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參數(shù)資料
| 型號： | TDA9109A |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | LOW-COST I2C CONTROLLED DEFLECTION PROCESSOR FOR MULTISYNC MONITOR |
| 中文描述： | 低費(fèi)用的I2C可控?fù)隙榷嗤斤@示器處理器 |
| 文件頁數(shù)： | 36/47頁 |
| 文件大?。?/td> | 509K |
| 代理商： | TDA9109A |
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TDA9109A
36/47
For the E/W part and the dynamic horizontal
phase control part, a sawtooth-shaped differential
current in the following form is generated:
I’ = k’
.
(
V
OUT
-
V
DCMID
)
Then
I and
I’ are added and converted into volt-
age for the E/W part.
Each of the two E/W components or the two dy-
namic horizontal phase control components may
be inhibited by their own I
2
C select bit.
The E/W parabola is available on Pin 24 via an
emitter follower output stage which has to be bi-
ased by an external resistor (10
k
to ground).
Since stable in temperature, the device can be DC
coupled with external circuitry.
The vertical dynamic focus is combined with the
horizontal focus on Pin 10.
The dynamic horizontal phase control drives inter-
nally the H-position, moving the HFLY position on
the horizontal sawtooth in the range of
±
2.8 %T
H
both for side pin balance and parallelogram.
Figure 17. Geometric Corrections Principle
3.5 E/W
EWOUT = EW
DC
+ K1
(
V
OUT
-
V
DCMID
) +
K2
(
V
OUT
-
V
DCMID
)
2
+ K3
(
V
OUT
-
V
DCMID
)
4
K1 is adjustable by the keystone I
2
C register.
K2 is adjustable by the E/Wamplitude I
2
C register.
K3 is adjustable by the E/W corner I
2
C register.
3.6 Dynamic Horizontal Phase Control
I
OUT
= K4 (V
OUT
-
V
DCMID
) + K5 (V
OUT
-
V
DCMID
)
2
K4 is adjustable by the parallelogram I
2
C register.
K5 is adjustable by the side pin balance I
2
C regis-
ter.
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