ETV/AN95008 Philips Components Video Amplifier Large Jumbo P

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Video Amplifier Large Jumbo Picture Tubes
ETV/AN95008
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Application Note ETV/AN95008
Abstract
This report description video amplifier board that intended display high resolution images Philips large screen picture tubes using video processor TDA4780 integrated video output amplifier TDA6120. bandwidth total amplifier circuit MHz. TDA4780 video controller controlled, offers automatic cut-off control special features like blue stretching gamma control. Note: This report based upon preliminary data sheets build with test samples TDA6120. Modifications after date issue this report possible.
Purchase Philips components conveys license under patent components system, provided system conforms specifications defined Philips.
Philips Electronics N.V. 1996 rights reserved. Reproduction whole part prohibited without prior written consent copyright owner. information presented this document does form part quotation contract, believed accurate reliable changed without notice. liability will accepted publisher consequence use. Publication thereof does convey imply license under patent- other industrial intellectual property rights.
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Application Note ETV/AN95008
APPLICATION NOTE
Video Amplifier Large Jumbo Picture Tubes
ETV/AN95008
Author(s): J.J. Hekker Product Concept Application Laboratory Eindhoven, Netherlands.
Keywords Video Amplifier High Resolution Blue Stretch Gamma Control Cut-off Control
Date: 16th March, 1996 Pages:
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Summary
Application Note ETV/AN95008
This report describes design video amplifier circuit that intended drive Philips picture tubes PCALE large screen Monitor. total video amplifier circuit consists TDA4780 video processor video output stage using three TDA6120 integrated output amplifiers. (-3dB) video bandwidth total amplifier circuit
Note: video amplifier circuit described this report built tested with preliminary
samples TDA6120 output amplifier. this reason this report considered "classified".
Philips Components
Video Amplifier Large Jumbo Picture Tubes
CONTENTS
Application Note ETV/AN95008
INTRODUCTION. VIDEO AMPLIFIER DESIGN. Video Pre-Amplifier. 2.1.1 2.1.2 2.1.3
TDA4780 Video Pre-Amplifier Input Circuit. Sandcastle input. Beam Current Limiting (BCL) TDA6120 Thermal Protection.
Video Output Amplifier. 2.2.1 Power Dissipation TDA6120 Heatsink Design. Calculating power dissipation (static dynamic) TDA6120: Measuring Power Dissipation TDA6120 practise.
Interface between TDA4780 TDA6120.
POWER SUPPLY. Performance Video Amplifier Board.
VIDEO AMPLIFIER BOARD SCHEMATIC DIAGRAMS, LAYOUT PARTS LISTS. Picture Tube Drive. Video Amplifier Board Design. Parts List. Heatsink used Video Amplifier Board.
ACKNOWLEDGMENT. REFERENCES.
APPENDIX SPECIFICATION PINNING INTEGRATED CIRCUITS. APPENDIX SPECIFICATION TIMING ACCEPTED VIDEO DISPLAY MODES.
Philips Components
Video Amplifier Large Jumbo Picture Tubes
LIST FIGURES
Application Note ETV/AN95008
Fig. Illustration cut-off limits power supply. Fig. Video Sandcastle inputs TDA4780 Fig. Beam Current Limiting TDA4780 Thermal Protection TDA6120 Fig. Circuit design TDA6120. Fig. Combining TDA4780 TDA6120. Fig. Power supply video board. Fig. Video Pre-Amplifier Input Signal Fig. Video Pre-Amplifier (TDA4780) Output Fig. Video Output Amplifier (TDA6120) Signal Fig. Video Output Amplifier (TDA6120) Signal Fig. Circuit Connections Picture Tube Fig. Video Amplifier Component Side (Ground Plane Numbers) Fig. Video amplifier with TDA4780 TDA6120 schematic diagram. Fig. Video amplifier component placement (numbers). Fig. Video amplifier component placement (values) Fig. Video amplifier placement (numbers) Fig. Video amplifier placement (values) Fig. TDA4780 placement (Numbers) Enlarged View. Fig. TDA4780 Placement (Values) Enlarged View. Fig. TDA6120 Placement (Numbers) Enlarged View. Fig. TDA6120 Placement (Values) Enlarged View. Fig. Heatsink TDA6120Q
LIST TABLES
TABLE Description TDA4780 Video Processor. TABLE Description TDA6120Q Video Output Amplifier (Preliminary data). TABLE Performance Demands Asymmetrical Video Amplifier.
Philips Components
Video Amplifier Large Jumbo Picture Tubes
INTRODUCTION.
Application Note ETV/AN95008
This report describes video amplifier circuitry incorporating combination video processor TDA47801 TDA61202 integrated video output amplifier. contains circuit diagram, layout parts list. amplifier board designed drive tubes high demanding market monitors*. This means that required bandwidth video amplifier meet following standards: VGA, SVGA, XGA, MUSE other High Resolution sources. split made different video boards. video amplifier board design typical application, using combination TDA4780 (monolithic processor) TDA6120. This combination total bandwidth suitable MUSE, (SVGA with limited performance) HDMAC images. features automatic cut-off control, gamma correction blue stretch. other video amplifier board designed monitor applications, using combination TDA48823 video pre-amplifier TDA6120. This combination total bandwidth (depending cathode swing) suitable VGA, SVGA images.
this report combination TDA4780 TDA6120 TV/VGA applications described. video amplifier board with combination TDA4882 TDA6120 described separately report ETV/AN950074.
Erratum:
With present bandwidth limiting capacitors C40, rise fall time input signals limited better video bandwidth performance, capacitors C40, should reduced value from (limiting rise fall time ns). When this alteration made, speed-up capacitors C101, C201 C301 should reduced value from
High Resolution.
Philips Components
Video Amplifier Large Jumbo Picture Tubes
VIDEO AMPLIFIER DESIGN.
Application Note ETV/AN95008
total video board following design functions parameters realised: (For specification TDA6120, relevant data given appendix table this data based preliminary data sheets test samples TDA6120) Video inputs signal amplitude Luminance input 0.45 1.43 Vpp, selected through Colour difference input -(R-Y) 1.05 -(B-Y) 1.33 Contrast control Brightness control Black level control Automatic cut-off control Gain control control Video Output Stages supply voltage Volt Highest cut-off level Volt (Specification Philips large screen picture tubes) Maximum output swing Volt (120 Volt video drive Volt cut-off adjustment range) Bandwidth minimum Volt (limited bandwidth TDA4780)
video output stage ranges illustrated Fig. connector pinning compatible with other board designs monitor series.
Maximum Output Voltage TDA6120 Ultra Black Range
+200 Vidd +190 Volt +160 Volt
Volt Cut-Off Range +130 Volt
Maximum drive Volt
Minimum Output Voltage TDA6120
Volt Volt
Fig. Illustration cut-off limits power supply.
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Video Pre-Amplifier.
Application Note ETV/AN95008
pinning TDA4780 given appendix table supply voltage Volt.
2.1.1
TDA4780 Video Pre-Amplifier Input Circuit.
2-level sandcastle
100n
-(B-Y) -(R-Y)
100E
100E
100n
TDA4780
100E
100n
SANDC GROUND SUPPLY FSW2
BLNK CLMP SANDC
100E
BAV99 100n
100E
100n
100E
100n
3-level sandcastle
100n
100E
FSW1
100E
100E 100n
100n
100E
150p
100E
150p
150p
100n
R10, R11, (75E) Optional Place
Fig. Video Sandcastle inputs TDA4780
video input signals terminated with ground, Fig. place R10, R12, these resistors usually placed another position inside e.g. input connectors, therefore video board). video signals coupled (100 SMD) inputs TDA4780. Capacitors C40, added limit bandwidth input signal. This allows more optimal design speed-up network input TDA6120) circuit (for this circuit o.a. report ETV/AN930145).
2.1.2
Sandcastle input.
TDA4780 must have two- three-level (selected through sandcastle signal operation. monitors sandcastle generated deflection board suitable, because much delay. Therefore Volt blanking clamping pulses added with resistors form level sandcastle. When monitors used images standard level sandcastle used. sandcastle 3-level) selected with jumper Note: With two-level sandcastle both blanking clamping pulse must present operation. When clamping present, blanking constant blanking required.
Philips Components
Video Amplifier Large Jumbo Picture Tubes
2.1.3
Application Note ETV/AN95008
Beam Current Limiting (BCL) TDA6120 Thermal Protection.
beam current information measured foot winding (see also ETV/AN950066). This information offered through diode resistors (average beam current limiting input) TDA4780. fast acting, slow restoring beam current limiting system made including capacitor (C26). initial level approximately Volt with resistors R16. information clipped with Volt zener prevent overdrive TDA4780 input.
CON9 PIN3 TDA4780 Pin15 1N4148 100E 100E 100n 1N4148
VIDD MPSA92 100n D302 D202 BAV21 D102
VIDD R210 C210 220n Green Video Blue 220u Amp. TDA6120
BAV21 BAV21
BZX79C
100u
MPSA42
Fig. Beam Current Limiting TDA4780 Thermal Protection TDA6120
network with transistors added thermal protection TDA6120. current through resistor good representation total dissipation (Ptot Pdyn Pstat) TDA6120. This information used thermal protection circuit, shown network around pull down contrast level when expected dissipation exceeds certain level. With resistor values indicated Fig. voltage over resistors limited Volt limiting current through approximately mA). This results (with used heatsink Fig. approximately capacitor (C82 optional) used include time constant prevent visible background modulation loop instability.
means this resistor numbered R110, R210 R310 respectively Red, Green Blue output stage.
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Video Output Amplifier.
Application Note ETV/AN95008
video output stage built around TDA6120 integrated video output amplifier. TDA6120 small signal bandwidth large signal bandwidth MHz. peripheral circuit around TDA6120 shown Fig. pinning given appendix table
100n C104
R104C C101 R101 R103 560E 560E
VIN+
OUTC
R113 PR02
R112 220E COMPOSITE D103 BAV21 D101 BAV21
cathode
R110
R102C
2VIN-
C110 100n 200V
VIDD
C109 100n 250V R106
feedback
R107C
OU
C105 C106 220n 220n
Resistors numbered R***C combination resistors e.g. R107C=R107+R44
+13V
IC101 TDA6120
Fig. Circuit design TDA6120.
main features TDA6120 (data based preliminary data sheets test samples TDA6120): Large signal bandwidth Small signal bandwidth Rise/fall time 12.5 Slew rate V/ns Static power dissipation 3.5W Volt supply (each device) Bandwidth independent voltage gain Maximum overall voltage gain over 46dB Differential voltage input Fast cathode current measurement output dark-current control loop. High power supply rejection ratio.
reference TDA6120 (VIN+) Volt, also paragraph 2.3. output voltage TDA6120 fixed with feedback resistor With value resistor ultra black level Volt differential input voltage, output voltage TDA6120 Volt.
Philips Components
Video Amplifier Large Jumbo Picture Tubes
2.2.1 Power Dissipation TDA6120 Heatsink Design.
Application Note ETV/AN95008
circuit described this report, bandwidth video path limited video preamplifier, TDA4780. -3dB bandwidth this MHz. practise this means that maximum worst case condition will reached around with amplitude Volt (The amplitude limited combination bandwidth, beam current limiting voltage output TDA4780). first part this paragraph theory calculating dissipation temperature rise video amplifiers normal conditions (pixel on/off Volt cathode drive voltage, amplitude limited beam current limiting circuit) explained. second part more practical approach driving TDA6120 worst case condition combination maximum output times maximum frequency) used.
Note: These worst case conditions only reached with thermal protection circuit disabled.
Calculating power dissipation (static dynamic) TDA6120:
static dissipation (Pstat) TDA6120 (datasheet) supply currents currents feedback network CRT, calculated with equation (1): and: Vidd 14.7 (from preliminary data) (from preliminary data)
Pstat Watt dynamic dissipation (Pdyn) TDA6120 calculated with equation (2): and: Cint Vo,pp load capacitance Ctube Csocket Csparkgap Cdiode CflashR Ctraces 0.75 feedback capacitance (1.5 effective internal load capacitance estimate) frequency peak peak output voltage Volt normal operation) blanking duty-cycle 0.8)
capacitances indicated above formula educated guess capacitance present board design video amplifier.
then Pdyn Watt
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Thermal parameters TDA6120 heatsink: Rth,j-mb Rth,mb-hs Tj,max Ths, Tamb,tv (473 (368 (338
Application Note ETV/AN95008
(Thermal resistance junction mounting base) (Thermal resistance mounting base heatsink) (Maximum junction temperature) (Maximum temperature heatsink)
With total dissipation 10.4 Watt under normal operating conditions thermal parameters TDA6120, thermal resistance required heatsink maximum temperatures allowed calculated with equations (4).
With (3):
maximum junction temperature allowed 10.4 Watt. This means that thermal resistance heatsink must smaller than K/W.
With (4):
maximum heatsink (board) temperature allowed 10.4 Watt. This means that thermal resistance heatsink must smaller then K/W.
required heatsink area derived from heatsink design nomogram published PHILIPS COMPONENTS7. thermal resistance required heatsink area With this heatsink calculated (equation (3)) maximum junction temperature 10.4 Watt (Tamb °C). board described this report, standard heatsink (shown Fig. used. This heatsink Rth,hs natural convection (3.75 continuous flow). With this heatsink under maximum dissipation (10.4 Watt) heatsink temperature will rise junction temperature
With above results mind recommended that, prevent derating material safety, thermal protection circuit shown Fig. used limit heatsink temperature maximum °C).
verify calculated dissipation temperature behaviour video board, board been tested monitor.
maximum allowed temperature FR-2 printed circuit board material 100°C, FR-3 material 105°C CEM-1 material 120°C. maximum allowed temperature soldering joints 100°C.
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Measuring Power Dissipation TDA6120 practise.
Application Note ETV/AN95008
temperature measurements made with Minolta infrared temperature sensor output stage. output stage physically positioned above BLUE output stage thus suffers from higher ambient temperature. output stage driven Volt output swing pixel frequency; this worst case condition that could reached).
Note: This worst case power dissipation measured with thermal protection circuit disabled beam current limiting circuit enabled.
ambient temperature (Tamb) (open) voltage over resistor R110 Volt, high voltage supply Vidd 189.5 Volt. voltage over resistor R106 Volt, voltage supply 12.1 Volt. temperature heatsink channel
With these practical values supply voltages currents, true dissipation calculated Ptot 10.6 Watt (compare calculated total dissipation MHz/100 10.4 Watt). With above practical measurements, measured ambient temperature Tamb realistic thermal heatsink resistance Rth,hs K/W, theoretical value calculated with equation (7). practise value found. Conclusion: case PC-board TDA6120 junction temperature must protected thermal protection circuit given Fig. With resistor values indicated Fig. heatsink limited limiting voltage over Volt). practise maximum heatsink requirements lower than those calculated under worst case conditions that smaller heatsink used. adapting resistor values thermal protection circuit optimised other heatsink sizes.
Warning: used heatsink must have Rth,hs 11.4 because quiescent Pstat Watt.
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Interface between TDA4780 TDA6120.
Application Note ETV/AN95008
TDA4780 +3.9V
TDA6120
R104C
VIN+ RCOUTC
C104
100n
C101
R101
560E
R103
560E
CATHODE
FEEDBACK
R107C
R102C
OUVIN-
Fig. Combining TDA4780 TDA6120.
output signals TDA4780 between (typical output voltage difference Black White level) maximum Vpp. This means that achieve maximum output amplitude cathode, amplification ratio over must This done choosing value value fixed (for this paragraph 2.2).
POWER SUPPLY.
supply voltages video amplifier board (see also Fig. Volt (100 TDA6120 (high voltage) video drive with series. Volt (100 TDA6120 (low voltage) through D73, Volt zener. Volt (100 TDA4780 supply through (IC1 µA7808) voltage regulator. Volt TDA6120 (reference level) through Volt zener.
VIDD +16V
PR02 7808 100n 100u 820E PR01 R73A R73B R73C NFR25
100n
+3.9
100n
+13V
250V
+200V
100u 100n
100u BZX79C
100u BZX79C
Fig. Power supply video board.
Note: Before connecting video board make sure that both capacitors Volt supply, SMPS board C71, discharged. When this done this result fused (R71) resistor.
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Performance Video Amplifier Board.
Application Note ETV/AN95008
video amplifier board tested monitor. connected signal generator with high performance coaxial cable, terminated video board with ground. four oscilloscope traces obtained with Tektronic Digital Oscilloscope. input signal rise fall times, measured video board with 10:1 probe, shown Fig. link f-3dB bandwidth equation (1), appendix specification video modes.
Fig. Video Pre-Amplifier Input Signal.
Fig. Video Pre-Amplifier (TDA4780) Output.
output signal TDA4780 TDA6120 shown Fig. contrast cathode output voltage swing (black white) Volt (Fig. Volt (Fig. 10), waveform measured using 100:1 Philips probe. output TDA6120 measured cathode.
Fig. Video Output Amplifier (TDA6120) Signal. Volt
Fig. Video Output Amplifier (TDA6120) Signal Volt
difference rise fall times caused speed-up networks. With output voltage swing Volt, fall time (black white) 15.4 rise time 20.1 with overshoot deducted from table appendix these results relate excellent performance pixel frequency down acceptable performance pixel frequency.
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Application Note ETV/AN95008
VIDEO AMPLIFIER BOARD SCHEMATIC DIAGRAMS, LAYOUT PARTS LISTS. Picture Tube Drive.
Electro Magnetic Compatibility reasons, part connections picture tube this picture tube board. Since these lines include Vg1, heater voltage Aquadag connection will clear that precautions must taken prevent flash over energy from destroying sensitive electronics.
FOCY FOCX GREEN BLUE
PR01
220p 500V
AQUA
COMPOSITE
AQUA
Vffg
COMPOSITE
Fig. Circuit Connections Picture Tube
value heater resistor lies between (dependent tube type; example, value found picture tube). recommended optimise resistor optimal heater voltage 6.15 Vrms.
Video Amplifier Board Design.
final design video amplifier board made double sided PC-board. Special efforts have been made keep current loops (carrying high di/dt signals) small possible. This visible copper area shown Fig. Fig. board there option terminate grounds (AQUA, Vffg) same ground (GND) connector means jumpers next capacitor coil L75. With monitor design placement both jumpers gave best results.
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Application Note ETV/AN95008
Fig. Video Amplifier Component Side (Ground Plane Numbers)
Philips Components
Video Amplifier Large Jumbo Picture Tubes
CON14 820E PR01 1N4148 100E PR02 7808 100n 100u R111 R105 150p 150p 100u 100E 100E 100E BAV99 150p 100n 100n 100n 330n 100n BZX79C BAV99 470E 470E 100K SMALL SIGNAL GROUND (TDA4780) 100E 1N4148 MPSA42 LARGE SIGNAL GROUND (TDA6120) MPSA92 220n B-OUT 220n G-OUT 220n R-OUT 470E R107 470E R119 C107 R118 100E R109 C102 R110 R102 100u 100n BZX79C
+30V +16V CLMP Vsync Hsync
+30V +16V
component numbers
R108 C104 100n
R104 C101 R101 R103 560E 560E
Hsync Vsync SANDC n.c. BLNK
CON9
D103 BAV21
R113 PR02
100u 100n
IC101 TDA6120
R112 220E COMPOSITE D101 BAV21
FOCX FOCY
100E
100n 100E 100E 100n 100n 100n 100n 100n 100n
100E
200V
C105 220n C110 100n 200V
D102 BAV21 C109 100n 250V
AQUA
100E 100E 100E
TDA4780
200V
R106 C106 220n +13V C111 220p
NFR25 250V
CON8
CON10SUB
+16V +30V
Green component numbers Blue component numbers
200V
PR01
COMPOSITE
VIDSUP N.C. +16V +30V Vff-GND AQUA Hflyb
100n +13V 100n 220p COMPOSITE R73A R73B R73C 3x120E BZX79C 100u
CON10 Optional Place
PR37322 J.J.H. 1996 Product Concept Applcation Laboratory Eindhoven
220u
+16V
Fig. Video amplifier with TDA4780 TDA6120 schematic diagram.
R210
D202
HEAT2
IC101
D201
R213
IC201
R112
D103
R212 C109
R113
R312
AQUA
GREEN
R313
IC301
D101
D303
D301
CON10
PRODUCT CONCEPT APPLICATION PCALE LABORATORY PR37322 EINDHOVEN
CON14
CON8
CON9
BLNK N.C. SAND
CLMP +16V +30V
AQUA Vffg +30V +16V N.C. VIDD
R73A R73C R73B
BNC1 BNC2 BNC3
C209 HEAT1
D203
PRODUCT CONCEPT EINDHOVEN APPLICATION LABORATORY JUNE 1996 PR37322
PR37322
BLUE
C111 C211 C311
R110 D102 HEAT3
C309 R310 D302
Fig. Video amplifier component placement (numbers).
CON10SUB
100n
Philips Components
250V
BAV21
22373RP
PR02
BAV21
BAV21
PRODUCT CONCEPT EINDHOVEN APPLICATION LABORATORY JUNE 1996 PR37322
BLUE
220p 220E
PR02
220p
TDA6120Q
220E
TDA6120Q
Video Amplifier Large Jumbo Picture Tubes
220p
100n
250V
BAV21
820E
470E 470E
PR02
100u
BZX79C6V8
220E PR02
PRO2
BZX79C3V9
uA7808
BAV21
BAV21
100u
TDA4780
100u
100E
100E
100E
100E
100E
10-PIN
220p
100E
100E 6-PIN
NFR25
220u
100n PR01
1N4148
TPECNOC TCUDORP NOITACILPPA PCALEOBAL YROTAR PR37322 NEVOHDNIE
100E
7-PIN 10-PIN
9-PIN
BLNK N.C. SAND
CLMP +16V +30V
AQUA Vffg +30V +16V N.C. VIDD
1N4148
Application Note ETV/AN95008
MPSA42
BZX79C13V
100u
Fig. Video amplifier component placement (values)
100E
100E
100n
250V
TDA6120Q
100E
470E
GREEN
BAV21 BAV21
BAV21 250V MPSA92
100E
100E
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Application Note ETV/AN95008
PR37322
C210 C206
C207 R218
R209
R206
C205 C202
R205
R202
R211
R204 R203
R208 C204
R219
R207
C104
R105
C304
R108
C101 R101
C301 R301
R107
R118
C107
R318
R103 R111 R102 R104
R305
R308
R311 R302
R304
R109
C102
R309
C302
C105 C106
C110
C305 C306 C310
R106
R306
C307
R119
R303
R319
R307
PRODUCT CONCEPT APPLICATION LABORATORY EINDHOVEN
Fig. Video amplifier placement (numbers)
R201 C201
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Application Note ETV/AN95008
PR37322
100n
100n
100n 200V
100n
100n 220n 680p 220n 100n 100n 100n
470n 470n
560E
100n
100n
150p 150p 150p
470E
100k
330n
BAV99
560E
100n 100n
100n
100n
100n
470E
560E
560E
560E
560E
470E
100n 470n 470n 200V
470n 470n
100n 200V
PRODUCT CONCEPT APPLICATION LABORATORY EINDHOVEN
100n
Fig. Video amplifier placement (values)
BAV99
100n
100u
220n
100n
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Application Note ETV/AN95008
CONCEPT
Fig. TDA4780 placement (Numbers) Enlarged View.
100n
100n
100n
100n
220n 220n 220n
100k 330n
BAV99
100n 100n 100n 100n
680p
BAV99
100n
100n
100n
100n
100n
CONCEPT
150p 150p 150p
100u
Fig. TDA4780 Placement (Values) Enlarged View.
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Application Note ETV/AN95008
C210 C206
C207 R218
C205
C202
R202
R209
R206
R205
R219
R203
R211
R204
R208 C204
R207
R201 C201
Fig. TDA6120 Placement (Numbers) Enlarged View.
100n 200V
470n 470n
560E
100n
470E
560E
Fig. TDA6120 Placement (Values) Enlarged View.
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Diodes Component D101 D102 D103 D201 D202 D203 D301 D302 D303 Integrated Circuits Component value MPSA92 MPSA42 type value 1N4148 BZX79C3V9 BZX79C6V8 BAV99 BZX79C13V type DO35 DO35 DO35 SOT23 DO35
Application Note ETV/AN95008
Parts List.
VIDEO AMPLIFIER LARGE JUMBO PICTURE TUBES PR37322
n.c. 9330-839-90153 9331-176-90153 9331-177-50153 9332-153-70212 9331-178-30133
Number
BAV21
DO35
9331-892-10153
n.c.
Number
Integrated Circuits Component IC101 IC201 IC301 Miscellaneous Component BNC1 BNC2 BNC3 CON8 CON9 CON10B CON10 CON14 SOCKET value Wire 3-pin jumper Wire Wire Coax terminator 10-PIN 9-PIN 10-PIN 6-PIN 7-PIN DAF-SOCKET type Wire Wire Wire Legs vertical mount CON10 CON9 CON10 CON6 CON7 COIL CRT_DAF n.c. Number value µA7808 TDA4780 TDA6120Q type Volt regulator pre-amplifier Video output amplifier n.c. Number
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Application Note ETV/AN95008
PARTS-LIST VIDEO AMPLIFIER LARGE JUMBO PICTURE TUBES PR37322 Electrolytic Capacitors Component Electrolytic Capacitors (SMD) Component Film Capacitors Component C109 C209 C309 Ceramic Capacitors Component C111 C211 C311 value 220p range 500V n.c. 2222-655-03221 Number value 100n 100n range 250V n.c. 2222-370-??104 2222-370-35104 Number value 100u type n.c. Number value 100u 220u range 250V n.c. 2222-037-90047 2222-044-63109 2222-037-56221 Number
Ceramic Capacitors (SMD) Component C104 C204 C304 C101 C201 C301 C102 C202 C302 C105 C106 C205 C206 C305 C306 C107 C207 C307 C110 C210 C310 value type n.c. Number
100n 100n 330n 220n 470n 100n 200V
C0805 C1206 C1210 C1206 C0805 C1206 C1812 C0805 C0805 C1210 C0603 C1812
2222-910-16649 2222-591-16641 2222-882-16663 2222-591-16647 2222-861-12478 2222-591-16645 2222-???-????? 2222-861-12229 2222-???-????? 2222-882-16558 2222-???-????? 2222-944-16649
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Application Note ETV/AN95008
Resistors (SMD) Component
PARTS-LIST VIDEO AMPLIFIER LARGE JUMBO PICTURE TUBES PR37322 value type n.c. Number
R102 R104 R105 R108 R202 R204 R205 R208 R302 R304 R305 R308 R101 R103 R201 R203 R301 R303 R106 R206 R306 R107 R207 R307 R109 R111 R118 R119 R209 R211 R218 R219 R309 R311 R318 R319
place (Optional 75E) 100k
R0805 R0805 R0805 R0805 R0805 R0805
2322-730-??759 2322-730-??759 2322-730-??153 2322-730-??102 2322-730-??223 2322-730-??104
560E 470E
R0805 R0805 R0805 R1206 R1206
2322-730-??109 2322-730-??009 2322-730-??561 2322-710-??339 2322-710-??471
R0603
2322-730-?????
Resistors (Standard, Non-Flammable Power) Component R73A R73B R73C R110 R210 R310 R112 R212 R312 R113 R213 R313 value 820E 100E 100E 470E 220E type PRO2 PR01 SFR16 SFR16 SFR25 SFR16 SFR16 NFR25 SFR25 PR01 Carbon Composite Carbon Composite SFR16 SFR16 SFR16 SFR16 SFR16 Carbon Composite PR02 n.c. 2322-1??-??229 2322-193-??821 2322-180-??109 2322-180-??101 2322-181-??101 2322-180-??471 2322-180-??472 2322-205-??109 2322-181-??689 2322-193-??568 Number
2322-180-??102 2322-180-??103 2322-180-??105 2322-180-??392 2322-180-??479 2322-1??-??183
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Overview used components numerical order.
Capacitors C101 C102 C104 C105 C106 C107 C109 C110 C111 C201 C202 C203 C204 C205 C207 C209 C210 100u 100n 100n 100n 100n 100n 100n 100n 100u 100n 100n 100n 100u 100n 100n 330n 100n 220n 100n 220n 220n 100u 250V 100n 100u 220p 220u 100n 100n 470n 470n 100n 250V 100n 200V 220p 470n 100n 470n 100n 250V 100n 200V Capacitors (continued) C211 C301 C302 C304 C305 C306 C307 C309 C310 C311 Connectors BNC1 Coaxial Terminator BNC2 Coaxial Terminator BNC3 Coaxial Terminator CON8 10-PIN CON9 9-PIN CON10B 10-PIN CON10 6-PIN CON14 7-PIN Diodes D101 D102 D103 D201 D202 D203 D301 D302 D303 1N4148 BZX79C3V9 BAV99 BZX79C6V8 1N4148 BAV99 BZX79C13V BAV21 BAV21 BAV21 BAV21 BAV21 BAV21 BAV21 BAV21 BAV21 220p 100n 470n 470n 100n 250V 100n 200V 220p Resistors R73A R73B R73C PRO2 820E PR01 Optional Optional Optional 100k 100E 100E 100E 100E 100E 100E 100E 100E 100E 100E 100E 470E 470E 470E 100E NFR25 PR01
Application Note ETV/AN95008
Resistors (continued) R101 R102 R103 R104 R105 R106 R107 R108 R109 R110 R111 R112 R113 R118 R119 R201 R202 R203 R204 R205 R206 R207 R208 R209 R210 R212 R213 R218 R219 R301 R302 R303 R304 R305 R306 R307 R308 R309 R310 R311 R312 R313 R318 R319 Transistors MPSA92 MPSA42 100E 560E 560E 470E 220E PR02 560E 560E 470E 220E PR02 560E 560E 470E 220E PR02
Integrated Circuits IC101 IC201 IC301 Wire Wounds µA7808 TDA4780 TDA6120Q TDA6120Q TDA6120Q
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Application Note ETV/AN95008
Heatsink used Video Amplifier Board.
37.5
11.5 8.75 11.1
8.75 11.1
15.2
MEASUREMENTS
Fig. Heatsink TDA6120Q
heatsink shown Fig. standard heatsink that found with most manufacturers. drilled holes taped with
Philips Components
Video Amplifier Large Jumbo Picture Tubes
ACKNOWLEDGMENT.
Application Note ETV/AN95008
This project done with help following people: v.d. Zanden v.d. Linden Teuling Hulshof Mounting boards demo board assembly Mounting boards demo board assembly Consultancy Consultancy
REFERENCES.
TDA4780 IC02b 1995 TDA6120 DATASHEET TDA4882 IC02b 1995 ETV/AN95007 video processor with automatic cut-off control gamma adjust Video Output Amplifier
Advanced monitor video controller
Video Amplifier Monitor with TDA4882 TDA6120 J.J. Hekker Scan Velocity Modulation HDTV Monitors H.J.C. Large Screen Deflection Board J.J.M. Hulshof
ETV/AN93015
ETV/AN95006
Technical Long-life mounting l.f. power transistors, Publication PHILIPS COMPONENTS Technical Publication
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Application Note ETV/AN95008
APPENDIX SPECIFICATION PINNING INTEGRATED CIRCUITS.
TDA4780.
TDA4780 monolithic integrated circuit with luminance colour difference interface video processing receivers. primary function process luminance colour difference signals. required inputs are: luminance negative colour difference signals. 3-level sandcastle pulse internal timing pulse generation. data clock signals. TABLE Description TDA4780 Video Processor.
Function Fast switch input select RGB1 select RGB2 control bits FSDIS2,FSON2 input Parameters Function Average beam current limiting input start brightness reduction start contrast reduction Peak limiting storage capacitor start brightness reduction start contrast reduction Storage capacitor leakage current compensation Peak dark storage capacitor Cut-off measurement input maximum charge/discharge current BLUE output black white maximum output current amplitude Blue cut-off storage capacitor GREEN output black white maximum output current amplitude Green cut-off storage capacitor BLUE output black white maximum output current amplitude Blue cut-off storage capacitor Y-output/hue adjust output YEXH (DAC 28HEX YEXH output voltage serial data input/acknowledge output 0.85 1.15 0.05 5.50 -0.1 Volt nominal typical Volt nominal typical Volt nominal typical Volt Parameters
GREEN input BLUE input Supply Voltage Supply Current Colour Difference -(B-Y) colour Colour Difference -(R-Y) colour Luminance input control control Ground input
1.33
1.05
0.45 1.43 Ground
GREEN input BLUE input
Fast switch input select select RGB1 control bits FSDIS1,FSON1
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Sandcastle pulse input Horizontal vertical blanking Horizontal pulses serial clock input
Application Note ETV/AN95008
-0.1 Volt
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Application Note ETV/AN95008
sets colour signals also inserted. TDA4780 control parameters functions with automatic cut-off control picture tube cathode currents. provides output signals video output stages. clamped output mode also used source. TDA4780 offers separate video input channels (-3dB) bandwidth MHz.
TDA6120.
TDA6120QQ single 30MHz/120Vpp monolithic video output amplifier DBS13P (Dil Bended pins Power) package SOT141RDG using high-voltage DMOS technology, intended drive cathodes High Definition TV's monitors. TDA6120 video output amplifier with small signal Volt swing) bandwidth large signal (125 Volt swing) bandwidth MHz. TABLE Description TDA6120Q Video Output Amplifier (Preliminary data).
Function RCVINRC+ VIN+ OUGround n.c. Vidd n.c. OUTC
Description inverting input pre-emphasis network inverting voltage input non-inverting input pre-emphasis network non-inverting voltage input feedback current input supply voltage cathode current measurement output power ground heatsink high supply voltage cathode output feedback current output (Rfb
typical
2Vbe
unit
Vidd-10
Philips Components
Video Amplifier Large Jumbo Picture Tubes
Application Note ETV/AN95008
APPENDIX SPECIFICATION TIMING ACCEPTED VIDEO DISPLAY MODES.
With following formula desired picture performance (fall time, black white transition time) calculated (with 0.35). results shown table TABLE Performance Demands Asymmetrical Video Amplifier.
Resolution Pixel Frequency Video Response
Excellent Pixel Frequency (MHz) tfall (ns) 14.00 10.29 8.75 6.48 6.36 4.73 9.72 7.29 7.00 5.22 5.07 3.80 7.61 5.74 5.47 4.12 3.98 2.97 3.54 2.65
Medium 0.75) tfall (ns) 18.62 13.73 11.67 8.64 8.47 6.31 12.96 9.72 9.33 6.96 6.76 5.07 10.14 7.64 7.29 5.49 5.30 3.95 4.71 3.54
Acceptabl 0.5) tfall (ns) 28.00 20.59 17.50 12.96 12.73 9.46 19.44 14.58 14.00 10.45 10.14 7.61 15.22 11.48 10.94 8.24 7.95 5.93 7.07 5.30
Mode
Pixels (Hor Vert)
Vertical Frequency (Hz)*
Horizontal Frequency (kHz) 31.5 31.5 35.4 35.4 35.5 35.5
(16:9)** (16:9) (16:9) SVGA SVGA (16:9) SVGA SVGA (16:9) SVGA SVGA (16:9) (16:9) (16:9) (16:9) HVGA HVGA(16:9)
1067 1067 1067 1024 1365 1024 1365 1024 1365 1152 1536
When then interlaced mode, others non-interlaced 16:9 means square pixels 16:9 aspect ratio picture tube.
Philips Components
Video Amplifier Large Jumbo Picture Tubes
WIDE* 1848 1040 31.5 4.79
Application Note ETV/AN95008
6.39 9.59
WIDE mode computer graphics version HDTV mode. This mode specifically suitable display example high resolution Photo images.

ETV/AN95008 Philips Components Video Amplifier Large Jumbo P

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