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WM8912 Datasheet(PDF) 10 Page - Cirrus Logic

Part # WM8912
Description  Ultra Low Power DAC with Headphone Driver
PDF  129 Pages
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Manufacturer  CIRRUS [Cirrus Logic]
Direct Link  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

WM8912 Datasheet(HTML) 10 Page - Cirrus Logic

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WM8912
Production Data
w
PD, Rev 4.1, February 2013
10
OUTPUT SIGNAL PATH
Stereo Playback to Headphones - DAC input to HPOUTL+HPOUTR pins with 15
 load
Test conditions: HPOUTL_VOL = HPOUTR_VOL = 111001b (0dB)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Output Power (per Channel)
Po
1% THD
RLoad= 30
28
0.92
-0.76
mW
Vrms
dBV
1% THD
RLoad= 15
32
0.69
-3.19
mW
Vrms
dBV
DC Offset
DC servo enabled,
calibration complete.
-1.5
+1.5
mV
Signal to Noise Ratio
SNR
A-weighted
90
96
dB
Total Harmonic Distortion + Noise
THD+N
RL=30; Po=2mW
-91
dB
RL=30; Po=20mW
-84
RL=15; Po=2mW
-87
-80
RL=15; Po=20mW
-85
Channel Separation
1kHz signal, 0dBFS
100
dB
10kHz signal, 0dBFS
90
Channel Level Matching
1kHz signal, 0dBFS
+/-1
dB
Power Supply Rejection Ratio
PSRR
217Hz, 100mVpk-pk
75
dB
1kHz, 100mV pk-pk
70
Stereo Playback to Line-out - DAC input to LINEOUTL+LINEOUTR pins with 10k
 / 50pF load
Test conditions: LINEOUTL_VOL = LINEOUTR_VOL = 111001b (0dB)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Full Scale Output Signal Level
DAC 0dBFS output at
0dB volume
1.0
0
2.83
Vrms
dBV
Vpk-pk
DC offset
DC servo enabled.
Calibration complete.
-1.5
+1.5
mV
Signal to Noise Ratio
SNR
A-weighted
90
96
dB
Total Harmonic Distortion + Noise
THD+N
10k
 load
-85
-70
dB
Channel Separation
1kHz signal, 0dBFS
100
dB
10kHz signal, 0dBFS
90
Channel Level Matching
1kHz signal, 0dBFS
+/-1
dB
Power Supply Rejection Ratio
PSRR
217Hz, 100mVpk-pk
62
dB
1kHz, 100mV pk-pk
62
Output PGAs (HP, LINE)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Minimum PGA gain setting
-57
dB
Maximum PGA gain setting
6
dB
PGA Gain Step Size
1
dB
PGA gain accuracy
+6dB to -40dB
-1.5
+1.5
dB
PGA gain accuracy
-40dB to -57dB
-1
+1
dB
Mute attenuation
HPOUTL/R
85
dB
LINEOUTL/R
85
dB



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