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PDF UPC2539 Data sheet ( Hoja de datos )
| Número de pieza | UPC2539 | |
| Descripción | RDS DATA DEMODULATOR IC | |
| Fabricantes | NEC | |
| Logotipo |  |
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PRELIMINARY DATA SHEET
Bi-CMOS INTEGRATED CIRCUIT
µPC2539
RDS DATA DEMODULATOR IC
The µPC2539 is data demodulator IC for FM receiver applying to Radio Data System in European countries and
Radio Broadcasting Data System in USA.
This IC carries out to extract 57kHz RDS signal from FM multiplex signal, demodulate data-stream, recover
bit-rate-clock, and discriminate SK signal in ARI system.
FEATURES
• Adjustment-free
• Built-in 57kHz band-pass-filter consist of switched capactiors.
• High sensitivity.
• Employing digital PLL.
• Small outline plastic package
ORDERING INFORMATION
Part Number
Package
µPC2539GS
24-pin plastic SOP (300 mil)
BLOCK DIAGRAM
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
The information in this document is subject to change without notice.
Document No. S11570EJ1V0DS00 (1st edition)
Date Published May 1996 P
Printed in Japan
©
1996
1 page  
TIMING CHART OF DATA OUTPUT AND CLOCK OUTPUT
DATA OUTPUT
(From pin5)
CLOCK OUTPUT
(From pin4)
210.5
µs
±10 µ s
421.5
µs
±10 µ s
210.5
µs
±10 µ s
µPC2539
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet UPC2539.PDF ] | |
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