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參數(shù)資料
| 型號(hào)： | TDA9109N |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | LOW-COST DEFLECTION PROCESSOR FOR MULTISYNC MONITORS |
| 中文描述： | 低費(fèi)用偏轉(zhuǎn)處理器多同步監(jiān)測(cè)儀 |
| 文件頁(yè)數(shù)： | 23/32頁(yè) |
| 文件大?。?/td> | 303K |
| 代理商： | TDA9109N |
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OPERATINGDESCRIPTION
(continued)
FortheE/Wpart andthedynamichorizontalphase
controlpart,a sawtooth-shapeddifferentialcurrent
in the followingform is generated:
DI’ = k’
(V
OUT
- V
DCMID
)
Then
I and
I’ are added and converted into
voltagefor the E/W part.
Each of the two E/W components or the two dy-
namic horizontalphase controlonesmay be inhib-
ited by their own I
2
C selectbit.
The E/W parabola is available on Pin 24 via an
Figure 17 :
GeometricCorrections Principle
emitter follower output stage which has to be bi-
ased by an external resistor (10k
to ground).
Sincestable in temperature,the devicecan be DC
coupled with an externalcircuitry.
The vertical dynamic focus is combined with the
horizontalfocus on Pin 10.
The dynamichorizontalphasecontrol drives inter-
nally the H-position, moving the HFLYposition on
the horizontalsawtooth in the range of
±
1.4% T
H
both for side pin balance and parallelogram.
EW Output
EW Amp
Keystone
Sidepin Amp
Parallelogram
Dynamic Focus
Sidepin Balance
Output Current
To Horizontal
Phase
V
DCMID
(3.5V)
2
Vertical Ramp VOUT
V.Focus
Amp
HORIZONTAL
DYNAMIC FOCUS
Parabola
Generator
V
(3.5V)
V
(3.5V)
23
24
10
9
III.6- E/W
EWOUT = 2.5V + K1 (V
OUT
- V
DCMID
) + K2 (V
OUT
- V
DCMID
)
2
K1 is adjustableby the keystoneI
2
C register
K2 is adjustableby the E/W amplitude I
2
C register
III.7- DynamicHorizontal Phase Control
I
OUT
= K3 (V
OUT
- V
DCMID
) + K4 (V
OUT
- V
DCMID
)
2
K3 is adjustableby the parallelogramI
2
C register
K4 is adjustableby the side pin balance I
2
C register
TDA9109/N
23/32
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