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. Main and secondary modes are available and de-emphasis is also supported.
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Technology
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 |
