tda4855 NXP Semiconductors, tda4855 Datasheet - Page 13

• Manufacturer Part Number: tda4855
• Description: Autosync Deflection Controller Asdc
• Manufacturer: NXP Semiconductors

Philips Semiconductors
CHARACTERISTICS
V
1996 Jul 18
Horizontal sync separator
I
V
t
t
t
I
I
V
V
I
t
R
r
Automatic polarity correction for horizontal sync
t
Vertical sync integrator
t
Vertical sync slicer (DC-coupled, TTL compatible) [VSYNC (pin 14)]
V
I
t
------------ -
CC
NPUT CHARACTERISTICS FOR DC
r(HSYNC)
f(HSYNC)
W(HSYNC)
DC(HSYNC)
NPUT CHARACTERISTICS FOR
C(HSYNC)
HSYNC(min)
P(H)
int(V)
VSYNC
diff(HSYNC)
P H
DC(HSYNC)
AC(HSYNC)
clamp(HSYNC)
VSYNC
Autosync Deflection Controller (ASDC)
S(max)
t
H
SYMBOL
= 12 V; T
amb
= 25 C; peripheral components in accordance with Fig.1; unless otherwise specified.
sync input signal voltage
slicing voltage level
rise time of sync pulse
fall time of sync pulse
minimum width of sync pulse
input current
sync amplitude of video input
signal voltage
slicing voltage level
(measured from top sync)
top sync clamping voltage level
charge current for coupling
capacitor
minimum width of sync pulse
maximum source resistance
differential input resistance
horizontal sync pulse width
related to t
delay time for changing polarity
integration time for generation
of a vertical trigger pulse
sync input signal voltage
slicing voltage level
input current
PARAMETER
AC-
H
-
COUPLED
COUPLED VIDEO SIGNALS
TTL
SIGNALS
V
V
source resistance
R
V
duty factor = 7%
during sync
f
f
f
I
f
I
f
I
0 V
H
H
H
HREF
H
HREF
H
HREF
HSYNC
HSYNC
HSYNC
S
= 31.45 kHz;
= 64 kHz;
= 100 kHz;
[HSYNC (
= 50
45 kHz
45 kHz
(
SYNC
13
= 1.052 mA
= 2.141 mA
= 3.345 mA
V
CONDITIONS
SYNC
= 0.8 V
= 5.5 V
V
-
ON
clamp(HSYNC)
PIN
-
5.5 V
VIDEO
15)]
,
NEGATIVE SYNC POLARITY
1.7
1.2
10
10
0.7
90
1.1
1.7
0.7
0.3
7
3.9
2.5
1.7
1.2
MIN.
1.4
300
120
1.28
2.4
80
10
5.7
3.8
1.4
TYP.
Preliminary specification
)
1.6
500
500
10
150
1.5
3.4
1500
20
25
1.8
13
6.5
4.5
1.6
MAX.
200
10
TDA4855
V
V
ns
ns
mV
mV
V
%
%
ms
V
V
s
A
A
A
s
s
s
s
A
UNIT