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參數(shù)資料
| 型號： | LM1247 |
| 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)： | 2/48頁 |
| 文件大?。?/td> | 3141K |
| 代理商： | LM1247 |
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Absolute Maximum Ratings
(Notes 1, 3)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage V
CC
, Pins 10 and 18
Peak Video DC Output Source Current
(Any One Amp) Pins 19, 20 or 21
Voltage at Any Input Pin (V
IN
)
Video Inputs (pk-pk)
Thermal Resistance to Ambient (
θ
JA
)
Power Dissipation (P
D
)
(Above 25C Derate Based
on
θ
JA
and T
J
)
Thermal Resistance to case (
θ
JC
)
Junction Temperature (T
J
)
6.0V
1.5 mA
V
CC
+0.5
≥
V
IN
≥
0.5V
0.0
≤
V
IN
≤
1.2V
51C/W
2.4W
32C/W
150C
ESD Susceptibility (Note 4)
ESD Machine Model (Note 13)
Storage Temperature
Lead Temperature (Soldering, 10 sec.)
3.0 kV
350V
65C to +150C
265C
Operating Ratings
(Note 2)
Temperature Range
Supply Voltage V
CC
Video Inputs (pk-pk)
0C to +70C
4.75V
≤
V
CC
≤
5.25V
0.0V
≤
V
IN
≤
1.0V
Video Signal Electrical Characteristics
Unless otherwise noted: T
A
= 25C, V
CC
= +5.0V, V
IN
= 0.70 V
P-P
, V
ABL
= V
CC
, C
L
= 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
Max
Units
I
S
Supply Current
Test Setting 1, both supplies, no
output loading. See (Note 8).
Test Setting 1, both supplies, no
output loading. See (Note 8).
Test Setting 4, no AC input signal, DC
offset (register 0x8438 set to 0xd5).
Test Setting 4, no AC input signal.
195
250
mA
I
S-PS
Supply Current, Power Save
Mode
Active Video Black Level Output
Voltage
Active Video Black Level Step
Size
Maximum Video Output Voltage
Linearity Error
55
85
mA
V
O BLK
1.2
VDC
V
O BLK STEP
100
mVDC
V
O
Max
LE
Test Setting 3, Video in = 0.70 V
P-P
Test Setting 4, staircase input signal
(see (Note 9)).
(Note 5), 10% to 90%, Test Setting 4,
AC input signal.
(Note 5), Test Setting 4, AC input
signal.
(Note 5), 90% to 10%, Test Setting 4,
AC input signal.
(Note 5), Test Setting 4, AC input
signal.
(Note 5), Test Setting 4, AC input
signal.
(Note 14), Test Setting 8.
(Note 14), Test Setting 8.
Test Setting 8, AC input signal.
Test Setting 5, AC input signal.
Test Setting 2, AC input signal.
4.0
4.3
V
5
%
t
r
Video Rise Time
3.1
ns
OS
R
Rising Edge Overshoot
2
%
t
f
Video Fall Time
2.9
ns
OS
F
Falling Edge Overshoot
2
%
BW
Channel bandwidth (3 dB)
150
MHz
V
SEP
10 kHz
V
SEP
10 MHz
A
V
Max
A
V
C-50%
A
V
Min/A
V
Max
Video Amplifier 10 kHz Isolation
Video Amplifier 10 MHz Isolation
Maximum Voltage Gain
Contrast Attenuation
@
50%
Maximum Contrast Attenuation
(dB)
Gain Attenuation
@
50%
Maximum Gain Attenuation
Maximum Gain Match between
channels
Gain Change between channels
60
50
4.1
5.2
dB
dB
V/V
dB
3.8
20
dB
A
V
G-50%
A
V
G-Min
A
V
Match
Test Setting 6, AC input signal.
Test Setting 7, AC input signal.
Test Setting 3, AC input signal.
4.0
11
±
0.5
dB
dB
dB
A
V
Track
Tracking when changing from Test
Setting 8 to Test Setting 5. See (Note
11).
±
0.5
dB
L
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