UPC2539GS Просмотр технического описания (PDF) - NEC => Renesas Technology

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Компоненты Описание

производитель

UPC2539GS

RDS DATA DEMODULATOR IC

NEC => Renesas Technology 

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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