98 dB, 96 kHz, Low Power, Stereo D/A Converter

The CS43L21 is a highly integrated, 24-bit, 96 kHz, low power stereo digital/analog converter (DAC) that allows infinite sample rate adjustments between 4 kHz and 96 kHz. The CS43L21 operates from a single, 1.8 V power supply to maximize battery life while minimizing end product form factors and delivering excellent audio performance with 46 mW of output power into 16 ohm headphones. By generating its own on-chip negative power supply voltage, the CS43L21 provides ground-centered outputs to eliminate costly, space-consuming DC blocking capacitors and reduce startup pops and clicks.


  • Headphone amplifier - GND centered
  • Digital signal processing engine
  • Beep generator
  • Low power operation
    • Stereo playback: 12.93 mW @ 1.8 V
  • Software mode (I²C & SPI™ control)

Parametric Specifications

Channel(s) Out 2
Resolution (bits) 24
Dynamic Range (dB) 98
THD+N (dB) -86
Sample Rate (kHz) 96
Analog Power Supply (V) 1.8-2.5
Supply Current (µA) 1.8-2.5
Output Level (Vrms) 1.3
Package 32 QFN

Technical Documents

CS43L21 Product Data Sheet

Jan 28, 2013, DS723F1 : 1014 Kb

Design Resources

CDB43L21 Evaluation Board Data Sheet

Feb 13, 2008, DS723DB1 : 1950 Kb


Comprehensive Solutions