參數(shù)資料
型號： LM1276AAA
廠商： National Semiconductor Corporation
英文描述： 150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character RAM and 4 DACs
中文描述： 150 MHz的I2C兼容的RGB前置放大器512個字符OSD光盤，512個字符RAM和4 DAC的內(nèi)置
文件頁數(shù)： 5/50頁
文件大?。?/td> 2597K
代理商： LM1276AAA
Video Signal Electrical Characteristics
(Continued)
Unless otherwise noted: T
= 25C, V
= +5.0V, V
= 0.70 V
, V
= V
, C
= 8 pF, Video Outputs = 2.0 V
P-P
. Setting
numbers refer to the definitions in
Table 1
. See (Note 7) for Min and Max parameters and (Note 6) for Typicals.
Symbol
Parameter
Conditions
Min
Typ
4.0
11
Max
Units
dB
dB
A
V
G-50%
A
V
G-Min
A
V
Match
Gain Attenuation
@
50%
Maximum Gain Attenuation
Maximum Gain Match between
Channels
Gain Change between Channels
Test Setting 6, AC input signal.
Test Setting 7, AC input signal.
Test Setting 3, AC input signal.
±
0.5
dB
A
V
Track
Tracking when changing from Test
Setting 8 to Test Setting 5. See (Note
11).
Normal Operation
(Note 12), Test Setting 4, AC input
signal.
(Note 12), Test Setting 4, AC input
signal.
(Note 12), Test Setting 4, AC input
signal. V
ABL
= 3.5V
(Note 12), Test Setting 4, AC input
signal. V
ABL
= 2.0V
±
0.5
dB
Vid
Threshold
V
ABL
TH
Video Threshold
ABL Control Range Upper Limit
80
mV
4.8
V
V
ABL
Range
ABL Gain Reduction Range
2.8
V
A
V 3.5
/A
V Max
ABL Gain Reduction at 3.5V
2
dB
A
V 2.0
/A
V Max
ABL Gain Reduction at 2.0V
12
dB
I
ABL
Max
ABL Input Current Sink Capability (Note 12), Test Setting 4, AC input
signal.
(Note 12), Test Setting 4, AC input
signal. I
ABL
= I
ABL
MAX
(Note 9), Test Setting 4, 0.7 V
P-P
input signal, ABL voltage set to 4.5V
and 2.5V.
Test Setting 4.
2.5
mA
V
ABL
Max
Maximum ABL Input Voltage
during Clamping
ABL Gain Tracking Error
V
CC
+
0.1
V
A
V
ABL Track
5.0
%
R
IP
Minimum Input Resistance (pins
5, 6, 7)
20
M
OSD Electrical Characteristics
Unless otherwise noted: T
A
= 25C, V
CC
= +5.0V. See (Note 7) for Min and Max parameters and (Note 6) for Typicals.
Symbol
Parameter
V
OSDHIGH
max
Maximum OSD Level with OSD
Contrast 111
111, Test Setting 3
V
OSDHIGH
110
Maximum OSD Level with OSD
Contrast 110
110, Test Setting 3
V
OSDHIGH
101
Maximum OSD Level with OSD
Contrast 101
01, Test Setting 3
V
OSDHIGH
100
Maximum OSD Level with OSD
Contrast 100
100, Test Setting 3
V
OSDHIGH
011
Maximum OSD Level with OSD
Contrast 011
011, Test Setting 3
V
OSDHIGH
010
Maximum OSD Level with OSD
Contrast 010
010, Test Setting 3
V
OSDHIGH
001
Maximum OSD Level with OSD
Contrast 001
001, Test Setting 3
V
OSDHIGH
000
Maximum OSD Level with OSD
Contrast 000
000, Test Setting 3
V
OSD
(Black)
Difference between OSD Black
Level and Video Black Level (same
channel)
Setting 8
Conditions
Min
Typ
Max
Units
Palette Set at 111, OSD Contrast =
3.02
V
Palette Set at 111, OSD Contrast =
2.91
V
Palette Set at 111, OSD Contrast =
2.79
V
Palette Set at 111, OSD Contrast =
2.67
V
Palette Set at 111, OSD Contrast =
2.55
V
Palette Set at 111, OSD Contrast =
2.43
V
Palette Set at 111, OSD Contrast =
2.32
V
Palette Set at 111, OSD Contrast =
2.20
V
Register 0x8438=0x18, Input Video
= Black, Same Channel, Test
±
130
mV
L
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