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CS4271

108/114 dB Stereo Codec
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CS4271 Overview

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.

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Product Features

  • 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

Analog Input TypeSingle-ended; Differential
Analog Output TypeSingle-ended; Differential
Channels In2
Channels Out2
Control InterfaceSPI/I²C
ADC Dynamic Range (dB)108
DAC Dynamic Range (dB)114
ADC THD+N (dB)-98
DAC THD+N (dB)-100
Sample Rate (kHz)4-192
Analog Power Supply (V)5
Digital Power Supply (V)3.3-5.0
Logic Power Supply (V)2.5-5
Operational Power Consumption (mW)738
Target MarketConsumer; Automotive
FeaturesVolume control, on-chip oscillator, serial audio port - master/slave
Package28 TSSOP

Design Resources

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Evaluation Boards

  • CS4271 Stereo Codec Evaluation Board (CDB4271)

    The CDB4271 demonstration board is an excellent means for evaluating the CS4271 stereo codec, providing single-ended analog I/O, CS8406/CS8416 S/PDIF transmit/receive, and Windows-based software control of the codec and board configuration via a parallel port interface.

    User Guide

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