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TEA2037A
HORIZONTAL AND VERTICAL DEFLECTION MONITOR
. . . . . . . . .
DIRECT LINE DARLINGTON DRIVE DIRECT FRAME-YOKE DRIVE ( 1A) COMPOSITE VIDEO SIGNAL INPUT CAPABILITY FRAME OUTPUT PROTECTION AGAINST SHORT CIRCUITS PLL HORIZONTAL OSCILLATOR FREQUENCY RANGE FROM 15kHz TO 100kHz VERTICAL OSCILLATOR FREQUENCY RANGE FROM 30Hz TO 120Hz VERY FEW EXTERNAL COMPONENT VERY LOW COST POWER PACKAGE
POWERDIP (8+8) (Plastic Package) ORDER CODE : TEA2037A
DESCRIPTION The TEA2037Ais an horizontal and vertical deflection circuit. It uses the same concept as TEA2117 but optimised for small screens, for a very low cost solution. PIN CONNECTIONS
FRAME OSCILLATOR FLYBACK GENERATOR SUPPLY FRAME FLYBACK GROUND GROUND INVERTING INPUT FRAME POWER SUPPLY FRAME OUTPUT
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
V CC1 VIDEO INPUT LINE OUTPUT GROUND GROUND LINE FLYBACK PHASE DETECTOR
2037A-01.EPS
LINE OSCILLATOR
September 1996
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TEA2037A
BLOCK DIAGRAM
16
1
7
+
POWER STAGE
3
2
4
FRAME OSCILLATOR FRAME-SYNC. OSCILLATOR SEPARATOR
FRAME
FLYBACK GENERATOR
5 12 13
8 6
Yoke
15
INPUT STAGE
PHASE DETECTOR
LINE OSCILLATOR
OUTPUT STAGE
14
TEA2037A
11 10 9
V CC1
2037A-02.EPS
ABSOLUTE MAXIMUM RATINGS
Symbol VCC1 V2 V7 I8nr I8 V14 Ip14 IC14 Tstg Tj Parameter Supply Voltage Flybcak 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 Value 30 35 60 1.5 1 60 0.8 0.4 -40, +150 +150 Unit V V V A A V A A o C o C
THERMAL DATA
Symbol R th (j-c) R th (j-a) Tj Parameter Junction-case Thermal Resistance Junction-ambient Thermal Resistance 2 (soldered on a 35m thick 45cm PC board copper area) Recommended Junction Temperature Max. Typ. Max. Value 15 45 120 Unit C/W o C/W
o o
C
ELECTRICAL CHARACTERISTICS (Tamb = 25oC)
Symbol SUPPLY (shunt regulator) (Pin 16) 9.8 50
2037A-03.TBL
Parameter Supply Current Supply Voltage (ICC1 = 15mA) Voltage Variation (ICC1 : 10mA to 20mA) Starting Threshold for Line Output Pulses
Min. 10 9 -280
Typ.
Max. 20 10.5 +280 5
Unit mA V mV V
ICC1 VCC1 VCC1 LPS 2/9
2037A-02.TBL
2037A-01.TBL
TEA2037A
ELECTRICAL CHARACTERISTICS (Tamb = 25oC) (continued)
Symbol VIDEO INPUT (Pin 15) V15 MWF VIN LT9 HT9 BI9 DR9 FLP1 FLP2 OT9 F LV14 OPW V11 Z11 I10 RI10 LI10 CV10 LT1 HT1 BI1 DR1 FFP1 MFP FFP2 FPR FG F V7 I7 V2 Reference Voltage (I15 = -1A) Minimum Width of Frame Pulse (when synchronized with TTL Signal) Sync Bottom to Black Level (RSYNC 15 = 560k) 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 Fig. 8) 1.4 50 0.2 2.8 5.4 1.0 62 1.75 0.3 3.2 6.6 100 1.4 64 27 4.6 2 3.6 7.8 1.8 66 2 V s VPP V V nA k s s V Hz/ C
o
Parameter
Min.
Typ.
Max.
Unit
LINE OSCILLATOR (Pin 9)
LINE OUTPUT (Pin 14) Saturation Voltage (I14 = 200mA) Output Pulse Width (line period = 64s) Bias Voltage Input Impedance Output Current during Synchro Pulse Current Ratio (positive/negative) Leakage Current Control Range Voltage Low Threshold Voltage High Threshold Voltage Bias Current Discharge Impedance Free Running Line Period (R = 845k Tied to VCC1, C = 180nF Tied to Ground) Minimum Frame Period (I 15 = -100A) (with the same RC) Free Running Line Period (R = 408k, C = 220nF) Frame Period Ratio = Frame Saw-tooth Gain between Pin 1 and non-inverting Input of the Frame Amplifier Vertical Frequency Drift with Temperature (see application Fig. 8) 20 1.8 4.5 250 0.95 -2 2.60 1.6 2.6 300 20.5 1.1 22 2.4 5.8 450 1 1.6 24 3.2 8 800 1.05 +2 7.10 2.3 3.6 700 25 V s V k A A V V V nA k ms ms ms 1.9
LINE FLYBACK INPUT (Pin 11)
PHASE DETECTOR
FRAME OSCILLATOR (PIn 1) 2.0 3.1 30 470 23 12.8 14.3 1.8 -0.4 4 10-3
1.7
Hz/oC
FRAME POWER SUPPLY (Pin 7) Operating Voltage (with flyback generator) Supply Current (V7 = 30V) Operating Voltage 10 58 22 30 V mA V
FLYBACK GENERATOR SUPPLY (PIn 2) 10
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2037A-04.TBL
TEA2037A
ELECTRICAL CHARACTERISTICS (Tamb = 25oC) (continued)
Symbol FRAME OUTPUT (PIn 8) LV8A LV8B HV8A HV8B FV8A FV8B Saturation Voltage to Ground (V7 = 30V) I8 = 0.1 I8 = 1A Saturation Voltage to V7 (V7 = 30V) I8 = -0.1 I8 = -1A Saturation Voltage to V7 in Flyback Mode (V8 > V7) I8 = 0.1 I8 = 1A Flyback Transistor on (output = high state) (V2 = 30V) V3/2 with I3 2 = 0.1A I3 2 = 1A V2/3 with I3 2 = 0.1 I3 2 = 1A Flyback Transistor off (output = V7 - 8V) (V7 = V2 = 30V) Leakage Current Pin 2 0.0.6 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 Parameter Min. Typ. Max. Unit
FLYBACK GENERATOR (Pins 2 and 3) 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
The TEA2037A performs all the video and power functions required to provide signals for the direct drive of the line darlington and frame yoke. It contains : - A shunt regulator - 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 darlington drive - A line phasedetectorand a voltage control oscillator Figure 1 : Synchronization Separator Circuit
The slice level of sync-separation is fixed by value of the external resistors R 1 and R2. VR is an internally fixed voltage. The sync-pulse allows the discharge of the capacitor by a 2 x 1 current. A line sync-pulse is not able to discharge the capacitor underVZ/2. Aframe 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. Figure 2 : Frame Separator
VZ Q3
Q4
I
ST1 VZ/2
ST2
SL1 SL2 VR 15
3I
R1 Video
4/9
2037A-03.EPS
R2
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.
2037A-04.EPS
SL1
2037A-05.TBL
TEA2037A
Figure 3 : Line Oscillator VCC1
Phase Comparator Output
R5
9
R4
Figure 4 : Phase Comparator
Line Flyback
current for the other part. When the line flyback and the video signal are synchronized, the output of the comparatoris an alternativelynegative and positive current. The frame sync-pulse inhibits the comparator to prevent frequency drift of the line oscillator on the frame beginning. Figure 5
Integrated Flyback
VCC1
VC
10
11
Sync Pulse
2037A-06.EPS
Output Current
VC
ST2
5/9
2037A-07.EPS
The sync-pulse drives the current in the comparator. The line flyback integrated by the external network gives on pin 11 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 11 greater than to VC and a negative
ST1
2037A-05.EPS
TEA2037A
Line Output (pin 14) It is an open collector output which is able to drive pulse current of 800mA for a rapid discharging of the darlington base. The output pulse time is 22s for a 64s period. The oscillator thresholds are internally fixed by resistors. The oscillator is synchronized during the Figure 6 : Frame Oscillator
VCC1 INPUT CURRENT COMPENSATION
last half free run period. The input current during the charge of the capacitor is less than 100nA. 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.
1
Frame Sync Pulse
To Frame Amplifier
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2037A-08.EPS
TEA2037A
TYPICAL APPLICATION FOR DISPLAY UNITS Figure 7 : Application without flyback generator and with sync-pulse drive ; yoke : 72mH, 40
VCC 28V 1k VCC1 820k 180nF 1 10k 15 8 16 4 5 12 13 2 7 3 2.2 100nF
100F
TEA2037A
15k 47nF 22nF 11 10 100k 2.2nF 2.2nF 33.2k 3.9k 9 14 VCC 10 470 1/2W 6 220nF 56k 470k 470k
470F
100
2.2F
1F
47
1N4148
Figure 8 : Application with flyback generator and video ; yoke : 72mH, 40
VCC 28V 1k VCC1 820k 1N4003
100F 180nF Video 560k 15
47F 2.2 100nF 1.5k 1 16 4 5 12 13 2 7 3 8 1N4148 100nF
TEA2037A
15k 47nF 22nF 11 10 100k 3.9k 2.2nF 2.2nF 33.2k 9 14 VCC 10 470 1/2W 680pF 6 220nF 56k 470k 470k
470F
100
2.2F
2037A-10.EPS
1F
VCC1 47 1N4148
6.8
1k
7/9
2037A-09.EPS
VCC1
6.8
1k
TEA2037A
TYPICAL APPLICATION FOR HIGH FREQUENCY MONITOR CHARACTERISTICS * Screen : 14'' Colour * Frame deflection yoke : 11mH, 7, 750mA peak-to-peak * VCC = + 14V with flyback generator * Frame flyback time : 0.6ms * Vertical frequency : 72Hz * Vertical free-running period : 16ms (adjustable) * Horizontal frequency : 35kHz (adjustable) * Line flyback time : 5.5s
2.2k VCC 14V 270k VCC1 P3 470k 1000F
* Capture range : 5s (@ sync pulse = 4.7s) * Input signal : negative TTL sync (line + frame) * Dissipated power : 1.4W (heatsink required) * Adjustments : * Vertical amplitude * Vertical Linearity * Vertical frequency * Horizontal frequency
470k
1N4002
100F 150nF
47F 2.2 1N4148 1 10k Sync 15 8 16 4 5 12 13 2 7 3
100nF
Line Flyback
15k 47nF
22nF 11 10 47k
TEA2037A
6
39k
Frame Yoke 11mH/7 47k 68k
9
14 680pF
330nF 18k P1 2.2F Line Darlington
2200F
3.9k
22k
10
22k
1F
P4
220 1/2W
1
6.8nF
1nF
100
VCC
180
2037A-11.EPS
47 VCC1
1N4148
8/9
TEA2037A
PACKAGE MECHANICAL DATA 16 PINS - PLASTIC POWERDIP
Dimensions a1 B b b1 D E e e3 F I L Z
Min. 0.51 0.85 0.38
Millimeters Typ.
Max. 1.40
Min. 0.020 0.033 0.015
Inches Typ.
Max. 0.055
0.50 0.50 20.0 8.80 2.54 17.78 7.10 5.10 3.30 1.27
0.020 0.020 0.787 0.346 0.100 0.700
DIP16PW.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) 1996 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 - Canada - 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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PM-DIP16.EPS

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