WM8945 查看數據表（PDF） - Wolfson Microelectronics plc
零件编号
产品描述 (功能)
比赛名单
WM8945 Datasheet PDF : 169 Pages
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Production Data
PARAMETER
SYMBOL
TEST CONDITIONS
Bypass to Line Output (IN2L to Input PGA to Line Output, 10k / 50pF)
SNR (A-weighted)
PGA Gain = 0dB
INPPGAVOL = 0dB
THD+N
PGA Gain = 0dB
INPPGAVOL = 0dB
MIN
TYP
90
98
-89.5
WM8945
MAX
UNIT
dB
-82
dB
Bypass to Speaker Output (single-ended AUX1, AUX2 to Input PGA to SPKMIX to Speaker Output, 10k / 50pF)
SNR (A-weighted)
PGA Gain = 0dB
90
96
dB
INPPGAVOL = 0dB
THD+N
PGA Gain = 0dB
-86.5
-77
dB
INPPGAVOL = 0dB
DAC Output Path Performance (DAC to Line Output, 10k / 50pF)
Maximum output signal
level (changes in
proportion to LDOVOUT)
SNR (A-weighted)
THD
THD+N
Mute attenuation
PSRR (with respect to
LDOVDD)
217Hz
1kHz
Line Output Resistance
Line Output Capacitance
1
Vrms
85
96
dB
-80
-72
dB
-78
-70
dB
125
dB
48
dB
60
10
k
50
pF
DAC Output Path Performance (DAC to Speaker Output, 10k / 50pF)
Maximum output signal
level (changes in
proportion to LDOVOUT)
SNR (A-weighted)
THD
THD+N
1
Vrms
96
dB
-78
dB
-76
dB
Speaker Output Performance (Speaker Output, 8 BTL)
SNR (A-weighted)
90
96
dB
THD
PO=150mW
0.03
%
-68
dB
PO=350mW
2.944
%
30.6
dB
THD+N
PO=150mW
0.05
%
-66
dB
PO=350mW
3.72
%
-28.6
dB
Mute attenuation
92
dB
PSRR (with respect to
LDOVDD)
217Hz
1kHz
48
dB
60
PSRR (with respect to
SPKVDD)
217Hz
1kHz
89
dB
79
Speaker Resistance
8
Speaker Capacitance
50
pF
w
PD, May 2011, Rev 4.1
11
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