TDA4850 Datasheet, PDF (9/20 Pages) NXP Semiconductors – Horizontal and vertical deflection controller for VGA/XGA and multi-frequency monitors

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