48 kHz
  • 48x Decimation ratio of PDM to PCM audio data
  • Automatic output sample rates change depends on manually configured input sample rate
  • 110 dB Signal to Noise Ratio
  • 0 ÷ 6 kHz output passband, 10 kHz output stopband
  • 89 dB stopband attenuation in typical condition (2,304 kHz input sample rate and 48 kHz output sample rate)

Data Sheets are available under NDA



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