INTEGRATED CIRCUITS DATA SHEET SAA5231 Teletext video processor Product specification File under Integrated Circuits, IC02 November 1986 Philips Semiconductors Product specification Teletext video processor SAA5231 GENERAL DESCRIPTION The SAA5231 is a bipolar integrated circuit intended as a successor to the SAA5030. It extracts Teletext Data from the video signal, regenerates Teletext Clock and synchronizes the text display to the television syncs. The integrated circuit is intended to work in conjunction with CCT (Computer Controlled Teletext), EUROM or other compatible devices. Features • Adaptive data slicer • Data clock regenerator • Adaptive sync separator, horizontal phase detector and 6 MHz VCO forming display phase locked loop (PLL) QUICK REFERENCE DATA Supply voltage (pin 16) VCC typ. 12 V Supply current (pin 16) ICC typ. 70 mA pin 2 LOW V27-13(p-p) typ. 1 V pin 2 HIGH V27-13(p-p) typ. 2,5 V Video input amplitude (pin 27) (peak-to-peak value) Storage temperature range Tstg Operating ambient temperature range Tamb PACKAGE OUTLINE 28-lead dual in-line; plastic (SOT117); SOT117-1; 1996 November 14 November 1986 2 -20 to + 125 °C 0 to + 70 °C November 1986 26 3 video input level select 2 GAIN SWITCH ADAPTIVE SYNC SEPARATOR composite video input 27 SENSE 'NO INPUT' (SCS) 28 25 3 4 1 7 21 5 6 9 CLOCK PHASE DETECTOR SENSE EXTERNAL DATA external data input 8 ADAPTIVE DATA SLICER 10 HORIZONTAL PHASE DETECTOR 19 18 11 OSCILLATOR ÷2 PHASE SHIFTER LATCHES VOLTAGE CONTR. OSCILLATOR 20 13 16 VCC (+12 V) 12 14 15 17 MGH184 teletext clock output (TTC) teletext data output (TTD) 6 MHz clock output (F6) Teletext video processor Fig.1 Block diagram. sync output HF LOSS COMPENSATOR SENSE 'NO LOAD' DUAL POLARITY BUFFER SAA5231 22 (VCR) (PL/CBB) 23 PULSE GENERATOR 24 video recorder mode input sandcastle input pulse k, full pagewidth (TCS) or scan composite sync input text composite sync input video composite sync output (VCS) Philips Semiconductors Product specification SAA5231 Philips Semiconductors Product specification Teletext video processor SAA5231 PINNING text composite sync input (TCS) or 28 scan composite sync input (SCS) handbook, full pagewidth sync output 1 video input level select 2 27 composite video input HF filter 3 26 black level store HF 4 25 video composite sync output (VCS) store amplitude 5 24 pulse timing capacitor store zero level 6 23 pulse timing resistor 22 sandcastle input pulse (PL/CBB) external data input 7 SAA5231 data timing 8 21 filter 1 store phase 9 20 oscillator input 19 filter 2 VCR 10 crystal 11 18 oscillator output clock filter 12 17 6 MHz output (F6) 16 supply VCC ground 13 clock output (TTC) 14 15 data output (TTD) MGH185 Fig.2 Pinning diagram. RATINGS Limiting values in accordance with the Absolute Maximum System (IEC 134) Supply voltage (pin 16) VCC max. Storage temperature range Tstg − 20 to + 125 °C Operating ambient temperature Tamb November 1986 4 13,2 V 0 to + 70 °C Philips Semiconductors Product specification Teletext video processor SAA5231 CHARACTERISTICS VCC = 12 V; Tamb = 25 °C with external components as shown in application circuits unless otherwise stated. PARAMETER SYMBOL MIN. TYP. MAX. UNIT Supply (pin 16) Supply voltage VCC 10,8 12,0 13,2 V Supply current ICC 50 70 105 mA video input select level LOW (pin 2) V27-13(p-p) 0,7 1 1,4 V video input select level HIGH (pin 2) V27-13(p-p) 1,75 2,5 3,5 V Source impedance Zs − − 250 Ω Sync amplitude (peak-to-peak value) V27-13(p-p) 0,1 − 1 V Input voltage LOW V2-13 0 − 0,8 V Input voltage HIGH V2-13 2,0 − 5,5 V Input current LOW I2 0 − −150 µA Input current HIGH I2 0 − 1 mA Input voltage LOW V28-13 0 − 0,8 V Input voltage HIGH V28-13 2,0 − 7,0 V Input voltage LOW V28-13 0 − 1,5 V Input voltage HIGH V28-13 3,5 − 7,0 V at V28 = 0 to 7 V I28 −40 −70 −100 µA at V28 = 10 V to VCC I28 −5 − +5 µA Output voltage LOW V25-13 0 − 0,4 V Output voltage HIGH V25-13 2,4 − 5,5 V D.C. output current LOW I25 − − 0,5 mA D.C. output current HIGH I25 − − −1,5 mA Sync separator delay time td 0,25 0,35 0,40 µs Video input and sync separator Video input amplitude (sync to white) (peak-to-peak value) Video input level select Text composite sync input (TCS) Scan composite sync input (SCS) Select video sync from pin 1 Input current (pin 28) Video composite sync output (VCS) November 1986 5 Philips Semiconductors Product specification Teletext video processor SAA5231 PARAMETER SYMBOL MIN. TYP. MAX. UNIT Dual polarity buffer output TCS amplitude (peak-to-peak value) V1-13(p-p) 0,20 0,45 0,65 V Video sync amplitude (peak-to-peak value) V1-13(p-p) − − 1 V Output current I1 −3 − +3 mA RL to ground (0 V) V1-13 1,0 1,4 2,0 V RL to VCC (12 V) V1-13 9,0 10,1 11,0 V PL on (LOW) V22-13 0 − 3 V PL off (HIGH) V22-13 3,9 − 5,5 V CBB on (LOW) V22-13 0 − 0,5 V CBB off (HIGH) V22-13 1,0 − 5,5 V I22 −10 − + 10 µA Pulse duration using composite video tp 2,0 2,4 2,8 µs using scan composite sync tp 3,0 3,5 4,0 µs tL 100 − − µs A.C. output voltage (peak-to-peak value) V17-13(p-p) 1 2 3 V A.C. and d.c. output voltage range V17-13(max) 4 − 8,5 V Rise and fall time tr; tf 20 − 40 ns Load capacitance C17-13 − − 40 pF VCR-mode on (LOW) V10-13 0 − 0,8 V VCR-mode off (HIGH) V10-13 2,0 − VCC V Input current I10 −10 − +10 µA video input level select LOW (pin 2) V27-13 0,30 0,46 0,70 V video input level select HIGH (pin 2) V27-13 0,75 1,15 1,75 V D.C. output voltage Sandcastle input pulse (PL/CBB) Phase lock pulse (PL) Blanking pulse (CBB) Input current Phase locked loop (PLL) Phase detector timing time PL must be LOW to make VCO run-free 6 MHz clock output (F6) Video recorder mode input (VCR) Data slicer Data amplitude of video input (pin 27) November 1986 6 Philips Semiconductors Product specification Teletext video processor SAA5231 PARAMETER SYMBOL MIN. TYP. MAX. UNIT Teletext clock output A.C. output voltage (peak-to-peak value) V14-13(p-p) 2,5 3,5 4,5 V D.C. output voltage (centre) V14-13 3,0 4,0 5,0 V Load capacitance CL − − 40 pF Rise and fall times tr; tf 20 30 45 ns Delay of falling edge relative to other edges of TTD td −20 0 +20 ns A.C. output voltage (peak-to-peak value) V15-13(p-p) 2,5 3,5 4,5 V D.C. output voltage (centre) V15-13 3,0 4,0 5,0 V Load capacitance CL − − 40 pF Rise and fall times tr; tf 20 30 45 ns Teletext data output APPLICATION INFORMATION 47 µF handbook, full pagewidth VCC 47 nF 3.3 kΩ 82 Ω 47 nF 47 nF 15 µF 22 nF TCS sandcastle input 1.2 kΩ VCS F6 composite video input 68 kΩ 2.2 µF 220 pF 68 nF 28 27 26 25 24 TTD 50 µH 10 pF (1) 23 sync out 22 21 20 19 18 10 nF 17 16 15 27 pF SAA5231 1 2 3 4 5 6 7 8 9 10 11 12 13 15 µH 14 TTC 1.2 kΩ video input level select 15 pF 1 nF 470 pF 22 nF 270 pF 100 pF XTAL 13.875 MHz 15 pF data input VCR (1) Coil: 50 µH at 1 kHz, Co = 4 pF. Adjust the free-running frequency to 6000 kHz ± 30 kHz. Fig.3 Application circuit using L/C circuit in PLL. November 1986 7 MGH189 Philips Semiconductors Product specification Teletext video processor SAA5231 VCC handbook, full pagewidth 47 nF 47 nF 15 µF 22 nF TCS sandcastle input 1.2 kΩ composite video input VCS 68 kΩ 2.2 µF 28 27 26 18 pF 220 pF 68 nF 25 24 23 22 sync out F6 6 MHz 330 Ω 22 pF (1) 21 20 TTD 10 nF 19 18 17 16 15 27 pF SAA5231 1 2 3 4 5 6 7 8 9 10 11 12 13 15 µH 14 TTC 1.2 kΩ 15 pF video input level select 1 nF 470 pF 22 nF 270 pF 100 pF XTAL 13.875 MHz 15 pF data input MGH188 (1) Quartz crystal e.g. catalogue number 4322 143 04101. Adjust the free-running frequency to 6000,2 kHz ± 0,2 kHz. a. using quartz crystal in PLL 10 µF handbook, full pagewidth VCC 220 nF 470 Ω 47 nF 3.3 kΩ 47 nF 15 µF 22 nF TCS sandcastle input 1.2 kΩ composite video input VCS 68 kΩ 2.2 µF 28 27 26 18 pF 220 pF 68 nF 25 24 23 sync out F6 6 MHz 22 21 330 Ω 22 pF (1) 20 TTD 10 nF 19 18 17 16 15 27 pF SAA5231 1 2 3 4 5 6 7 8 9 10 11 12 13 15 µH 14 TTC 1.2 kΩ video input level select 15 pF 1 nF 470 pF 22 nF 270 pF 100 pF XTAL 13.875 MHz 15 pF data input MGH187 (1) Ceramic resonator e.g. Kyocera KBR 6,0 M. Adjust the free-running frequency to 6010 kHz ± 5 kHz. b. using ceramic resonator in PLL. Fig.4 Application circuit November 1986 8 Philips Semiconductors Product specification Teletext video processor SAA5231 Component specifications Specifications of some external components in Figs 3, 4a and 4b. Quartz crystal 13,875 MHz; Figs 3, 4a and 4b. Load resonance frequency (f) 13,875 MHz; adjustment tolerance ± 40 × 10−6 Load capacitance (CL) 20 pF Temperature range (T) −20 to +70 °C; frequency tolerance maximum ± 30 × 10−6 Resonance resistance (Rr) typical 10 Ω maximum 60 Ω Motional capacitance (C1) typical 19 fF Static parallel capacitance (Co) typical 5 pF Fixed inductance Figs 3, 4a and 4b. Inductance (L) 15 µH ± 20% Quality factor (Q) minimum 20 Variable inductance Fig. 3 Inductance (L) 50 µH at 1 kHz Static parallel capacitance (Co) typical 4 pF Quartz crystal Fig. 4a Preferred type 4322 143 04101 Load resonance frequency (f) 6 MHz; adjustment tolerance ± 40 × 10−6 Load capacitance (CL) 20 pF Temperature range (T) −20 to +70 °C; frequency tolerance ± 30 × 10−6 Resonance resistance (Rr) 60 Ω Motional capacitance (C1) typical 28 fF Static parallel capacitance (Co) typical 7 pF Ceramic resonator; Fig. 4b Preferred type KBR 6,0 M, Kyocera Load resonance frequency (f) 6 MHz; adjustment tolerance ± 0,5% Load capacitance (CL) 20 pF Temperature range (T) −20 to +70 °C; frequency tolerance maximum ± 0,3% Resonance resistance (Rr) typical 6 Ω Motional capacitance (C1) typical 9 pF Static parallel capacitance (Co) typical 60 pF Ageing (10 years) f maximum ± 0,3% November 1986 9 Philips Semiconductors Product specification Teletext video processor SAA5231 The function is quoted against the corresponding pin number. 1. Synch output to TV Output with dual polarity buffer, a load resistor to 0 V or + 12 V selects positive-going or negative-going syncs. 2. Video input level select When this pin is LOW a 1 V video input level is selected. When the pin is not connected it floats HIGH selecting a 2,5 V video input level. 3. HF filter The video signal for the h.f.-loss compensator is filtered by a 15 pF capacitor connected to this pin. 4. Store h.f. The h.f. amplitude is stored by a 1 nF capacitor connected to this pin. 5. Store amplitude The amplitude for the adaptive data slicer is stored by a 470 pF capacitor connected to this pin. 6. Store zero level The zero level for the adaptive data slicer is stored by a 22 nF capacitor connected to this pin. 7. External data input Current input for sliced teletext data from external device. Active HIGH level (current), low impedance input. 8. Data timing A 270 pF capacitor is connected to this pin for timing of the adaptive data slicer. 9. Store phase The output signal from the clock phase detector is stored by a 100 pF capacitor connected to this pin. 10. Video tape recorder mode (VCR) Signal input to command PLL into short time constant mode. Not used in application circuit Fig.4a or Fig.4b. 11. Crystal A 13,875 MHz crystal, 2 x data rate, connected in series with a 15 pF capacitor is applied via this pin to the oscillator and divide-by-two to provide the 6,9375 MHz clock signal. 12. Clock filter A filter for the 6,9375 MHz clock signal is connected to this pin. 13. Ground (0 V) 14. Teletext clock output (TTC) Clock output for CCT (Computer Controlled Teletext). 15. Teletext data output (TTD) Data output for CCT. 16. Supply voltage VCC (+ 12 V typ.) 17. Clock output (F6) 6 MHz clock output for timing and sandcastle generation in CCT. 18. Oscillator output (6 MHz) A series resonant circuit is connected between this pin and pin 20 to control the nominal frequency of the VCO. 19. Filter 2 A filter with a short time constant is connected to this pin for the horizontal phase detector. It is used in the video recorder mode and while the loop is locking up. November 1986 10 Philips Semiconductors Product specification Teletext video processor SAA5231 20. Oscillator input (6 MHz) See pin 18. 21. Filter 1 A filter with a long time constant is connected to this pin for the horizontal phase detector. 22. Sandcastle input pulse (PL/CBB) This input accepts a sandcastle waveform, which is formed from PL and CBB from the CCT. Signal timing is shown in Fig.5. 23. Pulse timing resistor The current for the pulse generator is defined by a 68 Ω resistor connected to this pin. 24. Pulse timing capacitor The timing of the pulse generator is determined by a 220 pF capacitor connected to this pin. 25. Video composite sync output (VCS) The output signal is for CCT. 26. Black level The black level for the adaptive sync separator is stored by a 68 nF capacitor connected to this pin. 27. Composite video input (CVS) The composite video signal is input via a 2,2 µF clamping capacitor to the adaptive sync separator. 28. Text composite sync input (TCS)/Scan composite sync input (SCS) TCS is input from CCT or SCS from external sync circuit. SCS is expected when there is no load resistor at pin 1. If pin 28 is not connected the sync output on pin 1 will be the composite video input at pin 27, internally buffered. handbook, full pagewidth VIDEO SIGNAL (pin 27) 5V SANDCASTLE INPUT (pin 22) 2V 0V 0 1.5 4.7 8.5 33.5 t (µs) MGH186 Fig.5 Sandcastle waveform and timing. November 1986 11 Philips Semiconductors Product specification Teletext video processor SAA5231 PACKAGE OUTLINE seating plane handbook, full pagewidthdual in-line package; 28 leads (600 mil) DIP28: plastic SOT117-1 ME D A2 L A A1 c e Z w M b1 (e 1) b MH 15 28 pin 1 index E 1 14 0 5 10 mm scale DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT A max. A1 min. A2 max. b b1 c D (1) E (1) e e1 L ME MH w Z (1) max. mm 5.1 0.51 4.0 1.7 1.3 0.53 0.38 0.32 0.23 36.0 35.0 14.1 13.7 2.54 15.24 3.9 3.4 15.80 15.24 17.15 15.90 0.25 1.7 inches 0.20 0.020 0.16 0.066 0.051 0.020 0.014 0.013 0.009 1.41 1.34 0.56 0.54 0.10 0.60 0.15 0.13 0.62 0.60 0.68 0.63 0.01 0.067 Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. REFERENCES OUTLINE VERSION IEC JEDEC SOT117-1 051G05 MO-015AH November 1986 EIAJ EUROPEAN PROJECTION ISSUE DATE 92-11-17 95-01-14 12 Philips Semiconductors Product specification Teletext video processor SAA5231 The device may be mounted up to the seating plane, but the temperature of the plastic body must not exceed the specified maximum storage temperature (Tstg max). If the printed-circuit board has been pre-heated, forced cooling may be necessary immediately after soldering to keep the temperature within the permissible limit. SOLDERING Introduction There is no soldering method that is ideal for all IC packages. Wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. However, wave soldering is not always suitable for surface mounted ICs, or for printed-circuits with high population densities. In these situations reflow soldering is often used. Repairing soldered joints Apply a low voltage soldering iron (less than 24 V) to the lead(s) of the package, below the seating plane or not more than 2 mm above it. If the temperature of the soldering iron bit is less than 300 °C it may remain in contact for up to 10 seconds. If the bit temperature is between 300 and 400 °C, contact may be up to 5 seconds. This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in our “IC Package Databook” (order code 9398 652 90011). Soldering by dipping or by wave The maximum permissible temperature of the solder is 260 °C; solder at this temperature must not be in contact with the joint for more than 5 seconds. The total contact time of successive solder waves must not exceed 5 seconds. DEFINITIONS Data sheet status Objective specification This data sheet contains target or goal specifications for product development. Preliminary specification This data sheet contains preliminary data; supplementary data may be published later. Product specification This data sheet contains final product specifications. Limiting values Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information Where application information is given, it is advisory and does not form part of the specification. LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale. November 1986 13