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The Innosilicon Audio Codec is a 24-bit solution that supports both cap and capless outputs from mono up to 7.1 surround sound. Based off a Sigma-Delta noise-shaping technique with full path filters, the Codec is low power while providing 95dB SNR in DAC and 93dB SNR in ADC.
A self-contained solution, the ADC, DAC and power amplifier are all integrated to create a reliable solution that is both low in noise and small in size. . This impressive Audio Codec is suitable for applications in high end consumer, automotive, multimedia and many other digital audio systems.

 

KEY FEATURES:

  • Silicon proven in 14, 28, 40, 55, 65, 90 and 130nm  across SMIC, TSMC & Global Foundries
  • 24 bit DAC with 95dB SNR
  • 24 bit ADC with 93dB SNR
  • Supports cap or capless output with impedances from 16Ω to 32Ω with custom analog pads
  • Microphones can either be single ended or differential while the Automatic Level Control provides smooth audio recording
  • Contains no mixed signal circuitry for a smaller solution with simple, but flexible, integration
  • Uses core voltage for the Codec and IO voltage for the IO. No special power requirements
  • Small die size (28nm) 0.5mm2 for ADC or DAC path, 1.62mm2 for complete stereo Codec
  • Low power (28nm) 6mW for stereo playback, 7mW for stereo recording and <5μA in standby
  • Mono, Stereo, 5.1 and 7.1 surround sound support
  • Programmable input and output analog gains
  • Integrated digital interpolation & decimation filters
  • Sampling rate support for: 8, 12, 16, 24, 32, 44.1, 48 and 96kHz
  • A fractional PLL supporting 6MHz to 20MHz input reference clocks is an available option

BLOCK DIAGRAM:

Audio Codec

INNOSILICON ADVANTAGES:

  • Low power consumption
  • Fully customizable
  • Small area
  • Simple integration process
  • Available options include:
    • FPGA integration support
    • Chip level integration

EXAMPLE APPLICATIONS:

  • Home theatre/stereo
  • Music player/cell phone record/playback
  • High end speakers
  • DVD/Set-top box TV
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