100 dB, Variable Sample Rate D/A Converter with Charge Pump, Line Driver and Software Control

The WM8523 is a stereo digital/analog converter (DAC) with integral charge pump and software control interface to provide 2 VRMS line driver outputs using a single 3.3 V power supply rail. This IC features ground referenced outputs and the use of a DC servo to eliminate the use of line driving coupling capacitors as well as power on pops and clicks. The device is controlled and configured either via the I²C/SPI compliant serial control interface or a hardware control interface and supports audio sampling rates between 8 kHz and 192 kHz using all common MCLK/fs ratios. Master and Slave modes are available and de-emphasis is also supported.

Features

  • Digital volume control from -100 dB to +12 dB
  • I²C/SPI compatible and hardware control modes
  • Data formats: LJ, RJ, I²S, DSP
  • De-emphasis supported
  • Maximum 1 mV DC offset on line outputs

Parametric Specifications

Channel(s) Out 2
Resolution (bits) 24
Dynamic Range (dB) 104
THD+N (dB) -89 (THD)
Sample Rate (kHz) 8-192
Analog Power Supply (V) 3.3
Digital Power Supply (V)
Operational Power Consumption (mW) 35.64-46.2
Output Level (Vrms) 2.1
Package 20 TSSOP

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