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TDA4850 Datasheet(PDF) 9 Page - NXP Semiconductors

Part No. TDA4850
Description  Horizontal and vertical deflection controller for VGA/XGA and multi-frequency monitors
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo 

 9 page
background image
1997 Jun 05
9
Philips Semiconductors
Product specification
Horizontal and vertical deflection controller
for VGA/XGA and multi-frequency monitors
TDA4850
Horizontal mode detector output (VGA mode)
V7
output saturation voltage LOW
(for modes 1, 2 and 3)
I7 =6mA
0.275
0.33
V
output voltage HIGH
mode 4
−−
VP
V
I7
load current to force VGA mode-dependent
vertical and parabola amplitudes
modes 1, 2 and 3
2
6mA
output current
mode 4
0
mA
VGA/multi-frequency mode switch
V7
input voltage LOW to force
multi-frequency mode
0
50
mV
Horizontal comparator PLL1
V17
upper control voltage limitation
5.0
V
lower control voltage limitation
1.2
V
I17
control current
see Fig.3
−±300
−µA
Horizontal oscillator
fosc
centre frequency
R18 =12kΩ (pin 18);
C19 = 2.2 nF (pin 19)
31.45
kHz
∆f
osc
deviation of centre frequency
−−±3.0
%
TC
temperature coefficient
−−±150
10−6/K
ϕ
H/tH
relative holding/catching range
±6
±6.5
±7.3
%
R18
external oscillator resistor
9
18
k
V18
voltage at reference current input (pin 18)
PLL1 and PLL2 locked;
Vref = 6.25 V
3.125
V
∆V
18
control voltage
−±205
mV
Horizontal PLL2; see Fig.3
V2
upper clamping level of flyback input
I2 =6mA
5.5
V
lower clamping level of flyback input
I2 = −1mA
−−0.75
V
H-flyback slicing level
3.0
V
I2
input current
H-scan; V8 < 0.9 V
−0.5
−−
mA
H-flyback; V8 > 1.8 V
−−−0.2
mA
td/tH
delay between middle of sync and middle of
H-flyback related to tH
3.2
%
V20
upper control voltage limitation
4.6
V
lower control voltage limitation
1.6
V
I20
control current
−±200
−µA
∆t/tH
PLL2 control range related to tH
30
−−
%
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT




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