The CS4271 is a highly integrated audio codec that utilizes a single-ended input and differential output architecture to deliver high analog performance and to maximize system flexibility with an on-chip oscillator, output volume control with soft ramp and zero crossing, selectable digital filter response, and integrated level shifters for direct interface to logic levels from 2.5 V to 5 V. The on-chip oscillator eliminates the need for an external crystal oscillator circuit, thereby reducing overall design cost and conserving circuit board space. The CS4271 automatically uses the on-chip oscillator in the absence of an applied main clock, simplifying system design.



Mono/Stereo Codecs


  • Complete stereo codec
  • 24-bit conversion
  • System sampling rates up to 192 kHz
  • 108 dB A/D converter dynamic range
  • 114 dB D/A converter dynamic range
  • -98 dB A/D converter/-105 dB D/A converter THD+N
  • Output digital volume control with soft ramp
  • Low-latency digital filter
  • Selectable digital filter response
  • High-pass filter or DC offset calibration
  • Single-ended input architecture
  • Differential output architecture
  • On-chip oscillator
  • Supports main or secondary mode operations
  • 5 V analog power supply
  • 3.3 V or 5 V digital power supply
  • Supports direct interface to logic levels from 2.5 V to 5.0 V
  • Footprint-compatible with the CS4272
  • Package: 28-pin TSSOP; lead-free assembly
  • Consumer and automotive D-grade availability

Parametric Specifications

Channels In 2
Channels Out 2
DAC THD+N (dB) -100
ADC THD+N (dB) -98
Analog Power Supply (V) 5
Digital Power Supply (V) 3.3-5
Logic Power Supply (V) 2.5-5
Operational Power Consumption (mW) 738
Package 28 TSSOP

Technical Documents

CS4271 Product Data Sheet

Oct 1, 2021, DS592F2 : 1.1 Mb

CS4271/72 Product Bulletin

Mar 1, 2003, 0092-0303-PB-ADP : 605 Kb

Software and Tools

CS4272 IBIS Model

Jan 26, 2006, (1.8V, 2.5V, 3.3V, 5.0V) : 80 Kb


Comprehensive Solutions