Audio DSPs with Mixed-Signal Integrated

The CS470xx family is a new generation of audio system-on-a chip (ASOC) processors targeted at high fidelity, cost sensitive designs. Starting with the single-core 32-bit audio DSP engine, the CS470xx family further simplifies system design and reduces total system cost by integrating the S/PDIF Rx, 2 S/PDIF Tx, dual stereo analog inputs – one with 5:1 stereo input mux, up to 8 analog outputs, and up to 20 channels of hardware SRCs to simplify system design. This integration effectively reduces an equivalent system chip count (using the CS47048 device) from 16 to 1 which clearly allows for much smaller, less expensive board designs.

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Smart Codecs, Audio DSPs


  • Cost-effective, high-performance 32-bit DSP
  • Integrated DAC & ADC functionality
  • Configurable serial audio inputs/outputs
  • Supports different Fs sample rates
  • DSP tool set w/ private keys protect customer IP
  • Integrated clock manager/PLL
  • Input Fs auto detection w/ µC acknowledgement
  • Host & boot via SPI / I²C serial interface
  • Configurable GPIOs and external interrupt input
  • 1.8V core and a 3.3V I/O that is tolerant to 5V input
  • Low power mode: 620µW

Parametric Specifications

DACs 4 (CS47024)
8 (CS47028)
8 (CS47048)
ADCs 2 (CS47024)
2 (CS47028)
4 (CS47048)
DAC Dynamic Range (dB) 108
ADC Dynamic Range (dB) 105
DAC THD+N (dB) -98
ADC THD+N (dB) -98
Sample Rate (kHz) 0-192
Analog Power Supply (V) 3.3
Digital Power Supply (V) 1.8
Power Consumption (mW) 1.7-1025
Package 100 LQFP


Comprehensive Solutions