UPC2539

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 24-pin plastic SOP (300 mil) µPC2539GS BLOCK DIAGRAM 24 23 22 21 20 19 18 17 16 15 14 13 57kHz BPF COSTAS BIPHASE DECODER SK DET DIFFERENTIAL DECODER 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 µPC2539 PIN CONFIGURATION (Top View) VDD TEST1 TEST2 CLK OUT DATA OUT RDS IND SK IND TEST3 TEST4 DGND OSC IN OSC OUT 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VCC TEST9 TEST8 TEST7 BPF IN REF BPF OUT DSB IN AGND OP. CTL TEST6 TEST5 2 µPC2539 PIN FUNCTIONS Pin no. 1 2 3 4 5 6 Pin name V DD TEST1 TEST2 CLK OUT DATA OUT RDS IND Power Supply for Digital Circuit Pin for Test : Normally connect to GND. Pin for Test : Normally be open. Bit-Rate-Clock Output Pin RDS Data Output Pin RD...