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參數(shù)資料
| 型號： | TDA4780 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | RGB video processor with automatic cut-off control and gamma adjust |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP28 |
| 封裝： | 0.600 INCH, PLASTIC, DIP-28 |
| 文件頁數(shù)： | 21/44頁 |
| 文件大?。?/td> | 321K |
| 代理商： | TDA4780 |
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1997 Feb 06
21
Philips Semiconductors
Preliminary specification
RGB video processor with automatic
cut-off control and gamma adjust
TDA4780
D
IFFERENCES OF BLACK LEVEL STEPS
(
DIFFERENCES FROM CHANNEL TO CHANNEL OF THE RATIO OF THE DIFFERENCE
(
BLACK LEVEL CUT
-
OFF MEASUREMENT LEVEL
)
TO ACTUAL NOMINAL SIGNAL AMPLITUDE
(V
NOM
24
, V
NOM
22
, V
NOM
20
)
OVER THE
WHOLE CONTRAST
,
BRIGHTNESS AND SATURATION RANGE
,
SWITCHING MATRIX OR SWITCHING FAST SWITCHES
,
GAMMA
= 1,
BLST = 0, ADBL = 0)
V/V
nom
static deviation
note 6; ripple on pin 5
during clamping
≤
1 mV;
note 7
at nominal saturation
1.0
+1.0
%
0.5
+0.5
%
RGB outputs (output for positive RGB signals (R: pin 24, G: pin 2, B: pin 20); following data without external
load)
R
24, 22, 20
I
24, 22, 20(max)
V
24, 22, 20(min)
V
24, 22, 20(max)
V
24, 22, 20(max)(p-p)
differential output resistance
maximum output current
minimum output voltage
maximum output voltage
maximum signal amplitude (black-white)
due to internal limits
(peak-to-peak value)
nominal signal amplitude (black-white;
peak-to-peak value)
4.0
6.3
3.3
25
5.0
7.0
30
0.8
mA
V
V
V
note 8
R
L
≥
2 k
V
24, 22, 20(max)(p-p)
at nominal white adjust,
contrast and saturation
setting; gamma = 1;
nominal input signals
note 8
1.7
2.0
2.3
V
V
24, 22, 20
V
24, 22, 20
cut-off measurement level
recommended cut-off measurement
level
1.0
3.0
5.0
V
V
O
UTPUT CLAMPING
(RGB)
V
20, 22, 24
W
HITE POTENTIOMETERS
G
v(inc)(max)
clamp voltage black level
control bit BCOF = 1
2.3
2.5
2.7
V
maximum increase of AC gain
I
2
C-bus data 3FH;
relative to nominal
setting; note 9
I
2
C-bus data 00H;
relative to nominal
setting; note 9
40
50
60
%
G
v(dec)(max)
maximum decrease of AC gain
40
50
60
%
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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