WM8961
Pre-Production
DAC FILTER RESPONSES
This series of plots shows the filter response for the entire DAC channel for different signal rates. The
full path, has a nominal gain of 3.01dB (1V input, 1.414V output), this means that the highest nodes in
the 48kHz case are at 47.5dB (rather than below the 50dB specification).
Sample Rate (kHz)
Sloping Stop-band
MCLK recommended rate for DAC only
playback (CODEC mode) (Hz)
8
11.025
12
Yes
Yes
Yes
Yes
Yes
Yes
No
3072000 (3072000)
2822400 (2822400)
3072000 (3072000)
2048000 (6144000)
2822400 (5644800)
3072000 (6144000)
2048000 (8192000)
2822400 (11289600)
3072000 (12288000)
16
22.05
24
32
44.1
48
No
No
Table 67 Recommended Filter Configurations for Supported Sample Rates
Figure 44 DAC Filter Response 8k Sampling Rate
Figure 45 DAC Filter Response for 11.025k Sample Rate
Figure 46 DAC Filter Response for 12k Sample Rate
Figure 47 DAC Filter Response for 16k Sample Rate
PP, August 2009, Rev 3.1
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
