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TDA8153
RGB VIDEO OUTPUT AMPLIFIER
. . . . . .
THREE INDEPENDENT VIDEO AMPLIFIERS WITH TYPICAL SR > 1000V/s CRT-CATHODE SENSING OUTPUT FOR SEQUENTIAL SAMPLING INTERNAL G1 VOLTAGE GENERATOR CATHODE SHORT CIRCUIT PROTECTION FLASHOVER PROTECTION OF THE OUTPUT STAGES COMPENSATES POSITIVE AND NEGATIVE TUBE LEAKAGES
DESCRIPTION Realized with a high voltage bipolar technology,the TDA8153 is a monolithic RGB video output stage for TV color applications. It drives the CRT cathodes directly and offers a video bandwidth compatible with CCIR standards. In addition to three independent video amplifiers, the device features an internal generator for the first grid voltage, flashover protection, cathode short circuit protection and a common cut-off sensing output for use in sequential sampling applications. The TDA8153 is supplied in a 15 lead Multiwatt plastic power package. PIN CONNECTIONS
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
MULTIWATT15 (Plastic Package) ORDER CODE : TDA8153
GREEN OUTPUT BLUE FEEDBACK BLUE OUTPUT CUT-OFF VS V REF BLUE INPUT GROUND GREEN INPUT RED INPUT FIRST GRIDE VOLTAGE VH RED OUTPUT RED FEEDBACK GREEN FEEDBAC K
8153-01.EPS
Tab connected to Pin 8
January 1993
1/11
TDA8153
PIN FUNCTIONS
N 1 2 3 4 5 6 7 8 9 10 11 12 Name GREEN FEEDBACK RED FEEDBACK RED OUTPUT VH FIRST GRID VOLTAGE RED INPUT GREEN INPUT Function Feedback Output for 'Green' Amplifier. The optimal value for the resistor connected here to set gain is 68k as shown in fig. 1.2. Other feedback connections are pin 2 (red) and pin 14 (blue). Feedback Output for 'Red' Amplifier. See pin 1. Output of 'Red' Video Amplifier. See pin 15. High Voltage Supply for Amplifier Stages, Typically 200V (see fig. 1.2). Output providing DC voltage for first grid of CRT, typically Vs + VBE.
SCHEMATIC DIAGRAM
4 R25 R26 R27
R1 R2 D4 Q1 D2 D3
Q31
I1
R6 R7 D7 Q7 D5 D6
Q32
I2
R11 R12
Q33
I3
I4
D10 Q13 D8 15 D9 13 Q14 14
3 Q2 2 R3 12 1 R9 Q8
R13
Q5 11
Q11
Q17 5 D11
6
Q4 Q6
7
Q10 Q12
9
Q16 Q15
R4 10
R5
R9
R10
R14
R15
1.6V 8
2/11
8153-02.EPS
8153-01.TBL
13 14 15
Input of 'Red' Video Amplifier. See pin 7. Input of "Green" Video Amplifier. The bias voltage at the inputs is equal to Vref + 2VBE. Other inputs are pin 6 (red) and pin 9 (blue). GROUND Ground Connection (pin 8 is also connected to the tab). BLUE INPUT Input of 'Blue' Video Amplifier. See pin 7. Vref The reference voltage for the three amplifiers is available on this pin. Typical value is 1.6V. The capacitor connected between pin 10 and ground eliminates AC crosstalk between the amplifiers. Supply Voltage Input for Low Voltage Circuitry, typically 12V. Vs SAMPLING Cathode Current Sampling Output. Provides sum of cathode currents for automatic cut-off adjustment with video processors using the sequential system. The three current generators I1, I2 and I3 bias the inputs of this circuit which performs the cut-off adjustment, allowing also adjustment with in flowing CRT leakages. BLUE OUTPUT Output of 'Blue' Video Amplifier. See pin 15. BLUE FEEDBACK Feedback Output for 'Blue' Amplifier. See pin 1. GREEN OUTPUT Output of the 'Green' Video Amplifier. The output is protected against CRT flashovers. Other outputs are pin 3 (red) and pin 13 (blue).
TDA8153
BLOCK DIAGRAM
VS VH
11
4
2 HV OUTPUT RED IN 6 3 CUT-OFF SEN SING VH 1 VS GREEN IN 7 15 CUT-OFF SEN SING VH 14 VS BLUE IN 9 13 CUT-OFF SEN SING REFERENCE VOLTAGE 12 BLUE OUT CUT-OFF SAMPLING HV OUTPUT SHORT CIRCUIT PR OTECT GREEN OUT HV OUTPUT SHORT CIRCUIT PR OTECT RED OUT SHORT CIRCUIT PR OTECT
TDA8153
8153-03.EPS
10
8
ABSOLUTE MAXIMUM RATINGS
Symbol VH VS Ptot VI Tstg, Tj Toper High Voltage Supply Low Voltage Supply Power Dissipation at Tcase = 90C Input Voltage Storage and Junction Temperature Operating Ambient Temperature Parameter Value 250 35 20 Vs - 25, + 150 0, + 70 C C Unit V V W
8153-02.TBL 8153-03.TBL
THERMAL DATA
Symbol Rth (j-c) Parameter Thermal Resistance Junction-case Max Value 3 Unit C/W
3/11
TDA8153
ELECTRICAL CHARACTERISTICS (ref. to test and application circuits, VHT = 200V, VS = 12V, CL = 10pF *, heatsink Rth = 9oC/W, Tamb = 25oC unless otherwise specified)
Symbol VHT VS IHT IS Vref Vg1 Vsat Parameter High Voltage Supply Low Voltage Supply Quiescent Drain Current Quiescent Drain Current Reference Voltage CRT G1 Voltage Supply H Output Saturation Vin = 0, Vdc = - 3V Vin = 0, Vodc = Vsat H Vin = 0, Vodc = Vsat H Test Conditions Pin 4 11 4 11 10 5 3 13 15 3 13 15 12 3 13 15 3 13 15 3 13 15 3 13 15 50 20 4.5 6.5 12 56 25 6.0 8.0 15 80 80 120 120 20 Vo = 100Vpp , Vobl = 150V f = 100kHz, Duty Cycle = 0.5 Vo = 100Vpp ; Vobl = 150V f = 100kHz, Duty Cycle = 0.5 5 5 170 7 1.4 10.8 Min. Typ. 200 12 10 10 1.6 Vs + Vbe VHT -3V Vs Max. 220 13.2 15 17 1.9 Unit V V mA mA V V V Fig. 1-2 1-2 1 1 1 1 1
Vsat
L Output Saturation
Vin = 0, Vdc = 9V
V A V
1
I1, I2, I3 Vodc Quiescent Output Voltage
See schematic diagr. Vin = 0 ; Vodc = 150V Inputs Floating
15 123
20
1 1
Vo Vodc T Vodc T GVo GVc Bw
Peak-to-peak Output Swing
f = 10KHz
Vpp
1
DC Output Voltage versus Temperature DC Differential Voltage versus Temperature Open-loop Gain Closed-loop Gain Video Bandwidth (- 3 dB)
Vodc = 150V Tamb = 0 / 70C Vodc = 150V Tamb = 0 / 70C Vin = 50mVpp, f = 10kHz Vin = 1.5Vpp, f = 10kHz Vobl = 125V, 0dB at f = 100kHz Vo = 80Vpp 50Vpp 10Vpp Vo = 100Vpp ; Vobl = 150V f = 100kHz, Duty Cycle = 0.5 Vo = 100Vpp ; Vobl = 150V f = 100kHz, Duty Cycle = 0.5
0.03 0.015
V/C V/C
1 1
dB dB MHz
1 1 2
tr tf T
Rise Time Fall Time Differential Rise and Fall Time Overshoot Undershoot
ns ns ns % %
2 2 2 2 2
8153-04.TBL
* CL = 10pF is the sum of the P.C. board capacitance (with socket) and the cathode capacitance of the CRT.
4/11
TDA8153
TEST CIRCUIT
R2 +VHT R1 +VS C1 11 2 R3 R4 R5 B IN G IN Vin VDC R IN R8 6 CUT-OFF R11 R10 R12 R9 12 10 C3 GND 8
8153-04.EPS
C2 4 R16 5 R13 13 CL R14 15 9 CL R15 7 3 CL R OUT G OUT B OUT VG1
1 14
R6 R7
5/11
TDA8153
TEST CIRCUIT
R2 GREEN IN R16 R15
+VHT VG1 RED OUT
C2 R4 R7 R11 R12 R6 + R5 R9 CUT OFF C3
R3 R8
R10
RED IN
R14 GREEN OUT R13
BLUE IN +VS GND
R1
BLUE OUT +
C1
6/11
8153-05.TIF / 8153-06.EPS
R1 R2 R3 R4 R5 R6 R7 R8
= 10 = 220 = 68k = 68k = 68k = 3k = 3k = 3k
1/2W 1/2W 1/2W 1/2W
R9 = 47k R10 = 1.8k R11 = 1.8k R12 = 1.8k R13 = 1k R14 = 1k R15 = 1k R16 = 2.2k
1/2W 1/2W 1/2W 1/2W 1/2W 1/2W
C1 = 4F 16V C2 = 100nF 250V C3 = 10F 16V
R2 220-1W
+VHT
R1 10 C2 0.1F 3 C9 100pF 15 C10 100pF 13 C11 100pF
11 4 2 1 14
+VS
APPLICATION CIRCUIT
C1 47F 16V C3 0.1F 250V
C12 68pF R16 2.2k
5
C6 22pF R6 2.2k
9 13
R3 68k 1/2W R4 68k 1/2W R5 68k 1/2W R13 1k-1/2W
P1
B IN C7 22pF
15
G1 R14 1k-1/2W R15 1k-1/2W
7 3
C13 39pF P2 R7 2.2k
G IN C8 22pF R8 2.2k
6
EHT G3
C14 68pF
R9 680
R IN
R17 0.1 2W
12 10 8
R18 10k 2W C5 2.2nF 1kV
CUT-OFF R10 1.8k R11 1.8k R12 1.8k
C4 10F 16V
HG
G2
GND
TDA8153
7/11
8153-07.EPS
TDA8153
APPLICATION CIRCUIT
+VHT
C1 C2
+
GND
F
GND
R17
R14 R13
+VS R1 BLUE IN C12
C11
GND RED IN C4
CUT OFF
P1 C7
+
R7
C10 R11 R12 R6
C14 R9
R10
C3
R18 R3
8153-08.TIF / 8153-09.EPS
C9 R15 C5
G2
C9
C6
P2
R16
C13 R2 GREEN IN
8/11
TDA8153
Figure 1 : Video Bandwith
G(dB) +1 0 -1 -2 -3 -4 -5 -6 -7 f(MHz) 1M 10M -9 100k
8153-10.EPS
VO = 80 V PP VOBL = 125V
-8
Figure 2 : Fall Time
90%
Figure 3 : Rise Time
90%
50 ns/div. ; uncal
50 ns/div. ; uncal
8153-11.EPS
APPLICATION NOTES P. C. Board The best performance of the RGB video amplifier can be obtained only with a carefully designed P.C. board. The layout of the printed circuit must be realized to achieve the best possible symmetry of the three channels. Output to input capacitances are of particular importance. The input-output capacitances, in parallel with the relative high feedback resistances, create poles in the closed loop transfer function. To optimize the band response and to minimize the channels crosstalk a low parasitic capacitance feedback resistors of not inductive type is necessary. Capacitive coupling from the output of an amplifier and the input of another one may induce excessive crosstalk. It is advisable to keep the amplifier outputs away from amplifier inputs. The small size of the P.C. board allows you to mount the TDA8153 directly beside the picture tube socket, to minimize the capacitances of the connections between the video amplifiers and the picture tube cathodes. The capacitors connected in parallel with the input resistors compensate the effects of the distributed constants of the printed circuit on the step response times. Their values must be selected on the basis of the layout and can be considered as function of the printed circuit. The three capacitors (C9, C10, C11) between the amplifier outputs and the feedback resistors reduces the noise effect on the cut-off control, their value, of course, depends on the noise amplitude and spectrum coming from the I.F. video stage. To prevent possible oscillation problems, it is necessary to place the high voltage filter capacitor (C3) as near as possible to the IC ground and the latter must be of a substantial width.
9/11
8153-12.EPS
10%
10%
TDA8153
Power Dissipation Taking as reference the IC internal schematic diagram we can calculate the power dissipated by the video amplifiers. The power dissipation of the IC is defined by a static an a dynamic part. The statically dissipated power is given by :
Vobl2 Vht - Vobl Vobl (Vref + 2V be)2 + PS = 3 Vht -3 -3 Rf Rf Rb R1
white noise output signal with a black level Vob1 = 125V, the total power dissipated by the IC can be measured. It results about PT = 4.8W. With a maximum ambient temperature of 70C and a junction temperature of 150C a 15C/W heatsink is required. Figure 4 : Maximum Allowable Power Dissipation versus Ambient Temperature
Where Rf is the feedback resistance and Rb the input to ground resistance with a black level Vobl = 150V, Vht = 200V, Rf = 68k and Rb = 1.8k we have : PS = 1.75W The dynamic power dissipation has been calculated with a 5MHz, 80Vpp sinusoidal output signal and a load capacitor CL = 10pF with the following expression :
Vop2 Pd = 0.8 Vht (2f CL Vop) - 0.8 = 1.90W 2Rf
The value is reduced by 20% (0.8 factor) because during the flyback time there is not signal. The total power dissipated by the IC is therefore : PT = PS + Pd = 1.75 + 1.90 = 3.65W One of the worst working condition of the TV set as regards the power dissipation, is when you get white noise on the screen, for example, when you disconnect the TV aerial or the channels are not properly tuned. In these cases if we set the TV receiver for 80VPP Figure 5 : Mounting Examples
10/11
8153-14.EPS / 8153-15.EPS
8153-13.EPS
TDA8153
PACKAGE MECHANICAL DATA: 15 PINS - PLASTIC MULTIWATT
Dimensions A B C D E F G G1 H1 H2 L L1 L2 L3 L4 L7 M M1 S S1 Dia. 1
Min.
Millimeters Typ.
Max. 5 2.65 1.6 0.55 0.75 1.4 17.91 20.2 22.6 22.5 18.1 17.75 10.9 2.9 4.6 5.3 2.6 2.6 3.85
Min.
Inches Typ.
Max. 0.197 0.104 0.063 0.022 0.030 0.055 0.705 0.795 0.890 0.886 0.713 0.699 0.429 0.114 0.181 0.209 0.102 0.102 0.152
1 0.49 0.66 1.14 17.57 19.6 22.1 22 17.65 17.25 10.3 2.65 4.2 4.5 1.9 1.9 3.65 0.019 0.026 0.045 0.692 0.772 0.870 0.866 0.695 0.679 0.406 0.104 0.165 0.177 0.075 0.075 0.144
0.039
1.27 17.78
0.050 0.700
17.5 10.7 4.3 5.08
0.689 0.421 0.169 0.200
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.
11/11
MUL15V.TBL
PMMUL15V.EPS

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