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參數(shù)資料
| 型號(hào)： | TDA9106A |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | LOW COST DEFLECTION PROCESSOR FOR MULTISYNC MONITORS |
| 中文描述： | 低成本多頻監(jiān)聽音箱偏轉(zhuǎn)處理器 |
| 文件頁(yè)數(shù)： | 24/30頁(yè) |
| 文件大?。?/td> | 317K |
| 代理商： | TDA9106A |
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“ HorizontalControlledJitter”on therelativegroundof PLL2capacitorwherethis“controlledjitter”frequency
type will directly affect the horizontal position.The amplitude of the signal is I
2
C adjustable.
One point to notice is :
- in case H-Moire is not necessary in the applica-
tion, H-Moire output(Pin 2) can be turnedto as a
5 bits digital to analog converter output (0.3V to
2.2V V output voltage),
- in case of no use in application,this pin mustbe
left high impedance(orresistor to ground).
OPERATINGDESCRIPTION
(continued)
III - VERTICAL PART
III.1- GeometricCorrections
The principle is representedin Figure21.
Startingfrom the verticalramp, a parabolashaped
current is generated for E/W correction, dynamic
horizontal phase control correction, and vertical
dynamicFocus correction.
The base of the parabola generator is an analog
multiplier the output current of whichis equalto :
I = k
(V
OUT
- V
DCOUT
)
2
Where Vout is the vertical output ramp, typically
comprisedbetween2and5V,Vdcoutisthevertical
DC output adjustablein the range 3.2V
≥
3.8V in
orderto generateadissymetricparabolaif required
Figure 21 :
GeometricCorrections Principle
(keystoneadjustment).
Corner and Corner Balance corrections may be
added to the E/Wone. Theseare respectively3rd
and 2nd order waveforms.
In order to keep a good screen geometry for any
end userpreferencesadjustmentwe implemented
the “geometry tracking”.
Due to large output stages voltage range (E/W,
FOCUS), the combinationof trackingfunctionwith
maximum vertical amplitude max or min vertical
position and maximum gain on the DAC control
mayleadto theoutputstagessaturation.Thismust
be avoided by limiting the output voltage by apro-
priate I
2
C registersvalues.
ForE/WpartandDynamicHorizontalphasecontrol
part, a sawtooth shaped differential current in the
followingform is generated:
I’= k’
(V
OUT
- V
DCOUT
)
2
Then
I and
I’ are addedtogetherand converted
into voltagefor the E/W part.
Each of the four E/W components or the two Dy-
namicHorizontalphasecontrolonesmay beinhib-
ited by theirown I
2
C selectbit.
EWOutput
EWamp
Keystone
Corner
CornerBalance
Sidepinamp
Parallelogram
VerticalDynamic
FocusOutput
SidepinBalance
OutputCurrent
To Horizontal
Phase
VDCOUT
VDCIN
2
VDCOUT
VDCOUT
VMID
VerticalRamp V
OUT
VerticalRamp V
OSC
31
32
9
TDA9106A
24/30
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