Stereo Codecs with 3 V Interface

The CS4220 and CS4221 are highly integrated, high-performance, 24-bit audio codecs that provide stereo analog-to-digital (A/D) and stereo digital-to-analog (D/A) converters that use Delta-Sigma conversion techniques. Operating from a single 5 V power supply, the CS4220/21 devices are notable for their low power consumption. A selectable de-emphasis filter for 32 kHz, 44.1 kHz, and 48 kHz sample rates is also included. The CS4221 also includes an analog volume control capable of 113.5 dB attenuation in 0.5 dB steps. The analog volume control architecture preserves dynamic range during attenuation. Volume control changes are implemented using a “soft” ramping or zero-crossing technique. Applications include digital effects processors, DAT (digital audio tape), and multitrack recorders.


Mono/Stereo Codecs


  • 100 dB dynamic range A/D converters
  • 100 dB dynamic range D/A converters
  • 105 dB D/A converter signal-to-noise ratio (EIAJ)
  • Analog volume control (CS4221 only)
  • Differential inputs/outputs
  • On-chip anti-aliasing and output smoothing filters
  • De-emphasis for 32 kHz, 44.1 kHz, and 48 kHz
  • Supports master and slave modes
  • On-chip crystal oscillator
  • 3 V to 5 V digital interface
  • Single 5 V power supply
  • Package: 16-pin TSSOP

Parametric Specifications

Not Recommended for New Designs
Recommended Replacement: CS4270


Comprehensive Solutions