TDA4680 Philips Semiconductors, TDA4680 Datasheet - Page 15

• Manufacturer Part Number: TDA4680
• Description: Video processor with automatic cut-off and white level control
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1996 Oct 25
G
I
t
t
n
Average beam current limiting (pin 15); note 7
V
V
Peak drive limiting voltage [pin 16; internal peak drive limiting level (V
control; sub-address 0AH]; note 8
V
I
V
V
V
14
d
BK
16
pulse
SYMBOL
V
V
V
V
c(15)
br(15)
20/22/24
16
c(16)
br(16)
Video processor with automatic cut-off
and white level control
ENERAL
c(15)
br(15)
c(16)
br(16)
input current
leading edge delay of the clamping
pulse
required burst key pulse time
required horizontal or burst key pulses
during vertical blanking interval
contrast reduction starting voltage
voltage difference for full contrast
reduction
brightness reduction starting voltage
voltage difference for full brightness
reduction
RGB output voltages
charge current
discharge current
internal voltage limitation
contrast reduction starting voltage
voltage difference for full contrast
reduction
brightness reduction starting voltage
voltage difference for full brightness
reduction
PARAMETER
V
control bit DELOF = 0
control bit DELOF = 1
control bit DELOF = 0;
normally used with f
control bit DELOF = 1;
normally used with 2f
e.g. at interlace scan
(VBW2 = 0)
e.g. at progressive line
scan (VBW2 = 1)
at 00H
at 3FH
during peak white
14
15
< 0.5 V
CONDITIONS
L
pdl
L
) acts on RGB outputs under I
3
1.5
4
8
6.5
4.5
MIN.
100
1.5
0
4.0
2.5
5
4.0
2.5
2.0
1.6
1
2.0
1.6
TYP.
Product specification
29
57
3.0
TDA4680
MAX.
2
C-bus
V
V
V
V
V
V
mA
V
V
V
V
V
UNIT
A
s
s
s
s
A