UPC2539 datasheet(6/8 Pages) NEC | RDS DATA DEMODULATOR IC

Part Name

Description

UPC2539

RDS DATA DEMODULATOR IC ( 8 Page)

NEC

6 page

µPC2539

APPLICATION CIRCUIT ESAMPLE

Notes 1.

Pin 7 does not have ability enough to drive LED directly because of internal serial resistor (10k

Ω) 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

10k

Ω

S K detector block

PLL block

0.1 F

VCC=+5V

100 F +

0.1 F

INPUT

4700pF

+5V

OPERATE

STOP

234

789

0.1 F

COSTAS

BIPHASE

DECODER

DIFFERENTIAL

DECODER

57kHz BPF

SK DET

CLOCK

RECOVERY

OSC

4.332MHz

+5V

RBDS

22pF

RDS

0.1 F

1 2 3 4 5 6 7 8

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