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參數(shù)資料
| 型號： | TDA4780 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)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)： | 18/44頁 |
| 文件大?。?/td> | 321K |
| 代理商： | TDA4780 |
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1997 Feb 06
18
Philips Semiconductors
Preliminary specification
RGB video processor with automatic
cut-off control and gamma adjust
TDA4780
CHARACTERISTICS
V
P
= 8 V; T
amb
= +25
°
C; V
nom
: nominal signal amplitude (black-white) 2 000 mV (peak-to-peak value) at output pins;
gamma = 1; adaptive black inactive; brightness, contrast, saturation and white balance at nominal settings; no beam
current or peak drive limiting; all voltages are related to ground (pin 9) and measured in Figs 1 and 2; unless otherwise
specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
P
I
P
Colour-difference inputs (
(B
Y): pin 6,
(R
Y): pin 7; capacitively coupled to a low-ohmic source;
recommendation: maximum 600
)
V
6(p-p)
(B
Y) signal (peak-to-peak value)
V
6, 7
internal bias during clamping
I
6, 7
DC input current between clamping
pulses
I
6, 7
maximum input current during clamping
V
7(p-p)
(R
Y) signal (peak-to-peak value)
R
6, 7
AC input resistance
Y input (pin 8; capacitively coupled to a low-ohmic source; recommendation: maximum 600
)
V
8(p-p)
input signal (composite signal; VBS;
peak-to-peak value)
supply voltage (pin 5)
supply current (pin 5)
7.2
8
100
8.8
120
V
mA
75% colour bar signal
1.33
4.0
0.1
V
V
μ
A
100
10.0
180
1.05
260
μ
A
V
M
75% colour bar signal
adaption to two
different signal levels
via control bit YHI
YHI = 0
YHI = 1
10.0
0.45
1.43
3.7
4.6
0.1
V
V
M
V
V
μ
A
R
8
V
8
AC input resistance
internal bias during clamping
YHI = 0
YHI = 1
I
8
DC input current between clamping
pulses
maximum input current during clamping
I
8(max)(clamp)
100
180
260
μ
A
RGB input 1 (R
1
: pin 10, G
1
: pin 11, B
1
: pin 12; capacitively coupled to a low-ohmic source;
recommendation: maximum 600
);
note 1
V
10, 11, 12(p-p)
input signal (peak-to-peak value)
R
10, 11, 12
AC input resistance
V
10, 11, 12
internal bias during clamping
I
10, 11, 12
DC input current between clamping
pulses
I
10, 11, 12(clamp)
maximum input current during clamping
10.0
0.7
5.1
0.1
V
M
V
μ
A
100
180
260
μ
A
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