32
31
SCHEMATIC DIAGRAM-5 (TUNER SECTION)
<EZ>
FEMENM
<EZ>: 6.8k
<K>: 3.3k
C763
0.047
<EZ>
IC BLOCK DIAGRAM
IC, BU1920FS
IC, LC72131D
IC, LA1837NL
1
2
16
5
14
8
7
6
15
9
11
12
10
13
3
4
100k
8TH SWITCHED
CAPACITOR FILTER
PLL
57kHz
RDS/ARI
PLL
1187.5HZ
REFERENCE
CLOCK
BI-PHASE
DECODER
TEST CIRCUIT
DIFFERENTIAL
DECODER
FO
CMP
ARI
RCLK
QUAR
RDATA
T57
T2
T1
XO
XI
VSS
VDD
Vref
MUX
RESET
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
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TEL 13942296513 QQ 376315150 892498299