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WM8904ECS/R 数据表(PDF) 17 Page - Wolfson Microelectronics plc

部件名 WM8904ECS/R
功能描述  Ultra Low Power CODEC for Portable Audio Applications
PDF  188 Pages
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制造商  WOLFSON [Wolfson Microelectronics plc]
网页  http://www.wolfsonmicro.com
标志 WOLFSON - Wolfson Microelectronics plc

WM8904ECS/R 数据表(HTML) 17 Page - Wolfson Microelectronics plc

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Pre-Production
WM8904
w
PP, Rev 3.3, September 2012
17
High Performance Stereo Playback to Line-out - DAC input to LINEOUTL+LINEOUTR pins with 10k
 / 50pF load
Test conditions:
LINEOUTL_VOL = LINEOUTR_VOL = 111001b (0dB)
Low Power Playback mode disabled. (See Table 49 for details; note that Low Power Playback mode is disabled by default.)
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
Low Power Stereo Playback to Line-out - DAC input to LINEOUTL+LINEOUTR pins with 10k
 / 50pF load
Test conditions:
LINEOUTL_VOL = LINEOUTR_VOL = 111001b (0dB),
Low Power Playback Mode enabled (see Table 48 for details)
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
Signal to Noise Ratio
SNR
A-weighted
95
dB
Total Harmonic Distortion + Noise
THD+N
10k
 load
-82
dB
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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