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參數(shù)資料
| 型號(hào)： | TDA9103 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Deflection Processor for Multisync Monitor(用于多路同步監(jiān)控器的偏轉(zhuǎn)處理器) |
| 中文描述： | 偏轉(zhuǎn)處理器的多頻顯示器（用于多路同步監(jiān)控器的偏轉(zhuǎn)處理器） |
| 文件頁數(shù)： | 17/27頁 |
| 文件大?。?/td> | 305K |
| 代理商： | TDA9103 |
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Analog.
Multiplier
E/W-CENT
E/W-AMP
Vertical Ramp
or
I
38
37
36
9
Figure 21 :
ParabolaGenerationPrinciple
PARABOLA GENERATION FOR EAST-WEST
CORRECTION
(seeFigure 21)
Starting from the vertical ramp a parabolais gen-
erated for E/W correction.
The core of the parabola generator is an analog
multiplier which generatesa current in the form :
I = k (V
RAMP
- V
MID)2
Where V
RAMP
is the vertical ramp, typically com-
prised between2and5V,V
MID
isa DCvoltage with
a nominalvalueof 3.5V,butadjustableintherange
3.2V
→
3.8V in order to generate a dissymmetric
parabola if required (keystone adjustment).
The current is converted into voltage through a
variable gain transresistance amplifier. The gain,
controlledby the voltageonPin 37(E/W-AMP)can
be adjustedin the ratio 3/1.
The parabola is available on Pin36 by the way of
an emitter follower which has to be biased by an
externalresistor(10k
). ItmustbeACcoupledwith
external circuitry.
The typical parabola amplitude (AC), with the DC
control voltages V
37
and V
38
set to 4V, is 2V.
It is important to note that the parasitic parabola
during the discharge of the vertical oscillator ca-
pacitoris suppressed.
VERTICAL PART
(see Figure 22)
The vertical part generatesafixed amplitude ramp
which can be affected by a S correction shape.
Then,theamplitudeofthisrampisadjustedtodrive
an externalpower stage.
The internalreference voltageused for the vertical
part is available between Pin 26and Pin24. It can
be usedasvoltagereferenceforanyDCadjusment
to keep a high accuracy to each adjustment. Its
typicalvalue is :
V
26
= V
REF
= 8V.
The charge of the external capacitor on Pin 27
(V
CAP
) generates a fixed amplituderamp between
the internal voltages, V
L
(V
L
= V
REF
/4) and V
H
(V
H
= 5/8
V
REF
).
V
REF
Osc
Cap
R
19R
Sampling
Cap
V
REF
S Correction
VERT-OUT
VERT-AMP
Parabola
Generator
EW-AMP
KEYST
EW-OUT
OSCIL
SYNCHRO
V-SYNC
Disch.
Charge Current
Transconductance
Amplifier
27
25
34
38
37
36
31
30
28
29 S-CENTER
S-AMP
9
Figure 22 :
Vertical Part BlockDiagram
TDA9103
17/27
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TDA9105A | DEFLECTION PROCESSOR FOR MULTISYNC MONITORS |
| TDA9105 | Deflection Processor for Multisync Monitors(偏轉(zhuǎn)處理器) |
| TDA9106A | LOW COST DEFLECTION PROCESSOR FOR MULTISYNC MONITORS |
| TDA9106 | LOW COST DEFLECTION PROCESSOR FOR MULTISYNC MONITORS |
| TDE1737 | Interface Circuit - Relay and Lamp-Driver(接口電路(單片放大器驅(qū)動(dòng)繼電器和電子管)) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA9105 | 制造商:Panasonic Industrial Company 功能描述:IC |
| TDA9105A | 制造商:Panasonic Industrial Company 功能描述:IC |
| TDA9106 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW COST DEFLECTION PROCESSOR FOR MULTISYNC MONITORS |
| TDA9106A | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW COST DEFLECTION PROCESSOR FOR MULTISYNC MONITORS |
| TDA9108 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:MONITOR HORIZONTAL PROCESSOR |
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