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INTEGRATED CIRCUITS
DATA SHEET
TDA3508 Video control combination circuit with automatic cut-off control
Product specification Supersedes data of April 1993 File under Integrated Circuits, IC02 1996 Oct 25
Philips Semiconductors
Product specification
Video control combination circuit with automatic cut-off control
FEATURES * Capacitive coupling of the colour difference and luminance input signals with black level clamping in the input stages * Linear saturation control acting on the colour difference signals * (G-Y) and RGB matrix * Linear transmission of inserted signals * Equal black levels for inserted and matrixed signals * Three identical channels for the RGB signals * Linear contrast and brightness controls, operating on both the inserted and matrixed RGB signals * Peak beam current limiting input * Clamping, horizontal and vertical blanking of the three input signals controlled by a 3-level sandcastle pulse * Three DC gain controls for the RGB output signals (white point adjustment) * Emitter-follower outputs for driving the RGB output stages * Input for automatic cut-off control with compensation for leakage current of the picture tube. ORDERING INFORMATION TYPE NUMBER TDA3508 PACKAGE NAME DIP28 DESCRIPTION plastic dual in-line package; 28 leads (600 mil) GENERAL DESCRIPTION
TDA3508
The TDA3508 is an integrated circuit which performs video control functions in a PAL/SECAM decoder for negative colour difference signals -(R-Y) and -(B-Y). The required input signals are luminance and colour difference and a 3-level sandcastle pulse for control purposes. Linear RGB signals can be inserted from an external source. RGB output signals are available for driving the video output stages. The circuit provides automatic cut-off control of the picture tube.
VERSION SOT117-1
1996 Oct 25
2
Philips Semiconductors
Product specification
Video control combination circuit with automatic cut-off control
QUICK REFERENCE DATA All voltages referenced to pin 24 (ground). SYMBOL VP IP V15(p-p) V18(p-p) V17(p-p) V12,13,14(b-w) V10 supply voltage (pin 6) supply current composite video input signal (pin 15) (peak-to-peak value) -(B-Y) colour difference input signal (pin 18) (peak-to-peak value) -(R-Y) colour difference input signal (pin 17) (peak-to-peak value) inserted RGB signals (black-to-white value) (pins 12, 13 and 14) 3-level sandcastle pulse (pin 10) level 1 level 2 level 3 V20 V19 V16 Tamb control voltage for brightness (pin 20) control voltage for contrast (pin 19) control voltage for saturation (pin 16) operating ambient temperature - - - 1.0 2.0 2.0 0 2.5 4.5 8.0 - - - - - - - PARAMETER - - - - - - MIN. TYP. 12.0 95 0.45 1.33 1.05 1.0
TDA3508
MAX. - - - - - -
UNIT V mA V V V V
V V V V V V C
3.0 4.3 4.3 70
1996 Oct 25
3
handbook, full pagewidth
1996 Oct 25
signal insertion 1 V(b-w) 3 x SIGNAL SWITCH SATURATION CONTROL (R-Y) R MATRIX red BRIGHTNESS CONTROL CONTRAST CONTROL 14 9 8 7 13 12 Y CONTRAST CONTROL (G-Y) MATRIX (G-Y) G MATRIX BRIGHTNESS CONTROL
BLOCK DIAGRAM
Philips Semiconductors
-(R-Y) (1.05 Vp-p)
17
CLAMPING
Video control combination circuit with automatic cut-off control
4.4 V
green
4
SATURATION CONTROL (B-Y) B MATRIX CONTRAST CONTROL Y clamping pulse (1 V) Y AMPLIFIER 4.5 V DRIVER FOR SIGNAL SWITCHES TRESHOLD DETECTOR CURRENT SOURCE
Y
BRIGHTNESS CONTROL
blue
-(B-Y) (1.33 Vp-p)
18
CLAMPING clamping pulse
composite video signal (0.45 Vp-p)
15
CLAMPING
TDA3508 (part A)
10 dB 6 VP (+12 V) 24 16 saturation control voltage (2 to 4.3 V)
2.9 V
11 input for signal switching voltage
25 control input for peak beam current limiting
19 contrast control voltage (2 to 4.3 V)
20 brightness control voltage (1 to 3 V)
MSA736
Product specification
TDA3508
Fig.1 Block diagram (continued in Fig.2).
Product specification
TDA3508
Fig.2 Block diagram (continued from Fig.1).
handbook, full pagewidth
1996 Oct 25
white point adjustment (0 to 12 V) storage capacitors for cut-off control 28 2 CONTROLLED OUTPUT STAGE 1 2 V B/W MR CONTROL AMPLIFIER 3 green 2 V B/W MG COMPARATOR & V/I CONVERTER CONTROLLED OUTPUT STAGE 5 line 21 (1) line 22 (1) line 23 (1) COMPARATOR MB & V/I CONVERTER blue 2 V B/W CONTROLLED OUTPUT STAGE COMPARATOR & V/I CONVERTER red 4 23 CONTROL AMPLIFIER 22 21
Philips Semiconductors
TDA3508 (part B)
red
BLANKING
INSERTION OF BLACK CURRENT MEASURING PULSE
Video control combination circuit with automatic cut-off control
green
BLANKING
INSERTION OF BLACK CURRENT MEASURING PULSE
CONTROL AMPLIFIER
5
control current (3x) + H+V lines 21 (1) clamping pulse lines 21 to 23 (1) COUNTER & PULSE FORMER SWITCHING AND CLAMPING CIRCUIT 27 storage of leakage current information 4.5 V 2.5 V 0
blue
BLANKING
INSERTION OF BLACK CURRENT MEASURING PULSE
clamping pulse
R
G
B
H+V
SANDCASTLE DETECTOR
H
26
10
sandcastle pulse
8V
input for voltage derived from leakage current of RL and cut-off currents (R or G or B)
MSA737
(1) After start of vertical blanking pulse.
Philips Semiconductors
Product specification
Video control combination circuit with automatic cut-off control
PINNING SYMBOL RO CGC GO CBC BO VP CB CG CR SC FSW BI GI RI Y SAT -(R-Y) -(B-Y) CON BRI WPB WPG WPR GND PBL ACO CSL CRC PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 red output green storage capacitor for cut-off control green output blue storage capacitor for cut-off control blue output supply voltage (+12 V) blue storage capacitor for brightness green storage capacitor for brightness red storage capacitor for brightness sandcastle pulse input fast switch for RGB inputs blue input (external signal) green input (external signal) red input (external signal) luminance input saturation control input colour difference input colour difference input contrast control input brightness control input white point adjustment input; blue white point adjustment input; green white point adjustment input; red ground (0 V) control input for peak beam current limiting automatic cut-off control input storage capacitor for leakage current red storage capacitor for cut-off control Fig.3 Pin configuration.
BI 12 GI 13 RI 14
MSA738
TDA3508
DESCRIPTION
handbook, halfpage
RO CGC GO CBC BO VP CB CG CR
1 2 3 4 5 6 7 TDA3508 8 9
28 27 26 25 24 23 22 21 20 19 18 17 16 15
CRC CSL ACO PBL GND WPR WPG WPB BRI CON (B Y) (R Y) SAT Y
SC 10 FSW 11
1996 Oct 25
6
Philips Semiconductors
Product specification
Video control combination circuit with automatic cut-off control
LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL VP Vn V11 V16,19,20 Vn1 I1,3,5 I19 I20 I25 Ptot Tamb Tstg Ves PARAMETER supply voltage on pin 6 input voltage on pins 10, 21, 22, 23, 25 and 26 input voltage on pin 11 input voltage on pins 16, 19 and 20 voltage on pins 1 to 5, 7 to 9, 12 to 15, 17, 18, 27 and 28 output current on pins 1, 3 and 5 input current on pin 19 input current on pin 20 input current on pin 25 total power dissipation operating ambient temperature storage temperature electrostatic handling voltage; pin 10 all other pins Note 1. Equivalent to discharging a 200 pF capacitor via a 0 series resistor. note 1 note 1 -500 -500 CONDITIONS 0 0 -0.5 0 MIN.
TDA3508
MAX. 13.2 VP +3.0 0.5VP V V V V V
UNIT
no external DC voltage - - - -5 - 0 -25 -3 10 5 - 1.7 70 +150 +450 +500
mA mA mA mA W C C V V
1996 Oct 25
7
Philips Semiconductors
Product specification
Video control combination circuit with automatic cut-off control
TDA3508
CHARACTERISTICS VP = 12 V; V12,13,14(p-p) = 1 V; V15(p-p) = 0.45 V; V17(p-p) = 1.05 V; V18(p-p) = 1.33 V; Tamb = 25 C; measured in application circuit of Fig.4; nominal settings of brightness, contrast, saturation and white point adjustment; all voltages referenced to ground (pin 24); unless otherwise specified. SYMBOL Supply (pin 6) VP IP V17(p-p) V18(p-p) I17,18 RI V17,18 V16 supply voltage supply current -(R-Y) input signal (pin 17) (peak-to-peak value) -(B-Y) input signal (pin 18) (peak-to-peak value) input current during scanning input resistance internal DC voltage due to clamping note 2 note 1 10.8 - - - - 1.0 3.8 12.0 95 13.2 125 V mA PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Colour difference inputs (pins 17 and 18) for saturated colour bar with 75% of maximum amplitude for saturated colour bar with 75% of maximum amplitude 1.05 1.33 - - 4.4 1.48 1.88 1.0 - 4.8 V V A M V
Saturation control (pin 16) input control voltages maximum saturation; note 2 nominal saturation 6 dB below maximum; note 2 4.0 2.9 4.2 3.1 2.1 50 - 4.4 3.3 2.3 - 20 V V V dB A
-26 dB saturation referenced 1.9 to maximum; note 2 SATmin I16 minimum saturation input current V16 = 1.8 V 46 -
(G-Y) matrix (see note 3) Luminance input (pin 15) V15(p-p) I15 R15 C15 V15 m composite video input signal (peak-to-peak value) input current during scanning input resistance input capacitance input DC voltage due to clamping linearity note 2 nominal settings - - 0.1 - 2.5 0.85 450 - - - 2.9 - 630 1.0 - 5 3.3 - mV A M pF V
RGB channels SIGNAL SWITCHING INPUT (PIN 11) V11 V11 C11 I11 normal state voltage; no insertion voltage level for insertion on input capacitance input current V11 = 0 to 3 V 0 0.9 - -100 - - - - 0.4 3.0 10 +450 V V pF A
1996 Oct 25
8
Philips Semiconductors
Product specification
Video control combination circuit with automatic cut-off control
SYMBOL PARAMETER CONDITIONS - - 4.0 MIN. TYP.
TDA3508
MAX.
UNIT
SIGNAL INSERTION: RI, GI AND BI (PINS 14, 13 AND 12) V14,13,12(b-w) I14,13,12 V14,13,12 V19 external RGB input signals (black-to-white value) input current during scanning internal DC voltage due to clamping notes 2 and 4 1.0 - 4.5 1.4 1.0 5.0 V A V
Contrast control (pin 19) control voltage maximum contrast; note 2 nominal contrast 3 dB below maximum; note 2 -10 dB below maximum; note 2 CON I19 RGBdiff minimum contrast input current difference between RGB channels referenced to maximum; V19 = 2 V V25 > 6 V contrast -10 dB below maximum 4.0 3.4 2.6 18 - - 4.2 3.6 2.8 21 - - 4.4 3.8 3.0 29 2.0 0.6 V V V dB A dB
Peak beam current limiting (pin 25) V25 R25 I19 internal DC bias voltage input resistance input current at contrast control input V25 = 4.5 V note 2 5.3 - 10 5.5 10 20 5.7 - 34 V k mA
Brightness control (pin 20) V20 I20 Vblk(b-w) control voltage input current shift of black level in the control range referenced to the luminance signal (black-to-white value) tracking Internal signal limiting (RGB) signal limiting referenced to nominal black luminance and nominal black level white White point adjustment (pins 21, 22 and 23); note 2 Gv AC voltage gain V21,22,23 = 5.5 V; note 5 V21,22,23 = 0 V; note 5 V21,22,23 = 12 V; note 5 RI input resistance - -35 +35 - 100 -40 +40 20 - - - - % % % k - 115 -25 120 - 125 % % note 2 no beam current limiting V20 = 1 V 1.0 - - - - 50 3.0 -10 - V A %
95
-
-
%
1996 Oct 25
9
Philips Semiconductors
Product specification
Video control combination circuit with automatic cut-off control
SYMBOL PARAMETER CONDITIONS MIN. TYP.
TDA3508
MAX.
UNIT
RGB outputs (emitter follower; pins 1, 3 and 5) V1,3,5 V1,3,5 V1,3,5 output voltage black level without automatic cut-off control difference in black level between RGB channels due to variation of contrast control cut-off control range internal current source note 2 black-to-white positive V28,2,4 = 10 V; note 2 1.5 6.1 - 2.0 6.9 - 2.5 7.7 10 V V mV
V1,3,5 I1,3,5 V26 V26
4.0 2.0
4.6 3.0 - 0.64
- -
V mA
Automatic cut-off control (pin 26); notes 2, 6, 7, 8 and 9 input voltage voltage difference between cut-off current measurement and leakage current measurement 0 0.5 6.5 0.72 V V
Gain data (at nominal brightness, contrast, saturation and white point settings) Gv1,3,5-15 1,3,5-15 Gv voltage gain with respect to luminance input (pin 15) frequency response of luminance path voltage gain with respect to colour difference inputs (pins 1 to 17 and 5 to 18) frequency response of colour difference paths (pins 1 to 17 and 5 to 18) voltage gain with respect to inserted signals (pins 1 to 14, 3 to 13 and 5 to 12) frequency response of inserted signal paths (pins 1 to 14, 3 to 13 and 5 to 12) rise time of RGB output signals (pins 1, 3 and 5) fall time of RGB output signals (pins 1, 3 and 5) difference in transition times between R, G and B channels delay time between signal switching and signal insertion difference in gain between normal and signal insertion mode fi = 0 to 10 MHz fi = 0 to 2 MHz fi = 0 to 5 MHz 14 - 3 16 - 6 18 3 9 dB dB dB
-
-
3
dB
Gv
4
6
8
dB
-
-
3
dB
tr tf t1,3,5 td Gv1,3,5
- - - -25 -
40 40 0 - -
- - 15 +25 10
ns ns ns ns %
1996 Oct 25
10
Philips Semiconductors
Product specification
Video control combination circuit with automatic cut-off control
SYMBOL PARAMETER CONDITIONS MIN. TYP.
TDA3508
MAX.
UNIT
Sandcastle pulse detector (pin 10) V10 the following amplitudes are required for separating the various pulses horizontal and vertical blanking; notes 10 and 11 required pulses (H + V); note 10 horizontal; note 10 required pulses (H); note 10 clamping; notes 10 and 12 required pulses; note 10 no keying; note 10 I10 Notes 1. Maximum value <110 mA after warm-up. 2. Values are proportional to the supply voltage. 3. Matrixed according to equation V(G-Y) = -0.51V(R-Y) - 0.19V(B-Y). 4. When V11-24 < 0.4 V during clamping time, the black levels of the inserted RGB signals are clamped on the black levels of the internal RGB signals. When V11-24 > 0.9 V during clamping time, the black levels of the inserted RGB signals are clamped on an internal DC voltage (correct clamping of the external RGB signals is possible only when they are synchronous with the sandcastle pulse). 5. When pins 21, 22 and 23 are not connected, an internal bias voltage of 5.5 V is supplied. 6. Automatic cut-off control measurement occurs in the following lines after start of the vertical blanking pulse: a) line 20: measurement of leakage current (R + G + B). b) line 21: measurement of red cut-off current. c) line 22: measurement of green cut-off current. d) line 23: measurement of blue cut-off current. 7. Black level of the measured channel is nominal; the other two channels are blanked to ultra-black. 8. All three channels blanked to ultra-black. The cut-off control cycle occurs when the vertical blanking part of the sandcastle pulse contains more than 3 line pulses. The internal blanking continues until the end of the last measured line. The vertical blanking pulse is not allowed to contain more than 34 line pulses, otherwise another control cycle begins. 9. Input pin 26 switches to ground during horizontal flyback. 10. The sandcastle pulse is compared with three internal thresholds (proportional to VP) and the given levels separate the various pulses. 11. Blanked to ultra-black (-25%). 12. Pulse duration 3.5 s. input current 1.0 2.1 3.0 4.1 6.5 7.6 - - 1.5 2.5 3.5 4.5 7.0 - - - 2.0 2.9 4.0 5.0 7.5 12.0 1.0 -110 V V V V V V V A
1996 Oct 25
11
Philips Semiconductors
Product specification
Video control combination circuit with automatic cut-off control
APPLICATION INFORMATION
-B 18 k 560 820 18 k 560 BF869 -G 820 18 k 560 -R 820
TDA3508
+200 V
22 H 22 F
BF869
BF869 1N4148 1N4148
1N4148 1N4148 1N4148
1N4148
BF423 22 pF(2) +12 V 100 k 1.5 k 1N4148 BF869 BC558 BC558 33 k 100 k 1.5 k BF869 22 pF(2)
BF423 22 pF(2)
BF423
33 k
100 k
1.5 k BF869 BC558
33 k
680
560
10 pF(2)
1.6 k
10 pF(2)
1.6 k
10 pF(2)
1.6 k
BC558 560 dark current 1 nF
B
G
R 180 1 330 nF 2 180 3 330 nF 4 180 25 27 22 F 26 28 330 nF
1N4148
100 pF 56 k
5.6 k
1N4148
+12 V peak beam current limiting (actual value)
1.5 k 100 nF
1N4148 5 24 R 10 k G 10 k B 10 k
+12 V (VP)
22 H 22 F
+12 V (to other circuitry) 6 22 nF 7 22 nF 8 22 nF 9 20 22 23
+12 V
TDA3508
21 180 k 15 k 910 k 56 k brightness 0 to 12 V
sandcastle pulse signal switch pulse
22 nF 10 19 4.7 F 1V 75 B 1 V (b-w) 75 G 1 V (b-w) 75 R 1 V (b-w) 75
(1)
680 k 240 k 22 nF 22 nF
contrast 0 to 12 V -(B-Y) 1.33 V (p-p) -(R-Y) 1.05 V (p-p) saturation 0 to 12 V Y (1 V composite video signal)
11 22 nF 12
(1)
18
17
22 nF
100 k
signal insertion
22 nF 13 22 nF 14 15 1 k 1N4148 +12 V 8.2 k 1N4148 22 F
MSA735
16 56 k 100 nF 22 k 1 k
(1)
(1)
Y delay line
10 k
beam current (actual value)
(1) When supplied via a 75 line. (2) Capacitor value depends on circuit layout.
3.9 k
Fig.4 Typical application circuit diagram using TDA3508; colour difference inputs are negative.
1996 Oct 25
12
Philips Semiconductors
Product specification
Video control combination circuit with automatic cut-off control
PACKAGE OUTLINE
handbook, plastic dual in-line package; 28 leads (600 mil) DIP28: full pagewidth
TDA3508
SOT117-1
seating plane
D
ME
A2
A
L
A1 c Z e b1 b 28 15 MH wM (e 1)
pin 1 index E
1
14
0
5 scale
10 mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT mm inches A max. 5.1 0.20 A1 min. 0.51 0.020 A2 max. 4.0 0.16 b 1.7 1.3 0.066 0.051 b1 0.53 0.38 0.020 0.014 c 0.32 0.23 0.013 0.009 D (1) 36.0 35.0 1.41 1.34 E (1) 14.1 13.7 0.56 0.54 e 2.54 0.10 e1 15.24 0.60 L 3.9 3.4 0.15 0.13 ME 15.80 15.24 0.62 0.60 MH 17.15 15.90 0.68 0.63 w 0.25 0.01 Z (1) max. 1.7 0.067
Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT117-1 REFERENCES IEC 051G05 JEDEC MO-015AH EIAJ EUROPEAN PROJECTION
ISSUE DATE 92-11-17 95-01-14
1996 Oct 25
13
Philips Semiconductors
Product specification
Video control combination circuit with automatic cut-off control
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. 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 Preliminary specification Product specification Limiting values
TDA3508
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. 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 data sheet contains target or goal specifications for product development. This data sheet contains preliminary data; supplementary data may be published later. This data sheet contains final product specifications.
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.
1996 Oct 25
14
Philips Semiconductors
Product specification
Video control combination circuit with automatic cut-off control
NOTES
TDA3508
1996 Oct 25
15
Philips Semiconductors - a worldwide company
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For all other countries apply to: Philips Semiconductors, Marketing & Sales Communications, Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825 (c) Philips Electronics N.V. 1996
Internet: http://www.semiconductors.philips.com
SCA52
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights.
Printed in The Netherlands
537021/1200/02/pp16
Date of release: 1996 Oct 25
Document order number:
9397 750 00968

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