UPC2539 查看數據表（PDF） - NEC => Renesas Technology
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UPC2539 Datasheet PDF : 8 Pages
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APPLICATION CIRCUIT ESAMPLE
VCC=+5V
INPUT
100 µF + 0.1 µF
4700pF
0.1 µF
4700pF
+5V
OPERATE
STOP
24 23 22 21 20 19 18 17 16 15 14 13
COSTAS
BIPHASE
DECODER
DIFFERENTIAL
DECODER
57kHz BPF
SK DET
CLOCK
RECOVERY
OSC
1 2 3 4 5 6 7 8 9 10 11 12
0.1 µF
+5V
RBDS 22pF
4.332MHz
*2
22pF
*1
RDS
µPC2539
Notes 1.
2.
Pin 7 does not have ability enough to drive LED directly because of internal serial resistor (10kΩ) 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 VDD.
Crystal oscillation frequency tolerance : ±100ppm
The equivalent circuit in pin 7
S K detector block
10k Ω
7
PLL block
6
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