105 dB Stereo Codec

The CS4270 is a stereo audio codec with single-ended inputs and outputs, and a dynamic range of 105 dB and THD+N of -95 dB. Requiring a minimal set of passive external components, the CS4270 provides designers with a simple solution that reduces the bill-of-materials cost and the required space on their printed circuit board. Configuring the IC through an industry standard control port provides access to additional features such as logarithmic digital volume control. The CS4270 utilizes Popguard® technology for controlling clicks and pops associated with power cycling, which eliminates external mute control circuitry.


Mono/Stereo Codecs


  • Complete stereo codec
  • 24-bit conversion
  • System sampling rates up to 216 kHz
  • Multibit Delta Sigma modulator architecture
  • 105 dB dynamic range (A-weighted)
  • -95 dB THD+N
  • Single-ended input/output architecture
  • Output digital volume control, 0.5 dB steps
  • Integrated level shifters for direct interface to logic levels from 1.8V to 5.0V
  • 3.3 or 5 V core power supply
  • Cirrus Logic Popguard technology
  • Available in 24-pin TSSOP package
  • Stand alone or control part functionality
  • Consumer and automotive D-grade availability

Parametric Specifications

Channels In 2
Channels Out 2
DAC THD+N (dB) -87
ADC THD+N (dB) -95
Analog Power Supply (V) 3.3-5
Supply Current (µA) 3.3-5
Logic Power Supply (V) 1.8-5
Package 24 TSSOP

Technical Documents

CS4270 Product Data Sheet

Aug 31, 2010, DS686F1 : 605 Kb

Errata: CS4270 Rev C Silicon

Aug 23, 2006, ER686B2 : 36 Kb

Errata: CS4270 Rev. B Silicon

Mar 28, 2006, ER686B1 : 44 Kb

Design Resources

CDB4270 Evaluation Board Data Sheet

Sep 8, 2006, DS686DB3 : 1704 Kb


Comprehensive Solutions