Reduction of silicon area by 40 % on the new audio codecs targeting wireless devices

Jun 29, 2015

Reduction of silicon area by 40 % on the new audio codecs targeting wireless devices

Dolphin Integration is proud to roll out sCODa-MT1-LR.01, a stereo audio CODEC supporting both analog and digital microphones. With its architecture, this audio Virtual Component of Silicon IP is the perfect candidate for SoCs targeting wireless audio devices, such as Bluetooth speakers or sound bars, where sound performance and die cost are pivotal.

This product leverages the high density of a pure logic PMW modulator (40 % area reduction at 65 nm compared to a mixed-signal CODEC) with the advantage of the high dynamic range of a mixed-signal ADC.
Indeed, its ultra-low silicon area, close to one square millimeter, contributes to positioning the sCODa-MT1-LR.01 as the leading converter for cost-effectiveness.


Our sCODa-MT1-LR.01 stars a unique configuration of features:

  • One ADC channel with analog microphone circuitry
  • One digital microphone input channel
  • Automatic Gain Control (AGC) preventing audio signal saturation on the microphone input
  • Wind noise filters to reduce environment disturbances and to enhance voice quality
  • PLL-less feature (Phase Lock Loop) protecting audio signals against any performance drop due to jittered clock issues
  • 2 DAC channels (R/L) with Pulse Width Modulation (PWM) for speaker or headphone outputs

This product is delivered with a handbook of external schematics easing the selection of external components while targeting a large range of output types (e.g headphone, speaker, line-out) and performances. This provides ideal guidelines for helping users optimize the cost/performance trade-offs with confidence in well-proven results.


Performance highlights

  • Low silicon area using a pure logic PWM DAC
  • High SNR
    • Up to 105 dB A-weighted on the DAC (depending on the sound amplifier)
    • 90 dB A-weighted on ADC
  • THD
    • 90 dB on DAC
    • 80 dB on ADC
  • Wide sampling frequency range: 8 kHz to 192 kHz


The product is available at 65 nm TSMC, but easily retargetable from 130 nm to 28 nm at leading foundry processes.
For further information on sCODa-MT1-LR.01, check its presentation or contact us at converters@dolphin-ip.com.

As a complement, the low-noise regulator Charny is provided to supply the IO drivers: nLR-Charny-[1.62-3.63]-[1.25].01

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