TDA8218 HORIZONTAL AND VERTICAL DEFLECTION CIRCUIT .. . .. .. . DIRECT FRAME-YOKE DRIVE (± 1A) COMPOSITE VIDEO SIGNAL INPUT CAPABILITY FRAME OUTPUT PROTECTION AGAINST SHORT CIRCUITS PLL SUPER SANDCASTLE OUTPUT VERY FEW EXTERNAL COMPONENTS VERY LOW COST POWER PACKAGE STABLE FRAME BLANKING PULSE, GENERATED BY EXTERNAL RC, FOR COMPATIBILITY WITH TEA 5640 POWERDIP 16 + 2 + 2 (Plastic Package) ORDER CODE : TDA8218 DESCRIPTION The TDA8218 is an horizontal and vertical deflection circuit with super sandcastle generator. Used with automatic PAL/SECAM decoder TEA5640, this IC permits a complete low-cost solution for PAL/SECAM applications. V CC1 1 20 VIDEO INPUT FRAME OSCILLATOR 2 19 SUPER SANDCASTLE OUTPUT V CC2 3 18 LINE FLYBACK FRAME FLYBACK GENERATOR 4 17 LINE OUTPUT GROUND 5 16 GROUND GROUND 6 15 GROUND POWER AMPLIFIER INPUT 7 14 BURST KEY R.C. NETWORK FRAME BLANKING R.C. NETWORK 8 13 LINE SAWTOOTH INPUT FRAME POWER SUPPLY 9 12 PHASE DETECTOR 10 11 LINE OSCILLATOR FRAME OUTPUT September 1993 8218-01.EPS PIN CONNECTIONS 1/9 TDA8218 BLOCK DIAGRAM Vcc2 Vcc1 Vcc1 1 2 Frame 8 blanking generator 19 Σ Frame oscillator F.B. RC 18 Flyback generator Power s tag e + YOKE 10 7 Frame-Synchro g enerator Phase 20 Input 4 - Line flyback detector Video 3 9 Output stage 17 detector Line oscillator Burst gate pulse generator Input stage 14 Line Flyback 13 12 11 8218-02.EPS Vcc1 Vcc1 ABSOLUTE MAXIMUM RATINGS Parameter Value Unit 30 V VCC1 Supply Voltage VCC2 Flyback Generator Supply Voltage 35 V Frame Power Supply Voltage 60 V ± 1.5 A A V9 I10NR Frame Output Current (non repetitive) I10 Frame Output Current (continuous) ±1 V17 Line Output Voltage (external) 60 V IP17 Line Output Peak Current 0.8 A IC17 Line Output Continuous Current TSTG Storage Temperature TJ TAMB Max Operating Junction Temperature Operating Ambient Temperature 0.4 A -40 to + 150 o + 150 o 0 to 70 o C C C 8218-01.TBL Symbol THERMAL DATA R TH(j-c) RTH(j-a) TJ 2/9 Parameter Value Unit 10 o C/W Typical Junction-ambient Thermal Resistance 40 o C/W Max Recommended Junction Temperature 120 Max Junction-case Thermal Resistance 2 (Soldered on a 35µm thick 45cm PC Board copper area) o C 8218-02.TBL Symbol TDA8218 ELECTRICAL CHARACTERISTICS VCC1 = 10 V, TAMB = 25 oC (unless otherwise specified ) Symbol Parameter Min. Typ. Max. Unit 9 15 10 22 10.5 mA V 1.4 50 1.75 2 V µs 2.8 5.4 3.2 6.6 100 1.4 64 3.6 7.8 V V nA kΩ µs SUPPLY (Pin 1) ICC1 VCC1 Supply Current Supply Voltage VIDEO INPUT (Pin 20) V20 MWF Reference Voltage (I20 = -1µA) Minimum Width of Frame Pulse (when synchronized with TTL signal) LINE OSCILLATOR (Pin 11) LT11 HT11 BI11 DR11 FLP1 OT11 ∆F ∆θ Low Threshold Voltage High Threshold Voltage Bias Current Discharge Impedance Free Running Line Period (R = 34.9kΩ Tied to VCC1, C = 2.2nF Tied to Ground) Oscillator Threshold for Line Output Pulse Triggering Horizontal Frequency Drift with Temperature (see application) 1.0 62 1.8 66 4.6 V 2 Hz/ C o LINE OUTPUT (Pin 17) LV17 OPW Saturation Voltage (I17 = 200mA) Output Pulse width (line period = 64µs) 26 1.1 28 1.6 30 V µs 1.8 4.5 2.4 5.8 3.2 8 V kΩ 250 0.95 -2 2.60 350 1 500 1.05 +2 7.10 µA LINE SAWTOOTH INPUT (Pin 13) V13 Z13 Bias Voltage Input Impedance PHASE DETECTOR (Pin 12) I12 RI12 LI12 CV12 Output Current During Synchro Pulse Current Ratio (positive/negative) Leakage Current Control RangeVoltage µA V FRAME BLANKING GENERATOR (Pin 8) Tfb K8 IO8 II8 External R.C. Network (Typical values : R = 100kΩ, C = 22nF) Blanking Time (PIn 19, Tfb = K8 .R.C.) Time Blanking Coefficient Output Current during the Frame Blanking : V8 = 2V Input Current after the Frame Blanking : V8 = 7V 0.588 300 1.35 0.613 - 0.2 450 ms 0.644 1 600 µA µA FRAME OSCILLATOR (Pin 2) MFP FPR Low Threshold Voltage High Threshold Voltage LT2 - HT2 Bias Current Discharge Impedance Free Running Frame Period (R = 866kΩ Tied to VCC1, C = 220nF Tied to Ground) Minimum Frame Period (I20 = -100µA) with the Same RC Frame Period Ratio = FFP/MFP 1.6 2.6 300 20.5 2.0 3.1 1.0 30 470 23 2.3 3.6 700 25 1.7 12.8 1.8 1.9 V V V nA Ω ms ms 3/9 8218-03.TBL LT2 HT2 DIF2 BI2 DR2 FFP1 TDA8218 ELECTRICAL CHARACTERISTICS VCC1 = 10 V, T AMB = 25 oC (unless otherwise specified ) Symbol Parameter Min. Typ. Max. Unit FRAME OSCILLATOR (Pin 2) (continued) FG Frame Saw-tooth Gain Between Pin 1 and non Inverting Input of the Frame Amplifier Vertical Frequency Drift with Temperature (see application) ∆F ∆θ -0.4 -3 o Hz/ C 4.10 FRAME POWER SUPPLY (Pin 9) V9 I9 Operating Voltage (with flyback Generator) Supply Current (V9 = 30V) 10 58 15 V mA 30 V 0.06 0.37 0.6 1 V V 1.3 1.7 1.6 2.4 V V 1.6 2.5 2.1 4.5 V V 1.5 3.0 2.1 4.5 V V 0.8 2.2 1.1 4.5 V V 170 µA 9 FLYBACK GENERATOR SUPPLY (Pin 3) VCC2 Operating Voltage 10 FRAME OUTPUT (Pin 10) LV10A LV10B HV10A HV10B FV10A FV10B Saturation Voltage to Ground (V9 = 30V) I10 = 0.1A I10 = 1A Saturation Voltage to V9 (V9 = 30V) I10 = -0.1A I10 = -1A Saturation Voltage to V9 in Flyback Mode (V10 > V9) I10 = 0.1A I10 = 1A FLYBACK GENERATOR (Pin 3 and Pin 4) Flyback Transistor on (output = high state), VCC2 = 30V, V4/3 with I4 → 3 = 0.1A I4 → 3 = 1A Flyback Transistor on (output = high state), VCC2 = 30V, V3/4 with I3 → 4 = 0.1A I3 → 4 = 1A Flyback Transistor off (output = V9 - 8V), V9 - VCC2 = 30V Leakage Current Pin 3 F2DA F2DB FSVA FSVB FCI SUPER SANDCASTLE OUTPUT (Pin 19) SANDT2 SANDL2 BG2 SC3 SC2 Output Voltages (R load = 2.2kΩ) Frame blanking pulse level Line blanking pulse level Burst key pulse level Pulses width and timing Delay between middle of sync pulse and leading edge of burst key pulse Duration of burst key pulse Vertical blanking pulse width : Defined by external R.C. Pin 8 2 4 8 2.5 4.5 9 3 5 V V V 2.3 3.7 2.7 4 3.1 5 µs µs τ Note : 4/9 Switching level Maximum imput current at VPEAK = 800V Limiting voltage at maximum current RC network time constant (Note 1) for the burst key pulse 2 8 4.3 6 V mA V µS 1. An RC network is connected to this input. Typical value for the resistor is 27kΩ and 220pF for the capacitor. A different time constant for RC changes the delay between the middle of the line synchro pulse and the leading edge of the burst key pulse but also the duration of the burst key pulse. 8218-04.TBL LINE FLYBACK INPUT (Pin 18) TDA8218 GENERAL DESCRIPTION The TDA8218 performs all the video and power functions required to provide signals for the line driver and frame yoke. It contains: • A synchronization separator • An integrated frame separator without external components • • • • • A saw-tooth generator for the frame A power amplifier for direct drive of frame yoke (short circuit protected) An open collector output for the line driver A line phase detector and a voltage control oscillator A super sandcastle generator. Figure 1 : Synchronization Separator Circuit SL1 SL2 VR 20 Video R1 8218-03.EPS R2 The slice level of sync-separation is fixed by value of the external resistors R1 and R2. VR is an internally fixed voltage. Figure 2 : Frame Separator Vz Q3 Q4 I ST1 ST2 Vz /2 SL1 8218-04.EPS 3I The sync-pulse allows the discharge of the capacitor by a 2 x I current. A line sync-pulse is not able to discharge the capacitor under VZ/2. A frame sync-pulse permits the complete discharge of the capacitor, so during the frame sync-pulse Q3 and Q4 provide current for the other parts of the circuit. 5/9 TDA8218 Figure 3 : Line Oscillator Vcc1 R5 11 Phase comparator output 8218-05.EPS R4 The oscillator thresholds are internally fixed by resistors. The discharge of the capacitor depends on the internal resistor R4. The control voltage is applied on resistor R5. The sync-pulse drives the current in the comparator. The line flyback integrated by the external net work gives on pin 13 a saw tooth, the DC offset of this saw tooth is fixed by VC. The comparator output provides a positive current for the part of the signal on pin 13 greater than to VC and a negative current for the other part. When the line flyback and the video signal are synchronized, the output of the comparator is an alternatively negativeand positive current. The frame sync-pulse inhibits the comparator to prevent frequency drift of the line oscillator on the frame beginning. Figure 4 : Phase Comparator Figure 5 Vcc1 12 Line Flyback Vc SL2 ST1 6/9 8218-06.EPS Sync pulse Output Current Vc 8218-07.EPS Integrated Flyback 13 TDA8218 Line output (Pin 17) It is an open-collector output. The output positive pulse time is 28µs for a 64µs period. The oscillator thresholds are internally fixed by resistors. The oscillator is synchronized during the last half free run period. The input current during the charge of the capacitor is less than 100nA. is referenced to the middle of the line flyback. The frame blanking generator is a monostable with external R.C. The start blanking pulse is triggered by the falling edge of the frame saw-tooth (Pin 2). The reset is provided by a comparator which compares the capacitor voltage during its charge to an internal threshold fixed by resistors. The frame blanking time is defined by : Frame output amplifier This amplifier is able to drive directly the frame yoke. Its output is short circuit and overload protected; it contains also a thermal protection. The line flyback detection is provided by a comparator which compares the input line flyback pulse to an internal reference. The burst gate pulse position is fixed by the external RC network (pin 14). It Tfb = 0.613 ⋅ R.C. This pulse is available on Super Sand Castle output (Pin 19). Remark : For compatability with TEA5640, frame blanking time must be larger than 1.15ms with centered value @ 1.35ms (R = 100kΩ ± 1%, C = 22nF ± 5%) Figure 6 : Frame Oscillator Vcc1 INPUT CURRENT COMPENSATION 2 8218-08.EPS Frame sync pulse To frame amplifier Figure 7 : Super sandcastle generator Line Flyback Input Vcc1 18 Line Flyback Detection Σ 8 Frame Blanking Generator Burst gate pulse generator Vcc1 RC R Vcc1 C 19 SSC Output BurstKey 14 8218-09.EPS RC Network 7/9 TDA8218 TYPICAL APPLICATION 4.7Ω Vcc +24V 470µF 100nF Vcc1 100µF 100nF IN4002 866kΩ 27kΩ 100kΩ 1% 220pF 47µF 220nF 10% 2 1.5kΩ 220nF 14 120pF 560kΩ 20 1 2.2Ω 8 3 9 4 10 Line Flyback 15k Ω Frame Yoke 30 mH, 15Ω Ipp = 840mA TDA 8218 22nF 13 68pF 22nF 220kΩ 11 5 6 15 16 19 1µF 2.2nF 12nF 100Ω Horizontal Frequency 2.2kΩ Vcc1 8/9 Pins 5 - 6 : Frame oscillator ground Pins 15 - 16 : Frame and line power ground SSC 1000µF 220nF 22kΩ 22kΩ 22kΩ 220kΩ 17 680pF 100kΩ 180pF 4.7kΩ 270Ω 7 18 12 100kΩ Note : 100nF 100Ω 1Ω Vertical Amplitude Vcc1 8218-10.EPS Video Input IN4148 22nF 5% TDA8218 I b1 L a1 PACKAGE MECHANICAL DATA 20 PINS - POWER DIP 16 + 2+ 2 B b e E Z Z e3 D 11 1 10 a1 B b b1 D E e e3 F i L Z Min. 0.51 0.85 Millimeters Typ. Max. 1.4 Min. 0.020 0.033 0.5 0.38 Inches Typ. Max. 0.055 0.020 0.5 24.8 0.015 8.8 2.54 22.86 0.020 0.976 0.346 0.100 0.900 7.1 5.1 3.3 0.280 0.201 DIP20PW.TBL Dimensions PMDIP20W.EPS F 20 0.130 1.27 0.050 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No licence is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. 1994 SGS-THOMSON Microelectronics - All Rights Reserved Purchase of I2C Components of SGS-THOMSON Microelectronics, conveys a license under the Philips I2C Patent. Rights to use these components in a I2C system, is granted provided that the system conforms to the I2C Standard Specifications as defined by Philips. SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. 9/9