Bi-CMOS INTEGRATED CIRCUIT

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

Document No. S11570EJ1V0DS00 (1st edition)

Date Published May 1996 P

Printed in Japan

The information in this document is subject to change without notice.

RDS DATA DEMODULATOR IC

©

1996

PRELIMINARY DATA SHEET

24

23

22

21

20

19

18

17

16

15

14

13

12

34

5

6

789

10

11

12

57kHz BPF

COSTAS

BIPHASE

DECODER

DIFFERENTIAL

DECODER

CLOCK

RECOVERY

SK DET

OSC