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 57kHz BPF COSTAS SK DET BIPHASE DECODER DIFFERENTIAL DECODER 1 2 3 CLOCK RECOVERY 4 5 6 OSC 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) 2 VDD 1 24 VCC TEST1 2 23 TEST9 TEST2 3 22 TEST8 CLK OUT 4 21 TEST7 DATA OUT 5 20 BPF IN RDS IND 6 19 REF SK IND 7 18 BPF OUT TEST3 8 17 DSB IN TEST4 9 16 AGND DGND 10 15 OP. CTL OSC IN 11 14 TEST6 OSC OUT 12 13 TEST5 µPC2539 PIN FUNCTIONS Pin no. Pin name Function 1 V DD Power Supply for Digital Circuit 2 TEST1 Pin for Test : Normally connect to GND. 3 TEST2 Pin for Test : Normally be open. 4 CLK OUT Bit-Rate-Clock Output Pin 5 DATA OUT RDS Data Output Pin 6 RDS IND RDS Idenrification Indicator : When RDS signal is detected, the output voltage becomes to Low level. 7 SK IND SK Identification Indicator : When SK signal is detected, the output voltage becomes to Low level. 8 TEST3 Pin for Test : Normally connect to GND. 9 TEST4 Pin for Test : Normally connect to GND. 10 DGND GND for Digital Circuit 11 OSC IN Oscillator Input Pin 12 OSC OUT Oscillator Output Pin 13 TEST5 Pin for Test : Normally be open. 14 TEST6 Pin for Test : Normally connect to GND. 15 OP.CTL Operation/Stop control Pin : High:Operation mode, Low:Stop mode 16 AGND GND for Analog Circuit 17 DSB IN DSB Demodulator Input Pin 18 BPF OUT Band-Pass-Filter Output Pin 19 REF Reference Voltage for BPF 20 BPF IN Band-Pass-Filter Input Pin 21 TEST7 Pin for Test : Normally connect to GND. 22 TEST8 Pin for Test : Normally connect to GND. 23 TEST9 Pin for Test : Normally connect to GND. 24 V CC Power Supply for Analog Circuit 3 µPC2539 ELECTRICAL SPECIFICATIONS (PRELIMINARY) ABSOLUTE MAXIMUM RATINGS (Unless otherwise specified, TA=25°C) Parameter Symbol Conditions Ratings Unit Supply voltage V CC V CC pin, V DD pin 7.0 V Power dissipation Pd T A =85°C 280 mW Operating ambient temperature Topt –30 to +85 °C Storage temperature Tstg –40 to +125 °C Caution Exposure to Absolute Macimum Rating for extended periods may affect device reliability; exceeding the ratings could cause permanent damage. The parameters apply independently. RECOMMENDED OPERATING CONDITIONS Parameter Symbol Conditions Sypply voltage V CC V CC pin, V DD pin FM Demoulation Signal Input Voltage Vin MONO, ∆f=75kHz MIN. TYP. MAX. Unit 4.5 5.0 5.5 V 280 mVrms ELECTRICAL CHARACTERISTICS (Unliss otherwise specified, TA=25°C, VCC=VDD=5.0V) Parameter Circuit current Symbol Conditions MIN. TYP. MAX. Unit I CC No Signal 10 15 20 mA SK Detection Sensitivity(ON) Ssk1 SK ONLY 2.5 3.5 4.5 mVrms SK Detection Sensitivity(OFF) Ssk2 SK ONLY 1.0 2.0 3.0 mVrms RDS Detection Sensitivity Srds RDS ONLY, DATA(101010..) 0.1 0.2 0.6 mVrms SK Lock Up Time Tsk SK ONLY, Vsk=10mVrms 12 16 20 bit RDS Lock Up Time 1 Trds1 RDS ONLY 10 40 80 bit RDS Lock Up Time 2 Trds2 RDS+SK, Vsk=10mVrms 20 50 100 bit Output Voltage(H Level) VOH Io=±100 µ A, Pin 4, 5, 6 4.90 4.95 – V Io=±5 µ A, Pin 7 4.90 4.95 – V Io=±100 µ A, Pin 4, 5, 6 – 0.05 0.10 V Io=±5 µ A, Pin 7 – 0.05 0.10 V Output Voltage(L Level) VOL Band-Pass-Filter Characteristics Peak Gain Av fin=57kHz, Vin=10mVrms 22 25 28 dB Pass Band Width BW Av-3dB 2.8 3.3 3.8 kHz Attenuation 1 ATT1 fin=53kHz, Vin=10mVrms 23 27 31 dB Attenuation 2 ATT2 fin=38kHz, Vin=10mVrms 75 85 – dB 120 150 – mVp-p 25 30 – dB Maximum Input Level Vinmax Signal to Noise Ratio S/N Input Impedance Zin 26 35 44 kΩ Zout – 300 660 Ω Output Impedance 4 fin=57kHz fin=57kHz, Vin=3mVrms µPC2539 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 5 µPC2539 APPLICATION CIRCUIT ESAMPLE VCC=+5V +5V INPUT 100 µ F + OPERATE STOP 0.1 µ F 0.1 µ F 4700pF 4700pF 24 23 22 21 20 19 18 17 16 15 14 13 57kHz BPF COSTAS SK DET BIPHASE DECODER DIFFERENTIAL DECODER 1 2 3 CLOCK RECOVERY 4 5 6 OSC 7 8 9 10 12 4.332MHz *2 0.1 µ F +5V RBDS SK IND RDS IND DATA OUT CLK OUT Notes 1. 11 22pF 22pF *1 RDS 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. 2. Crystal oscillation frequency tolerance : ±100ppm The equivalent circuit in pin 7 10k Ω S K detector block PLL block 6 7 µPC2539 PACKAGE DRAWING 24 PIN PLASTIC SOP (300 mil) 24 13 P detail of lead end 1 12 A H J E K F G I C N D M L B M NOTE Each lead centerline is located within 0.12 mm (0.005 inch) of its true position (T.P.) at maximum material condition. ITEM MILLIMETERS INCHES A 15.54 MAX. 0.612 MAX. B 0.78 MAX. 0.031 MAX. C 1.27 (T.P.) 0.050 (T.P.) D 0.40 +0.10 –0.05 0.016 +0.004 –0.003 E 0.1±0.1 0.004±0.004 F 1.8 MAX. 0.071 MAX. G 1.55 0.061 H 7.7±0.3 0.303±0.012 I 5.6 0.220 J 1.1 0.043 K 0.20 +0.10 –0.05 0.008 +0.004 –0.002 L 0.6±0.2 0.024 +0.008 –0.009 M 0.12 0.005 N 0.10 0.004 P 3° +7° –3° 3° +7° –3° P24GM-50-300B-4 7 µPC2539 The application circuits and their parameters are for references only and are not intended for use in actual design-in's. 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Standard: Computers, office equipment, communications equipment, test and measurement equipment, audio and visual equipment, home electronic appliances, machine tools, personal electronic equipment and industrial robots Special: Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster systems, anti-crime systems, safety equipment and medical equipment (not specifically designed for life support) Specific: Aircrafts, aerospace equipment, submersible repeaters, nuclear reactor control systems, life support systems or medical equipment for life support, etc. The quality grade of NEC devices in “Standard“ unless otherwise specified in NEC's Data Sheets or Data Books. If customers intend to use NEC devices for applications other than those specified for Standard quality grade, they should contact NEC Sales Representative in advance. Anti-radioactive design is not implemented in this product. M4 94.11 8