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TDA4851 Datasheet(PDF) 10 Page - NXP Semiconductors

Part No. TDA4851
Description  Horizontal and vertical deflection controller for VGA/XGA and autosync monitors
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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 10 page
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November 1992
10
Philips Semiconductors
Preliminary specification
Horizontal and vertical deflection controller
for VGA/XGA and autosync monitors
TDA4851
Notes to the characteristics
1.
∆Io/∆t relative to value of Mode 3.
2. Parabola amplitude tracks with mode-dependent vertical amplitude but not with vertical amplitude adjustment.
Tracking can be achieved by a resistor from vertical amplitude potentiometer to pin 14.
Horizontal output (open-collector)
Fig.6
V3
output voltage LOW
I3 =20mA
−−
0.3
V
I3 =60mA
−−
0.8
V
tp/tH
tH duty factor
42
45
48
%
VP
threshold to activate under voltage
protection
horizontal output off
5.6
V
horizontal output on
5.8
V
∆tH
jitter of horizontal output
f
= 31 kHz
−−
3.5
ns
f
= 64 kHz
−−
1.9
ns
f
= 100 kHz
−−
1.2
ns
E/W output
note 2
V11
bottom output signal during mid-scan
(pin 11)
internally stabilized
1.05
1.2
1.35
V
top output signal during flyback
4.2
4.5
4.8
V
temperature coefficient of output signal
−−
250
10-6/K
E/W amplitude adjustment (parabola)
Fig.7
V14
input voltage (pin 14)
5.0
V
I14
adjustment current
100% parabola
−110
−120
−135
µA
typically 28% parabola
0
−µA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT




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