WM8912
Production Data
OUTPUT SIGNAL PATH
Stereo Playback to Headphones - DAC input to HPOUTL+HPOUTR pins with 15Ω load
Test conditions: HPOUTL_VOL = HPOUTR_VOL = 111001b (0dB)
PARAMETER
SYMBOL
TEST CONDITIONS
1% THD
MIN
TYP
28
MAX
UNIT
mW
Output Power (per Channel)
Po
RLoad= 30Ω
0.92
-0.76
32
Vrms
dBV
mW
1% THD
RLoad= 15Ω
0.69
-3.19
Vrms
dBV
DC Offset
DC servo enabled,
calibration complete.
-1.5
90
+1.5
-80
mV
dB
Signal to Noise Ratio
SNR
A-weighted
96
-91
-84
-87
-85
100
90
Total Harmonic Distortion + Noise
THD+N
RL=30Ω; Po=2mW
RL=30Ω; Po=20mW
RL=15Ω; Po=2mW
RL=15Ω; Po=20mW
1kHz signal, 0dBFS
10kHz signal, 0dBFS
1kHz signal, 0dBFS
217Hz, 100mVpk-pk
1kHz, 100mV pk-pk
dB
Channel Separation
dB
dB
dB
Channel Level Matching
+/-1
75
Power Supply Rejection Ratio
PSRR
70
Stereo Playback to Line-out - DAC input to LINEOUTL+LINEOUTR pins with 10kΩ / 50pF load
Test conditions: LINEOUTL_VOL = LINEOUTR_VOL = 111001b (0dB)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
1.0
0
MAX
UNIT
Vrms
dBV
Full Scale Output Signal Level
DAC 0dBFS output at
0dB volume
2.83
Vpk-pk
mV
DC offset
DC servo enabled.
Calibration complete.
A-weighted
-1.5
90
+1.5
-70
Signal to Noise Ratio
SNR
96
-85
100
90
dB
dB
Total Harmonic Distortion + Noise
Channel Separation
THD+N
10kΩ load
1kHz signal, 0dBFS
10kHz signal, 0dBFS
1kHz signal, 0dBFS
217Hz, 100mVpk-pk
1kHz, 100mV pk-pk
dB
dB
dB
Channel Level Matching
+/-1
62
Power Supply Rejection Ratio
PSRR
62
Output PGAs (HP, LINE)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
dB
Minimum PGA gain setting
Maximum PGA gain setting
PGA Gain Step Size
PGA gain accuracy
PGA gain accuracy
Mute attenuation
-57
6
dB
1
dB
+6dB to -40dB
-40dB to -57dB
HPOUTL/R
-1.5
-1
+1.5
+1
dB
dB
85
85
dB
LINEOUTL/R
dB
PD, Rev 4.0, September 2010
10
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
