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參數(shù)資料
| 型號(hào)： | TDA4681 |
| 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, PDIP28 |
| 封裝： | 0.600 INCH, PLASTIC, SOT-117-1, MO-015AH, DIP-28 |
| 文件頁數(shù)： | 15/28頁 |
| 文件大?。?/td> | 160K |
| 代理商： | TDA4681 |
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1997 Mar 04
15
Philips Semiconductors
Product specification
Video processor with automatic cut-off
and white level control
TDA4681
G
ENERAL
I
14
t
d
input current
leading edge delay of the clamping
pulse
V
14
< 0.5 V
control bit DELOF = 0
control bit DELOF = 1
control bit DELOF = 0;
normally used with f
L
control bit DELOF = 1;
normally used with 2f
L
e.g. at interlace scan
(VBW2 = 0)
e.g. at progressive line
scan (VBW2 = 1)
100
3
1.5
0
μ
A
μ
s
μ
s
μ
s
t
BK
required burst key pulse time
1.5
μ
s
n
pulse
required horizontal or burst key pulses
during vertical blanking interval
4
29
8
57
Average beam current limiting (pin 15);
note 7
V
c(15)
V
c(15)
contrast reduction starting voltage
voltage difference for full contrast
reduction
brightness reduction starting voltage
voltage difference for full brightness
reduction
4.0
2.0
V
V
V
br(15)
V
br(15)
2.5
1.6
V
V
Peak drive limiting voltage [pin 16; internal peak drive limiting level (V
pdl
) acts on RGB outputs under I
2
C-bus
control; subaddress 0AH];
note 8
V
20,22,24
RGB output voltages
at 00H
at 3FH
6.5
4.5
1
5
4.0
2.0
3.0
V
V
μ
A
mA
V
V
V
I
16
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
during peak white
V
16
V
c(16)
V
c(16)
V
br(16)
V
br(16)
2.5
1.6
V
V
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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