wm8918 Wolfson Microelectronics plc, wm8918 Datasheet - Page 12

• Manufacturer Part Number: wm8918
• Description: Ultra Low Power Dac For Portable Audio Applications
• Manufacturer: Wolfson Microelectronics plc

WM8918
BYPASS PATH
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Stereo Playback to Line-out - DAC input to LINEOUTL+LINEOUTR pins with 10kΩ / 50pF load
Test conditions: LINEOUTL_VOL = LINEOUTR_VOL = 111001b (0dB)
Full Scale Output Signal Level
DC offset
Signal to Noise Ratio
Total Harmonic Distortion + Noise
Channel Separation
Channel Level Matching
Power Supply Rejection Ratio
Output PGAs (HP, LINE)
Minimum PGA gain setting
Maximum PGA gain setting
PGA Gain Step Size
PGA gain accuracy
Mute attenuation
Differential Stereo Line Input to Stereo Line Output- IN1L-IN2L / IN1R-IN2R pins to LINEOUTL+LINEOUTR pins with 10kΩ /
50pF load
Test conditions:
L_MODE = R_MODE = 01b (Differential Line)
LIN_VOL = RIN_VOL = 00101b (0dB)
LINEOUTL_VOL = LINEOUTR_VOL = 111001b (0dB)
Total signal path gain = 0dB
Full Scale Output Signal Level
Signal to Noise Ratio
Total Harmonic Distortion + Noise
Channel Separation
Channel Level Matching
Power Supply Rejection Ratio
PARAMETER
PARAMETER
PARAMETER
SYMBOL
THD+N
PSRR
SNR
TEST CONDITIONS
SYMBOL
-40dB to -57dB
+6dB to -40dB
THD+N
LINEOUTL/R
PSRR
HPOUTL/R
SNR
217Hz, 100mV pk-pk
TEST CONDITIONS
10kHz signal, -1dBV
1kHz signal, -1dBV
1kHz signal, -1dBV
-1dBV input
A-weighted
DAC 0dBFS output at
Calibration complete.
10kHz signal, 0dBFS
TEST CONDITIONS
217Hz, 100mVpk-pk
1kHz signal, 0dBFS
1kHz signal, 0dBFS
1kHz, 100mV pk-pk
DC servo enabled.
0dB volume
A-weighted
10kΩ load
MIN
-1.5
-1
MIN
90
MIN
-1.5
90
TYP
TYP
2.83
-57
+/-1
100
85
85
-92
1.0
90
80
45
6
1
0
PD, Rev 4.0, September 2010
2.83
TYP
100
+/-1
1.0
-85
96
90
62
62
0
MAX
+1.5
MAX
+1
-85
MAX
+1.5
-70
Production Data
Vpk-pk
UNIT
Vrms
UNIT
Vpk-pk
dBV
dBV
dBV
dB
dB
dB
dB
dB
dB
dB
dB
dB
UNIT
Vrms
dBV
mV
dB
dB
dB
dB
dB
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