Production Data
WM8912
POWER CONSUMPTION MEASUREMENTS
Stereo Playback to Headphones - DAC input to HPOUTL+HPOUTR pins with 30Ω load.
Test conditions:
VMID_RES = 01 (for normal operation)
CP_DYN_PWR = 1 (Class-W, Charge pump controlled by real-time audio level)
Variant test conditions
AVDD
DCVDD
DBVDD
CPVDD
TOTAL
mW
V
mA
1.69
1.69
1.71
V
mA
0.76
0.18
0.77
V
mA
0.00
0.00
0.00
V
mA
0.31
0.31
1.99
48kHz sample rate
8kHz sample rate
1.80
1.80
1.80
1.00
1.00
1.00
1.80
1.80
1.80
1.80
1.80
1.80
4.38
3.80
48kHz, Po = 0.1mW/channel
1kHz sine wave 0dBFS
7.45
HPOUT_VOL= -25dB
DAC_VOL= 0dB
48kHz, Po = 1mW/channel
1kHz sine wave 0dBFS
1.80
1.73
1.00
0.77
1.80
0.00
1.80
5.61
13.99
HPOUT_VOL= -15dB
DAC_VOL= 0dB
48kHz sample rate, Master mode,
1.80
1.80
1.82
1.83
1.00
1.00
1.05
0.94
1.80
1.80
0.73
0.76
1.80
1.80
0.30
0.29
6.18
6.14
FLL enabled, MCLK input frequency =
13MHz
48kHz sample rate, Master mode,
FLL enabled, MCLK input frequency =
32.768kHz
Stereo Playback to Line-out - DAC input to LINEOUTL+LINEOUTR or HPOUTL+HPOUTR pins with 10kΩ / 50pF load
Test conditions :
VMID_RES = 01 (for normal operation)
CP_DYN_PWR = 1 (Class-W, Charge pump controlled by real-time audio level)
Variant test conditions
AVDD
mA
DCVDD
mA
DBVDD
CPVDD
TOTAL
mW
V
V
1
1
1
V
mA
0.00
0.00
0.00
V
mA
0.36
0.36
2.27
48kHz sample rate
1.8
1.8
1.8
1.67
1.67
1.78
0.76
0.18
0.77
1.8
1.8
1.8
1.8
1.8
1.8
4.43
8kHz sample rate
3.86
48kHz, Po = 0dBFS 1kHz sine wave
8.09
Off
Note: DC servo calibration is retained in this state as long as DCVDD is supplied. This allows fast, pop suppressed start-up from
the off state.
Variant test conditions
AVDD
mA
DCVDD
mA
DBVDD
CPVDD
TOTAL
mW
V
V
V
mA
V
mA
Off (default settings)
No Clocks applied
Off (default settings)
1.8
0.01
1
0.00
1.8
0.00
1.8
0.01
0.04
1.8
0.01
1
0.02
1.8
0.00
1.8
0.01
0.06
DACDAT, MCLK, BCLK, and LRCLK
applied
PD, Rev 4.0, September 2010
13
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
