wm8941 Wolfson Microelectronics plc, wm8941 Datasheet - Page 12

• Manufacturer Part Number: wm8941
• Description: Mono Codec With Speaker Driver And Video Buffer
• Manufacturer: Wolfson Microelectronics plc

WM8941
Note: Power consumption figures include any power dissipated in the load (e.g. in the headphone or speaker)
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Typical current consumption for various scenarios is shown below.
Power OFF (No Clocks)
Sleep (VMID maintained, No Clocks)
Mono Record (MIC input, +20dB gain, 8kHz, quiescent)
SLAVE
Mono Record (MIC input, +20dB gain, 44.1kHz, PLL,
quiescent) MASTER
Mono 16Ω HP Playback (0.1mW, 1kHz sine wave, ac
coupled) SLAVE
Mono 8Ω BTL speaker Playback (44.1kHz, 200mW,
1kHz sine wave) SLAVE
Mono 8Ω BTL speaker Playback (44.1kHz, PLL,
quiescent) MASTER
Mono 8Ω BTL speaker Playback (44.1kHz, PLL,
quiescent) MASTER and Video Buffer (0dB gain,
unloaded, quiescent)
Mono 8Ω BTL speaker Playback (44.1kHz, 200mW,
1kHz sine wave) SLAVE and Video Buffer (1Vpp
Multiburst, AC coupled, Clamp Enabled, 0dB gain, 75Ω
load)
Mono 8Ω BTL speaker Playback (44.1kHz, 200mW,
1kHz sine wave) SLAVE and Video Buffer (0.5Vpp
Multiburst, AC coupled, Clamp enabled, +6dB gain,
75Ω load)
Table 1 Power Consumption
MODE
0.038
0.190
AVDD
(3V3)
4.1
5.3
2.8
2.8
3.9
3.9
2.8
2.8
MA
SPKVDD
62.0 *
62.0 *
62.0 *
(3V3)
1.5
1.5
1.5
MA
0
0
0
0
VBVDD
22.0
23.7
(3V3)
4.8
MA
0
0
0
0
0
0
0
PD, Rev 4.0, August 2008
DVDD
(1.8V)
0.3
2.1
1.6
1.6
1.9
1.9
1.6
1.6
MA
0
0
Production Data
216.8 *
289.3 *
294.9 *
POWER
0.125
0.627
TOTAL
14.2
21.1
17.1
21.2
36.9
(MW)
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