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MSM7541 Просмотр технического описания (PDF) - Oki Electric Industry
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MSM7541
Single Rail CODEC
Oki Electric Industry
MSM7541 Datasheet PDF : 20 Pages
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¡ Semiconductor
MSM7541/7542
APPLICATION CIRCUIT
Analog interface
Analog input
Analog output
0V
+3.3 V
0.1
m
F
51 k
W
MSM7541/7542
AIN– PCMOUT
XSYNC
GSX
AIN+
RSYNC
SG
BCLOCK
PCMIN
AOUT–
PDN
PWI
TMC
VFRO
51 k
W
SGC
0.1
m
F
AG
DG
10
m
F
+
0 to 10
W
1
m
F
V
DD
Digital interface
+3.3 V
PCM signal output
8 kHz SYNC signal input
BCLOCK input
PCM data input
Power Down control input
Analog loop-back
control input
FREQUENCY CHARACTERISTICS ADJUSTMENT CIRCUIT
Microphone amp
R1
M
C1
C2
R2
Receiver impedance to
1.2 k
W
+ 55 nF
R4
C4
R3 C3
AIN–
GSX
AIN+
SG
AOUT+
AOUT–
PWI
VFRO
Transmit frequency
characteristic
Adjustment determined with
C1, C2, R1, R2.
Receive frequency
characteristic
Adjustment determined with
C3, C4, R3, R4.
16/20
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