AK4137EQ Digital Sample Rate Converter

By AKM Semiconductor Inc 64

AK4137EQ Digital Sample Rate Converter

AKM's AK4137EQ is a 2-channel digital sample rate converter (SRC) with an internal oscillator, input sample rate ranges from 8 kHz to 768 kHz, and output sample rate ranges from 8 kHz to 768 kHz. It is suitable for the application interfacing to different sample rates such as high-end audio systems and USB-DACs and is capable of play backing various audio formats with PCM-DSD data conversion function.

Features
  • 2 channels input/output
  • Asynchronous sample rate converter
  • PCM
    • Input sample rate range (FSI): 8 kHz to 768 kHz
    • Output sample rate range (FSO): 8 kHz to 768 kHz
  • DSD
    • Input sample rate range (FSI): 2.8224 MHz to 11.2896 MHz
    • Output sample rate range (FSO): 2.8224 MHz to 11.2896 MHz
  • Input to output sample rate ratio: FSO/FSI = 1/6 to 24
  • THD+N: up to -150 dB
  • Dynamic range: 188 dB (A-weighted)
  • I/F format: MSB justified, LSB justified, I2S compatible and TDM
  • PCM/DSD converter
  • Dop I/F
  • Oscillator for internal operation clock
  • Clock for master mode: 64/128/192/256/384/512/768 fso
  • On-chip X’tal oscillator
  • Digital de-emphasis filter (32 kHz, 44.1 kHz, 48 kHz)
  • Soft mute function
  • SRC bypass mode (master/slave, PCM, DSD)
Applications    
  • Network audio focusing sound quality
  • SACD players
 
  • High-end audio systems
  • Car infotainment systems 

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AK4137EQ

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