WM8750JL
Production Data
TYPICAL PERFORMANCE
POWER CONSUMPTION
The power consumption of the WM8750JL depends on the following factors.
Supply voltages: Reducing the supply voltages also reduces supply currents, and therefore results in significant power
savings, especially in the digital sections of the WM8750JL.
Oversampling rate: Significant power savings can be achieved by running the DAC and ADC at the lower over-sampling
rate of 64 (this is achieved by setting ADCOSR and DACOSR to ‘1’ in R24). Note all figures quoted here assume
ADCOSR=DACOSR=1.
Operating mode: Disabling parts of the WM8750JL that are not currently in use (e.g. mic pre-amps, unused outputs,
DAC, ADC, etc.) also saves power.
Control Register
R25 (19h)
R26 (1Ah)
R24 R23
Other settings
AVDD
DCVDD
DBVDD
HPVDD
Tot. Power
Bit
V
I (mA)
V
I (mA)
V
I (mA)
V
I (mA)
mW
OFF
00
10
01
01
01
01
01
01
01
01
01
01
01
01
0
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
0
1
1
1
1
1
1
0
0
0
0
0
1
0
0
1
1
1
1
1
1
0
0
0
0
0
1
0
0
1
1
1
1
1
0
1
0
0
0
0
0
0
0
1
1
1
1
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
0
0
1
0
0
0
0
0
0
0
1
0
1
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
11
01
00
11
01
00
11
01
00
11
01
00
11
01
00
11
01
00
Clocks stopped
3.3 0.000 3.3 0.010 3.3 0.000 3.3 0.000
2.5 0.000 2.5 0.008 2.5 0.000 2.5 0.000
1.8 0.000 1.5 0.007 1.8 0.000 1.8 0.000
3.3 0.360 3.3 0.011 3.3 0.000 3.3 0.000
2.5 0.268 2.5 0.009 2.5 0.000 2.5 0.000
1.8 0.183 1.5 0.007 1.8 0.000 1.8 0.000
3.3 2.457 3.3 4.687 3.3 0.250 3.3 0.683
2.5 1.814 2.5 2.779 2.5 0.178 2.5 0.670
1.8 1.606 1.5 1.483 1.8 0.122 1.8 0.406
3.3 2.456 3.3 4.649 3.3 0.250 3.3 0.709
2.5 1.814 2.5 2.758 2.5 0.178 2.5 0.682
1.8 1.606 1.5 1.483 1.8 0.122 1.8 0.410
3.3 2.456 3.3 5.454 3.3 0.250 3.3 1.929
2.5 1.814 2.5 3.354 2.5 0.178 2.5 1.927
1.8 1.607 1.5 1.831 1.8 0.122 1.8 1.793
0.0330
0.0200
0.0105
1.2243
0.6925
0.3399
26.6541
13.6025
6.0657
26.6112
13.5800
6.0729
33.2937
18.1825
9.0861
Standby
(500 KOhm VMID string)
Interface Stopped
Playback to Line-out
Playback to 32 Ohm Headphone
Playback to 32 Ohm Headphone
0.1mW / channel into load
(JEITA CP-2905B)
Playback to 32 Ohm Headphone
5mW / channel into load
3.3 2.470 3.3 5.469 3.3 0.250 3.3 11.248 64.1421
2.5 1.833 2.5 3.408 2.5 0.178 2.5 11.283 41.7550
1.8 1.635 1.5 1.862 1.8 0.122 1.8 10.974 25.7088
3.3 2.426 3.3 3.969 3.3 0.251 3.3 1.010
2.5 1.788 2.5 2.705 2.5 0.179 2.5 0.980
1.8 1.244 1.5 1.481 1.8 0.122 1.8 0.670
Playback to 32 Ohm Headphone
(capless mode using OUT3)
11 R24, OUT3SW=00
01
00
25.2648
14.1300
5.8863
29.0829
14.9600
6.8832
7.9728
3.9350
1.7493
8.4513
4.2975
1.9977
32.7162
18.3125
8.5467
26.7234
14.3300
6.0948
27.9279
14.9875
6.4158
52.0113
28.8100
12.8175
Playback to 8 Ohm BTL Speaker
11 R24, ROUT2INV=1 3.3 2.652 3.3 4.655 3.3 0.250 3.3 1.256
01
00
11
01
00
11
2.5 1.950 2.5 2.761 2.5 0.178 2.5 1.095
1.8 1.694 1.5 1.482 1.8 0.122 1.8 0.773
3.3 1.107 3.3 0.624 3.3 0.000 3.3 0.685
2.5 0.812 2.5 0.090 2.5 0.000 2.5 0.672
1.8 0.559 1.5 0.007 1.8 0.000 1.8 0.407
3.3 1.305 3.3 0.565 3.3 0.000 3.3 0.691
Headphone Amp
(line-in to 32 Ohm headphone)
Clocks Stopped
Speaker Amp
(line-in to 8 Ohm speaker)
Clocks Stopped
01 R24, ROUT2INV=1 2.5 0.948 2.5 0.092 2.5 0.000 2.5 0.679
00
11
01
00
1.8 0.649 1.5 0.007 1.8 0.000 1.8 0.455
3.3 4.631 3.3 5.010 3.3 0.273 3.3 0.000
2.5 3.892 2.5 3.237 2.5 0.196 2.5 0.000
1.8 3.239 1.5 1.649 1.8 0.135 1.8 0.000
Record from Line-in
Record from mono microphone
11 R32, LMICBOOST=11; 3.3 2.829 3.3 4.996 3.3 0.273 3.3 0.000
01
00
R23, DATSEL=01
2.5 2.330 2.5 3.208 2.5 0.194 2.5 0.000
1.8 1.892 1.5 1.632 1.8 0.134 1.8 0.000
Record from mono microphone
(differential)
11 R32, LMICBOOST=11; 3.3 3.197 3.3 4.993 3.3 0.273 3.3 0.000
01
00
11
01
00
R23, DATSEL=01;
R32, LINSEL=11
2.5 2.593 2.5 3.208 2.5 0.194 2.5 0.000
1.8 2.067 1.5 1.636 1.8 0.134 1.8 0.000
3.3 6.670 3.3 8.014 3.3 0.272 3.3 0.805
2.5 5.389 2.5 5.326 2.5 0.196 2.5 0.613
1.8 4.281 1.5 2.851 1.8 0.135 1.8 0.329
Stereo Record & Playback
Table 1 Supply Current Consumption
Notes:
1. All figures are at TA = +25oC, Slave Mode, fs = 48kHz, MCLK = 12.288 MHz (256fs), ADCOSR=DACOSR=1.
2. Unless otherwise noted, these measurements are quiescent (i.e. signal amplitude is zero).
PD, April 2012, Rev 4.1
8
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
