TDA4687 Philips Semiconductors, TDA4687 Datasheet - Page 12

• Manufacturer Part Number: TDA4687
• Description: Video processor with automatic cut-off control
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1997 Jun 23
Fast signal switch FSW
V
R
Fast signal switch FSW
V
R
Saturation adjust [acts on (R
1.5% of maximum saturation); data byte 3FH for maximum saturation, data byte 23H for nominal saturation
and data byte 00H for minimum saturation]
d
Contrast adjust [acts on internal RGB signals under I
maximum contrast); data byte 3FH for maximum contrast, data byte 22H for nominal contrast and data byte
00H for minimum contrast]
d
Brightness adjust [acts on internal RGB signals under I
of maximum brightness); data byte 3FH for maximum brightness, data byte 26H for nominal brightness and
data byte 00H for minimum brightness]
d
White potentiometers [under I
3FH for maximum gain; data byte 19H for nominal gain and data byte 00H for minimum gain]; note 3
s
c
br
SYMBOL
t
t
G
13
1
13
1
Video processor with automatic cut-off control
v
voltage to select Y and CD
voltage to select R
internal resistance to ground
difference between transit times for
signal switching and signal insertion
voltage to select Y, CD/R
voltage to select R
internal resistance to ground
difference between transit times for
signal switching and signal insertion
saturation below maximum
contrast below maximum
black level shift of nominal signal
amplitude referred to cut-off
measurement level
relative to nominal gain
increase of gain
decrease of gain
1
2
PARAMETER
(pin 13) to select Y, CD or R
(pin 1) to select Y, CD/R
2
1
2
C-bus control; subaddresses 04H (red), 05H (green) and 06H (blue); data byte
, G
, G
Y) and (B
1
2
, B
, B
1
, G
1
2
1
, B
1
Y) signals under I
1
, G
at 23H
at 00H; f = 100 kHz
at 22H
at 00H
at 3FH
at 00H
at 3FH
at 00H
1
1
, B
2
, G
12
C-bus control; subaddress 02H (bit resolution 1.5% of
CONDITIONS
2
1
1
C-bus control; subaddress 00H (bit resolution 1.5%
, B
or R
1
inputs (control bits: see Table 2)
2
2
, G
C-bus control; subaddress 01H (bit resolution
2
, B
2
inputs (control bits: see Table 2)
0.9
0.9
MIN.
4.0
4.0
5
50
5
22
30
50
50
50
TYP.
Product specification
0.4
5.0
10
0.4
5.0
10
TDA4687
MAX.
V
V
k
ns
V
V
k
ns
dB
dB
dB
dB
%
%
%
%
UNIT