SP5024DP

Obsolescence Notice This product is obsolete. This information is available for your convenience only. For more information on Zarlink’s obsolete products and replacement product lists, please visit http://products.zarlink.com/obsolete_products/ SP5024 3-Wire Bus Controlled Synthesiser DS2452 - 2.1 December 1992 The SP5024 is a programming variant of the SP5510 allowing the design of one tuner with either I 2C bus or 3-wire bus format depending on which device is inserted. The SP5024, when used with a TV varicap tuner, forms a complete phase locked loop tuning system. The circuit consists of a divide-by-8 prescaler with its own preamplifier and a 15 bit programmable divider controlled by a serially - loaded data register. Four open-collector outputs, each independently programmable, are included. The device has two modes of operation selected by the 'mode selected input'. In mode 1 the comparison frequency is 7.8125kHz and the programmable divider MSB is bypassed; mode 2 comparison frequency is 6.25kHz. The comparison frequencies are both obtained from a 4MHz crystal controlled on-chip oscillator. The comparator has a charge pump output with an output amplifier stage around which feedback may be applied. Only one external transistor is required for varicap line driving. CHARGE PUMP CRYSTAL MODE SELECT DATA CLOCK PORT P4 PORT P3 PORT P2 PORT P1 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 DRIVE OUTPUT VEE RF INPUT RF INPUT VCC NC NC LOCK ENABLE FEATURES s Complete 1.3GHz Single Chip System s Dual Standard 50kHz or 62.5kHz Step Size s Low Power Consumption (5V 40mA) s Programming Compatible with Toshiba TD6380 and TD6381 * s Pin Compatible with SP5510 * s Low Radiation s Varactor Drive Amplifier Disable s Charge Pump Disable s Single Port 18/19 Bit Serial Data Entry s Four Controllable Outputs s ESD Protection † DP18 CHARGE PUMP CRYSTAL MODE SELECT DATA CLOCK PORT P4 PORT P3 PORT P2 1 16 DRIVE OUTPUT VEE RF INPUT RF INPUT VCC LOCK ENABLE 8 9 PORT P1 MP16 * See notes on pin compatibility † Normal ESD handling procedures should be observed Fig. 1 Pin connections – top view APPLICATIONS s Satellite TV When Combined With SP4902 2.5GHz Prescaler s Cable Tuning Systems s VCRs ORDERING INFORMATION SP5024 DP SP5024S MP (18-lead plastic package) (16-lead miniature plastic package) SP5024 Tamb = -20°C to +80°C, VCC = +4·5V to +5·5V. Reference frequency = 4MHz. Pin numbers refer to SP5024 (DP package). These characteristics are guaranteed by either production test or design. They apply within the specified ambient temperature and supply voltage unless otherwise stated. Value Characteristic Supply current Prescaler input voltage Prescaler input voltage Prescaler input impedance Input capacitance High level input voltage High level input voltage Low level input voltage High level input current Low level input current Low level input current High level input current Low level input current Clock input hysteresis Clock rate Data set up time Data hold time Enable set up time Enable hold time Clock-to-enable time Charge pump output current Charge pump output leakage current Drift due to leakage Charge pump drive output current Charge pump amplifier gain Oscillator temperature stability Oscillator stability with supply voltage Recommended crystal series resistance Crystal oscillator drive level Crystal oscillator source impedance 2 2 10 40 -400 mV p-p Ω Nominal spread = 615% 18 1 6400 2 2 200 ppm/°C ppm/V Ω "Parallel resonant" crystal t2 t3 t1 t5 t4 Symbol ICC Pin Min. 14 15,16 15, 16 15,16 4,5,10 3 3,4,5,10 4,5,10 5 4,10 3 3 5 5 4 4 10 10 10 1 1 300 600 300 600 300 ± 150 ±5 5 0.4 0.5 3 4 0 12.5 30 50 2 VCC VCC 0.6 1 5 -250 150 -1 Typ. 40 Max. 55 300 300 mA mVRMS mVRMS Ω pF V V V µA µA µA µA µA V MHz ns ns ns ns ns µA nA mV/s mA See Fig. 3 See Fig. 3 See Fig. 3 See Fig. 3 See Fig. 4 V pin 1 = 2·0V V pin 1 = 2·0V At collector of external varicap drive transistor V pin 18 = 0·7V Pin 18 Current 100µA VIN = 5·5V, VCC = 5·5V VIN = 0V, VCC = 5·5V VIN = 0V, VCC = 5·5V VIN = 5·5V, VCC = 5·5V VIN = 0V, VCC = 5·5V VCC = 5V 50MHz to 1GHz sinewave 1.3GHz, see Fig. 5 Units Conditions ELECTRICAL CHARACTERISTICS 2 SP5024 ELECTRICAL CHARACTERISTICS (continued) Value Characteristic Port and Lock sink current Port leakage current Lock leakage current Varactor Drive Amp Disable Charge Pump Disable Symbol Pin Min. 6 - 9,11 6-9 11 10 4 -350 -350 10 10 10 Typ. Max. mA µA µA µA µA VOUT = 0.7V VOUT = 13.2V VOUT = VCC VIN =