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參數(shù)資料
| 型號： | UPC2539 |
| 廠商： | NEC Corp. |
| 英文描述： | CONN RCPT MALE 35POS WALL MT |
| 中文描述： | RDS數(shù)據(jù)解調(diào)器IC |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 65K |
| 代理商： | UPC2539 |
μ
PC2539
6
APPLICATION CIRCUIT ESAMPLE
Notes 1.
Pin 7 does not have ability enough to drive LED directly because of internal serial resistor (10k
) shown
in following figure. In application for system with no ARI signal such as RBDS in USA, pin 7 is
recommended to be connected with V
DD
.
Crystal oscillation frequency tolerance :
±
100ppm
2.
The equivalent circuit in pin 7
10k
S K detector block
PLL block
7
0.1 F
V
CC
=+5V
100 F
+
INPUT
4700pF
4700pF
+5V
OPERATE
STOP
24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
11
12
0.1 F
COSTAS
BIPHASE
DECODER
DIFFERENTIAL
DECODER
57kHz BPF
SK DET
CLOCK
RECOVERY
OSC
4.332MHz
+5V
RBDS
22pF
22pF
RDS
*1
*2
S
R
D
C
0.1 F
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