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| TDA4856 Datasheet, PDF (44/56 Pages) NXP Semiconductors – I2C-bus autosync deflection controller for PC monitors | |||
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Philips Semiconductors
I2C-bus autosync deï¬ection controller for
PC monitors
Product speciï¬cation
TDA4856
handbook, full pagewidth
VXRAY
VHUNLOCK
X-ray latch triggered
BDRV duty cycle
HDRV duty cycle
floating
floating
MGS281
Fig.26 Activation of soft-down sequence via pin XRAY.
Vertical linearity error
handbook, halfpIaVgOe UT(1)
(µA)
+415
0
â415
I1(2)
MBG551
I2(3)
I3(4)
VVCAP
Horizontal focus pre-correction
handbook, halfpage
(1)
(2)
(1) IVOUT = IVOUT1 â IVOUT2.
(2) I1 = IVOUT at VVCAP = 1.9 V.
(3) I2 = IVOUT at VVCAP = 2.6 V.
(4) I3 = IVOUT at VVCAP = 3.3 V.
Which means: I0 = I--1----2â-----I--3-
Vertical linearity error =
1 â max

ï£
-I-1----Iâ--0---I--2-
or
I--2----Iâ--0---I--3-
Fig.27 Definition of vertical linearity error.
MGS282
tprecor = 450 ns
tprecor = 300 ns
(1) Line flyback pulse at HFLB (pin 1).
(2) Horizontal focus parabola at FOCUS (pin 32).
Fig.28 Definition of horizontal focus pre-correction.
1999 Jul 13
44
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