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WM8903 Datasheet(PDF) 12 Page - Wolfson Microelectronics plc

Part # WM8903
Description  Ultra Low Power CODEC for Portable Audio Applications
PDF  178 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8903 Datasheet(HTML) 12 Page - Wolfson Microelectronics plc

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WM8903
Production Data
w
PD, Rev 4.5, June 2012
12
PGA and microphone boost
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Minimum PGA gain setting
L_MODE/R_MODE= 00b or 01b
-1.55
dB
L_MODE/R_MODE= 10b
+12
Maximum PGA gain setting
L_MODE/R_MODE= 00b or 01b
+28.28
dB
L_MODE/R_MODE= 10b
+30
Single-ended to differential
conversion gain
L_MODE/R_MODE= 00b
+6
dB
PGA gain accuracy
L_MODE/R_MODE= 00b
Gain -1.55 to +6.7dB
-1
+1
dB
L_MODE/R_MODE= 00b
Gain +7.5 to +28.3dB
-1.5
+1.5
L_MODE/R_MODE= 1X
Gain +12 to +24dB
-1
+1
L_MODE/R_MODE= 1X
Gain +27 to +30dB
-1.5
+1.5
Mute attenuation
all modes of operation
88
dB
Equivalent input noise
L_MODE/R_MODE= 00b or 01b
114
828
µVrms
nV/√Hz
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
0.91
-0.76
mW
Vrms
dBV
1% THD
RLoad= 15
30
0.67
-3.47
mW
Vrms
dBV
DC Offset
DC servo enabled, calibration
complete.
0
+/-1.5
mV
Signal to Noise Ratio
SNR
A-weighted
90
96
dB
Total Harmonic Distortion
THD
RL=30; Po=2mW
-93
dB
RL=30; Po=20mW
-82
RL=15; Po=2mW
-83
-72
RL=15; Po=20mW
-83
Total Harmonic Distortion + Noise
THD+N
RL=30; Po=2mW
-90
dB
RL=30; Po=20mW
-82
RL=15; Po=2mW
-81
-70
RL=15; Po=20mW
-81
Channel Separation
1kHz signal, 0dBFS
100
dB
10kHz signal, 0dBFS
85
Channel Level Matching
1kHz signal, 0dBFS
+/-1
dB
Power Supply Rejection Ratio
PSRR
1kHz, 100mV pk-pk
60
dB
20kHz, 100mV pk-pk
40



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