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WM8944BECS/R 数据表(PDF) 11 Page - Cirrus Logic

部件名 WM8944BECS/R
功能描述  Mono Low-Power CODEC with Video Buffer
PDF  165 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  CIRRUS [Cirrus Logic]
网页  http://www.cirrus.com
标志 CIRRUS - Cirrus Logic

WM8944BECS/R 数据表(HTML) 11 Page - Cirrus Logic

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WM8944B
Rev 4.3
11
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Bypass to Line Output (IN1/AUX to LINEMIX Differential Input to LINEOUT, 10k
 / 50pF)
SNR (A-weighted)
INPGA_VOL = 0dB
90
98
dB
THD+N
INPGA_VOL = 0dB
-89.5
-80
dB
Bypass to Speaker Output (IN1/AUX to SPKMIX Differential Input to SPKOUTP/SPKOUTN, 8R BTL)
SNR (A-weighted)
SPKVOL = 0dB
90
96
dB
THD+N
SPKVOL = 0dB
-75
-65
dB
DAC Output Path Performance (DAC to LINEOUT, 10k
 / 50pF)
Maximum output signal
level (changes in
proportion to
LDOVOUT)
1
Vrms
SNR (A-weighted)
85
96
dB
THD
-80
-71
dB
THD+N
-78
-70
dB
Mute attenuation
125
dB
PSRR (with respect to
LDOVDD)
217Hz, 100mV pk-pk
48
dB
1kHz, 100mV pk-pk
60
Line Output Resistance
10
k
Line Output
Capacitance
50
pF
DAC Output Path Performance (DAC to SPKOUTP or SPKOUTN, 10k
 / 50pF)
Maximum output signal
level (changes in
proportion to
LDOVOUT)
1
Vrms
SNR (A-weighted)
85
96
dB
THD
-78
-68
dB
THD+N
-76
-66
dB
Speaker Output Performance (Speaker Output SPKOUTP/SPKOUTN, 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
48
dB
1kHz
60
PSRR (with respect to
SPKVDD)
217Hz, 100mV pk-pk
89
dB
1kHz, 100mV pk-pk
79
Speaker Resistance
8
Speaker Capacitance
50
pF



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