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參數(shù)資料
| 型號(hào)： | TDA4681WP |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | Video processor with automatic cut-off and white level control |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC28 |
| 封裝： | PLASTIC, SOT-261-2, LCC-28 |
| 文件頁數(shù)： | 13/28頁 |
| 文件大小： | 160K |
| 代理商： | TDA4681WP |
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1997 Mar 04
13
Philips Semiconductors
Product specification
Video processor with automatic cut-off
and white level control
TDA4681
Fast signal switch FSW
1
(pin 13) to select Y, CD or R
1
, G
1
, B
1
inputs
(control bits: see Table 3)
V
13
voltage to select Y and CD
voltage range to select R
1
, G
1
, B
1
internal resistance to ground
difference between transit times for
signal switching and signal insertion
0.9
4.0
0.4
5.0
10
V
V
k
ns
R
13
t
Fast signal switch FSW
2
(pin 1) to select Y, CD/R
1
, G
1
, B
1
or R
2
, G
2
, B
2
inputs
(control bits: see Table 3)
V
1
voltage to select Y, CD/R
1
, G
1
, B
1
voltage to select R
2
, G
2
, B
2
internal resistance to ground
difference between transit times for
signal switching and signal insertion
0.9
4.0
0.4
5.0
10
V
V
k
ns
R
1
t
Saturation adjust [acts on internal RGB signals under I
2
C-bus control; subaddress 01H (bit resolution 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
s
saturation below maximum
at 23H
at 00H; f = 100 kHz
5
50
dB
dB
Contrast adjust [acts on internal RGB signals under I
2
C-bus control; subaddress 02H (bit resolution 1.5% of
maximum contrast); data byte 3FH for maximum contrast, data byte 2CH for nominal contrast and data byte
00H for minimum contrast]
d
c
contrast below maximum
at 2CH
at 00H
3
22
dB
dB
Brightness adjust [acts on internal RGB signals under I
2
C-bus control; subaddress 00H (bit resolution 1.5%
of brightness range); data byte 3FH for maximum brightness, data byte 27H for nominal brightness and data
byte 00H for minimum brightness]
d
br
black level shift of nominal signal
amplitude referred to cut-off
measurement level
at 3FH
at 00H
30
50
%
%
White potentiometers [under I
2
C-bus control; subaddresses 04H (red), 05H (green) and 06H (blue); data byte
3FH for maximum gain; data byte 22H for nominal gain and data byte 00H for minimum gain];
note 3
G
v
relative to nominal gain
increase of AC gain
at 3FH
decrease of AC gain
at 00H
60
60
%
%
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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