WM8912 データシートの表示（PDF） - Wolfson Microelectronics plc
部品番号
コンポーネント説明
メーカー
WM8912
Wolfson Microelectronics plc
WM8912 Datasheet PDF : 128 Pages
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WM8912
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
MIN
Output Power (per Channel)
Po
1% THD
RLoad= 30Ω
1% THD
RLoad= 15Ω
DC Offset
Signal to Noise Ratio
Total Harmonic Distortion + Noise
Channel Separation
Channel Level Matching
Power Supply Rejection Ratio
SNR
THD+N
PSRR
DC servo enabled,
-1.5
calibration complete.
A-weighted
90
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
TYP
28
0.92
-0.76
32
0.69
-3.19
96
-91
-84
-87
-85
100
90
+/-1
75
70
Production Data
MAX
+1.5
UNIT
mW
Vrms
dBV
mW
Vrms
dBV
mV
dB
dB
-80
dB
dB
dB
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
Full Scale Output Signal Level
DAC 0dBFS output at
1.0
0dB volume
0
2.83
DC offset
DC servo enabled.
-1.5
Calibration complete.
Signal to Noise Ratio
SNR
A-weighted
90
96
Total Harmonic Distortion + Noise
THD+N
10kΩ load
-85
Channel Separation
1kHz signal, 0dBFS
100
10kHz signal, 0dBFS
90
Channel Level Matching
1kHz signal, 0dBFS
+/-1
Power Supply Rejection Ratio
PSRR
217Hz, 100mVpk-pk
62
1kHz, 100mV pk-pk
62
MAX
+1.5
UNIT
Vrms
dBV
Vpk-pk
mV
dB
-70
dB
dB
dB
dB
Output PGAs (HP, LINE)
PARAMETER
Minimum PGA gain setting
Maximum PGA gain setting
PGA Gain Step Size
PGA gain accuracy
PGA gain accuracy
Mute attenuation
TEST CONDITIONS
+6dB to -40dB
-40dB to -57dB
HPOUTL/R
LINEOUTL/R
MIN
TYP
MAX
UNIT
-57
dB
6
dB
1
dB
-1.5
+1.5
dB
-1
+1
dB
85
dB
85
dB
w
PD, Rev 4.0, September 2010
10
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