Features: • 20-Bit Stereo DAC
• Audio Performance− 102dB SNR ('A' weighted at 48kHz)− -95dB THD
• Revision 1.03 or higher AC'97 AC-link interface support.
• 3.3V or mixed 3V digital, 5V analogue operation
• 20-Pin SSOP Package
• Minimal external component cost
• Support for surround and centre/LFE channelsApplication• Notebook PC
• PC sound cards
• Motherboards
• Custom sound applicationsPinout
Specifications
| CONDITION |
MIN |
MAX |
| Digital supply voltage |
-0.3V |
+7V |
| Analogue supply voltage |
-0.3V |
+7V |
| Voltage range digital inputs |
DVSS -0.3V |
DVDD +0.3V |
| Voltage range analogue inputs |
AVDD -0.3V |
AVDD +0.3V |
| Operating temperature range, TA |
0oC |
+70oC |
| Storage temperature prior to soldering |
30oC max / 85% RH max |
| Storage temperature after soldering |
-65oC |
+150oC |
| Package body temperature (soldering 10 seconds) |
|
+240oC |
| Package body temperature (soldering 2 minutes) |
|
+183oC |
DescriptionThe WM9709 is a low cost, high-quality stereo audio DAC.It utilises the Intel specified AC-link audio interface protocol,allowing a pair of audio output channels to be added to any AC link compliant controller device at minimal board area and external component cost.
The WM9709 device supports 48ks/s sample rates when operated at the normal AC link rate. The WM9709 supports a revision 1.03 AC '97 AC-link interface, the device acting as a master in normal operation.
The ID pin can be used to select which data slots on the AC-link are to be used as input to the DAC. This allows 3 x WM9709 to be used with a single controller that supports 6 channel sound, to output surround sound audio signals.When supporting surround, centre or LFE channels, the WM9709 behaves as a slave device.
The WM9709 device is footprint compatible with the WM9708 codec, allowing simple swapping between DAC and full codec features on the same board. The WM9709 is packaged in a 20-pin SSOP.
WM9709 Data Sheet
