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WM9711 Datasheet(PDF) 11 Page - Wolfson Microelectronics plc

Part # WM9711
Description  LOW POWER AUDIO CODEC FOR PORTABLE APPLICATIONS
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM9711 Datasheet(HTML) 11 Page - Wolfson Microelectronics plc

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Production Data
WM9711L
w
PD Rev 4.1 April 2004
11
POWER CONSUMPTION
The power consumption of the WM9711L depends on the following factors.
Supply voltages: Reducing the supply voltages also reduces digital supply currents, and therefore results in significant
power savings especially in the digital sections of the WM9711L.
Operating mode: Significant power savings can be achieved by always disabling parts of the WM9711L that are not
used (e.g. audio ADC, DAC, AUXDAC, speaker driver, etc.)
Mode Description
26h 14:8
24h 15:0
Other Settings
Total Power
V
I (mA)
V
I (mA)
V
I (mA)
(mW)
OFF (lowest possible power)
1111111 0111111111111111 58h, SVD = 1
3.3
0.0005
3.3
0
3.3
0
0.00165
Clocks stopped
2.5
0.0004
2.5
0
2.5
0
0.001
1.8
0.0003
1.8
0
1.8
0
0.00054
LPS (Low Power Standby)
1111111 0111111111111111
3.3
0.005
3.3
0
3.3
0
0.0165
VREF maintained using 1MOhm string
2.5
0.004
2.5
0
2.5
0
0.01
1.8
0.003
1.8
0
1.8
0
0.0054
Standby Mode (ready to playback)
1110111 0111111111111111
3.3
0.56
3.3
0
3.3
0
1.848
VREF maintained using 50kOhm string
2.5
0.37
2.5
0
2.5
0
0.925
1.8
0.241
1.8
0
1.8
0
0.4338
"Idle" Mode
1100111 0111111111111111
3.3
1.1
3.3
0
3.3
0
3.63
VREF maintained using 50kOhm string
2.5
0.76
2.5
0
2.5
0
1.9
use LPS mode instead, if possible
1.8
0.508
1.8
0
1.8
0
0.9144
Phone Call - using headphone / ear speaker 0110011 0111100010101100 0Eh, bit 7 = 1
3.3
2.36
3.3
0
3.3
0
7.788
HPOUTL, HPOUTR and OUT3 active
(mic gain boost)
2.5
1.838
2.5
0
2.5
0
4.595
AC-Link stopped
1.8
1.218
1.8
0
1.8
0
2.1924
Phone Call - using loudspeaker
1110011 0111101100110100 0Eh, bit 7 = 1
3.3
2.385
3.3
0
3.3
0
7.8705
AC-Link stopped
(mic gain boost)
2.5
1.837
2.5
0
2.5
0
4.5925
1.8
1.218
1.8
0
1.8
0
2.1924
Record from mono microphone
1000110 0110101111111111 0Eh, bit 7 = 1
3.3
3.27
3.3
11.21
3.3
2.6
56.364
with MICBIAS
(mic gain boost)
2.5
2.66
2.5
7.78
2.5
2.13
31.425
all analogue outputs disabled
1.8
1.838
1.8
5.21
1.8
1.41
15.2244
Record phone call
0000000 0000000010001000 0Eh, bit 7 = 1
3.3
9.461
3.3
12.22
3.3
2.62
80.1933
both sides mixed to mono
(mic gain boost)
2.5
7.46
2.5
8.552
2.5
2.1
45.28
call using headphone / ear speaker
1.8
5.318
1.8
5.799
1.8
1.48
22.6746
DAC Playback - using loudspeaker
1000001 0001111101110111
3.3
3.45
3.3
9.884
3.3
2.6
52.5822
2.5
2.549
2.5
6.755
2.5
2.1
28.51
1.8
1.738
1.8
4.606
1.8
1.41
13.9572
DAC Playback - using headphone
0000001 0001110011101111
3.3
3.62
3.3
9.8
3.3
2.6
52.866
2.5
2.71
2.5
6.78
2.5
2.1
28.975
1.8
1.748
1.8
4.606
1.8
1.47
14.0832
DAC Playback - to Line-out
0000001 0001110011110111
3.3
3.62
3.3
9.8
3.3
2.6
52.866
2.5
2.71
2.5
6.78
2.5
2.1
28.975
1.8
1.748
1.8
4.606
1.8
1.41
13.9752
Maximum Power (everything on)
0000000 0000000000000000 0Eh, bit 7 = 1
3.3
9.593
3.3
12.26
3.3
2.62
80.7609
(mic gain boost)
2.5
7.37
2.5
8.563
2.5
2.12
45.1325
1.8
5.388
1.8
5.8
1.8
1.48
22.8024
AVDD
DCVDD
DBVDD
Table 1 Supply Current Consumption (Simulation)
Notes:
1.
All figures are at TA = +25
oC, audio sample rate fs = 48kHz, with zero signal (quiescent).
2.
The power dissipated in the headphone and speaker is not included in the above table.


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