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TDA8214B
HORIZONTAL AND VERTICAL DEFLECTION CIRCUIT
. . . . . . . .
DIRECT FRAME-YOKE DRIVE ( 1A) COMPOSITE VIDEO SIGNAL INPUT CAPABILITY FRAME OUTPUT PROTECTION AGAINST SHORT CIRCUITS PLL VIDEO IDENTIFICATION CIRCUIT SUPER SANDCASTLE OUTPUT VERY FEW EXTERNAL COMPONENTS VERY LOW COST POWER PACKAGE
POWERDIP 16 + 2 + 2 (Plastic Package) ORDER CODE : TDA8214B
DESCRIPTION The TDA8214B is an horizontal and vertical deflection circuit with super sandcastle generator and video identification output. Used with TDA8213 (Video & Sound IF system) and TDA8217 (Pal decoder and video processor), this IC permits a complete low-cost solution for PAL applications. PIN CONNECTIONS
VCC1 FRAME OSCILLATOR V CC2 FRAME FLYBACK GENERATOR GROUND GROUND POWER AMPLIFIER INPUT VIDEO IDENTIFICATION OUTPUT FRAME POWER SUPPLY FRAME OUTPUT
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
VIDEO INPUT SUPER SANDCASTLE OUTPUT LINE FLYBACK INPUT LINE OUTPUT GROUND GROUND RC NETWORK LINE SAWTOOTH INPUT PHASE DETECTOR LINE OSCILLATOR
8214B-01.EPS
September 1993
1/9
TDA8214B
BLOCK DIAGRAM
Vcc2
Vcc1
1
2
9
3
4
Video Identification
8
Frame blanking detector Line flyback detector
Frame oscillator
19
+ -
Power stage
Flyback generator
YOKE
10 7
2s
Frame-Synchro generator Phase detector
Video Input
Output stage
17
20
Input stage Burst gate pulse generator
2s
18
Line Flyback
Line oscillator
14
13
12
11
Vcc1
8214B-02.EPS
Vcc1
ABSOLUTE MAXIMUM RATINGS
Symbol VCC1 VCC2 V9 I10NR I10 V17 IP17 IC17 TSTG TJ TAMB Supply Voltage Flyback Generator Supply Voltage Frame Power Supply Voltage Frame Output Current (non repetitive) Frame Output Current (continuous) Line Output Voltage (external) Line Output Peak Current Line Output Continuous Current Storage Temperature Max Operating Junction Temperature Operating Ambient Temperature Parameter Value 30 35 60 1.5 1 60 0.8 0.4 -40 to + 150 + 150 0 to 70 Unit V V V A A V A A
o o o
C C
THERMAL DATA
Symbol RTH(j-c) RTH(j-a) TJ Parameter Max Junction-case Thermal Resistance Typical Junction-ambient Thermal Resistance
(Soldered on a 35m thick 45cm PC Board copper area)
2
Value 10 40 120
Unit
o o
C/W C/W
o
8214B-02.TBL
Max Recommended Junction Temperature
C
2/9
8214B-01.TBL
C
TDA8214B
ELECTRICAL CHARACTERISTICS VCC1 = 10V, TAMB = 25oC (unless otherwise specified )
Symbol SUPPLY (Pin 1) ICC1 VCC1 V20 MWF LT11 HT11 BI11 DR11 FLP1 FLP2 OT11 F LV17 OPW V13 Z13 I12 RI12 LI12 CV12 Supply Current Supply Voltage Reference Voltage (I20 = -1A) Minimum Width of Frame Pulse (When synchronized with TTL signal) Low Threshold Voltage High Threshold Voltage Bias Current Discharge Impedance Free Running Line Period (R = 34.9k Tied to VCC1, C = 2.2nF Tied to Ground) Free Running Line Period (R = 13.7K, C = 2.2nF) Oscillator Threshold for Line Output, Pulse Triggering Horizontal Frequency Drift with Temperature (see application) 9 1.4 50 2.8 5.4 1.0 62 15 10 1.75 10.5 2 mA V V s V V nA k s s V Hz/oC Parameter Min. Typ. Max. Unit
VIDEO INPUT (Pin 20)
LINE OSCILLATOR (Pin 11) 3.2 6.6 100 1.4 64 27 4.6 2 3.6 7.8 1.8 66
LINE OUTPUT (Pin 17) Saturation Voltage (I17 = 200mA) Output Pulse width (line period = 64s) Bias Voltage Input Impedance Output Current During Synchro Pulse Current Ratio (positive/negative) Leakage Current Control RangeVoltage Low Level Output when the line syn. tip is centered in the line retrace Without video signal (I8 = -500A) With video signal (I8 = 50A) Low Threshold Voltage High Threshold Voltage LT2 - HT2 Bias Current Discharge Impedance Free Running Frame Period (R = 845k Tied to VCC1, C = 180nF Tied to Ground Minimum Frame Period (I20 = -100A) with the Same RC Free Running Frame Period (R = 408k, C = 220nF) Frame Period Ratio = FFP/MFP Frame Saw-tooth Gain Between Pin 1 and non Inverting Input of the Frame Amplifier Vertical Frequency Drift with Temperature (see application) 27 1.8 4.5 250 0.95 -2 2.60 1.1 29 2.4 5.8 350 1 1.6 31 3.2 8 500 1.05 +2 7.10 V s V k A A V
LINE SAWTOOTH INPUT (Pin 13)
PHASE DETECTOR (Pin 12)
VIDEO IDENTIFICATION (Pin 8) VH8 VL8 LT2 HT2 DIF2 BI2 DR2 FFP1 MFP FFP2 FPR FG F 4.5 6.3 0.6 2.0 3.1 1.0 30 470 23 12.8 14.3 1.8 -0.4 4.10-3 V V V V V nA ms ms ms 1.9
8214B-03.TBL
0.9 2.3 3.6
FRAME OSCILLATOR (Pin 2) 1.6 2.6
300 20.5
700 25
1.7
Hz/oC
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TDA8214B
ELECTRICAL CHARACTERISTICS (continued) VCC1 = 10V, TAMB = 25oC (unless otherwise specified )
Symbol FRAME POWER SUPPLY (Pin 9) V9 I9 VCC2 Operating Voltage (with flyback Generator) Supply Current (V9 = 30V) Operating Voltage 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 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 Output Voltages (R load = 2.2k) 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 Switching level Maximum imput current at VPEAK = 800V Limiting voltage at maximum current RC network time constant (Note 2) 10 11 10 58 22 30 V mA V Parameter Min. Typ. Max. Unit
FLYBACK GENERATOR SUPPLY (Pin 3) FRAME OUTPUT (Pin 10) LV10A LV10B HV10A HV10B FV10A FV10B 0.06 0.37 1.3 1.7 1.6 2.5 0.6 1 1.6 2.4 2.1 4.5 V V V V V V
FLYBACK GENERATOR (Pin 3 and Pin 4) F2DA F2DB FSVA FSVB FCI 1.5 3.0 0.8 2.2 2.1 4.5 1.1 4.5 170 V V V V A
SUPER SANDCASTLE OUTPUT (Pin 19) SANDT2 SANDL2 BG2 SC3 SC2 2 4 8 2.3 3.7 2.5 4.5 9 2.7 4
Note 1
3 5
V V V s s
3.1 5
LINE FLYBACK INPUT (Pin 18)
8214B-04.TBL
2 8 4.3 6
V mA V s
Notes : 1. Width of vertical blanking pulse on SSC output is proportional to the frame flyback time, the switching level is VCC2 - 2VBE and the other input of the comparator is tied to the frame amplifier output. Application circuit uses the frame flyback generator. 2. An RC network is connected to this input. Typical value for the resistor is 27k 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.
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TDA8214B
GENERAL DESCRIPTION The TDA8214B 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 Figure 1 : Synchronization Separator Circuit - A line phase detector and a voltage control oscillator - A super sandcastle generator - Video identification output. The slice level of sync-separation is fixed by value of the external resistors R1 and R2. VR is an internally fixed voltage. 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.
SL1 VR
SL2
20
R1 Video R2
8214B-03.EPS
Figure 2 : Frame Separator
Vz
Q3 Q4
I Vz /2 SL1 3I
ST1
ST2
5/9
8214B-04.EPS
TDA8214B
Figure 3 : Line Oscillator
Vcc1
R5
11
Phase comparator output 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. Figure 4 : Phase Comparator
comparator is an alternatively negative and positive current. The frame sync-pulse inhibits the comparator to prevent frequency drift of the line oscillator on the frame beginning. Figure 5
Vcc1
Line Flyback Integrated Flyback Vc
SL2
12 13
Vc
Sync pulse
ST1
8214B-06.EPS
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
Line output (Pin 17) It is an open-collector output. The output positive pulse time is 29s for a 64s 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.
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8214B-07.EPS
Output Current
8214B-05.EPS
TDA8214B
Figure 6 : Frame Oscillator
Vcc1
INPUT CURRENT COMPENSATION
2
Frame sync pulse
To frame amplifier
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 frame blanking is detected by the frame flyback generator. When the output voltage of the frame amplifier exceeds VCC2-2VBE, the pulse is detected. 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 is referenced to the middle of the line Figure 7 : Super Sandcastle Generator
Line Flyback Input
flyback. This stage will detect the coincidence between the line sync pulse (if present) and a 2s sampling pulse. This 2s pulse is positionned at the center of line sync pulse when the phase loop is locked. This sampled detection is stored by an external capacitor Pin 8. The identification output level is high when video signal is present. Important remark : minimum saw-tooth amplitude on Pin 13 has to be 2VPP (typ. : 2.5VPP).
Vcc1 Line Flyback Detection
18
RC
Frame Output Vcc1
10
YOKE
Frame Blanking Detection
Burst gate pulse generator
19
400 A
SSC Output
RC Network
14
8214B-09.EPS
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8214B-08.EPS
TDA8214B
Figure 8 : Video Identification Circuit (Pin 8)
VH 2.75V Line retrace 12s 5.8k 13 Line Flyback
VR 2.5V
VL 2.25V V CC1 VCC1
Integrated Flyback
VH VR VL
10k Video Ident. Output BC547 10F
Sampling Pulse Line Sync. V R1 Line Sync. without video with video I8
8214B-10.EPS 8214B-11.EPS
1N4148 8
1k
V R1
TYPICAL APPLICATION
Vcc +24V Vcc1 100F 100nF 820k 10k 27k IN4148 BC547 220pF 180nF 10F 47F IN4148 100nF 2.2 2 Video Input 1.5k 120pF 220nF 560k 15k Line Flyback 68pF 22nF 13 22nF 18 12 100k 100k 2.2nF 12nF 22k 22k Horizontal Frequency 2.2k Vcc1 SSC Vertical 100 Amplitude 11 5 6 15 16 19 17 680pF 220nF 22k 100 1 1000F 7 220k 220k 14 10 20 1 8 3 9 4 Video Identification IN4002 4.7 100nF 470F
TDA 8214B
Frame Yoke 30 mH, 15 Ipp = 840mA
270
180pF 4.7k 1F
Vcc1
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TDA8214B
PACKAGE MECHANICAL DATA 20 PINS - PLASTIC POWERDIP
a1
I
b1 E
Z
b e3
B
e Z
D
20
11
F
L
1
10
Dimensions a1 B b b1 D E e e3 F i L Z
Min. 0.51 0.85 0.38
Millimeters Typ.
Max. 1.4
Min. 0.020 0.033 0.015
Inches Typ.
Max. 0.055
0.5 0.5 24.8 8.8 2.54 22.86 7.1 5.1 3.3 1.27
0.020 0.020 0.976 0.346 0.100 0.900
DIP20PW.TBL
0.280 0.201 0.130 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. (c) 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.
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PMDIP20W.EPS

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