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LM1204V データシート(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部品番号 LM1204V
部品情報  150 MHz RGB Video Amplifier System
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メーカー  NSC [National Semiconductor (TI)]
ホームページ  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM1204V データシート(HTML) 4 Page - National Semiconductor (TI)

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AC Electrical Characteristics (Sync SeparatorProcessor Section)
The following specifications apply for VCC (Pins 2 4 6 19 31 36 41 and 44) e 12V and TA e 25 C unless otherwise
specified S1 e A S2 e B S3 4 5 closed V9 13 15 20 21 43 e 2V unless otherwise specified see Test Circuit
Figure 1
and Timing Diagram for input waveform
Symbol
Parameter
Conditions
Typical
Limit
Units
(Note 5)
(Note 6)
V18(Min)
Composite Video Input Voltage
S2 e A Input e 10% Duty
015
VPP
(Pin 18)
Cycle Test for Loss of BP
(Min)
V18(Max)
Composite Video Input Voltage
Pulse at Pin 26
2
VPP
(Pin 18)
(Max)
V23
g
H Sync Input Voltage (Pin 23)
Input e 10% Duty Cycle
16
VPP
(Min)
Back Porch Clamp Pulse Width
S2 eA Pin 26 e BP Output
1
14
m
s
at V24 e 1V
(Max)
Back Porch Clamp Pulse Width
300
600
ns
at V24 e 4V
(Max)
Maximum gH Sync Input Frequency
600
KHz
DHI
Max Duty Cycle of Active High
Test for Loss of Sync
22
%
H Sync (Pin 23)
at Pin 26
DLO
Max Duty Cycle of Active Low
22
%
H Sync (Pin 23)
tpdl1
g
H Sync Input to bH Sync
Input e 10% Duty Cycle
100
ns
Output Low Delay
tpdh1
g
H Sync Input to bH Sync
Input e 10% Duty Cycle
65
ns
Output High Delay
tpd1
g
H Sync Input Trailing Edge to
Input e 10% Duty Cycle
70
ns
Back Porch Clamp Output Delay
S2 e A
tpdl2
Composite Video Input to bH
Input e 10% Duty Cycle
106
ns
Sync Output Low Delay
tpdh2
Composite Video Input to bH
Input e 10% Duty Cycle
68
ns
Sync Output High Delay
tpd2
Composite Video Input Trailing
Input e 10% Duty Cycle
78
ns
Edge to Back Porch Clamp Output Delay
S2 e A
tpdl2–tpdl1
Composite Video and gH Sync Input
Input e 10% Duty Cycle
6ns
to bH Sync Output Delta Delay
Note 1
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur
Note 2
Operating Ratings indicate conditions for which the device is functional but do not guarantee specific performance limits For guaranteed specifications
and test conditions see the Electrical Characteristics The guaranteed specifications apply only for the test conditions listed Some performance characteristics
may degrade when the device is not operated under the listed test conditions
Note 3
VCC supply pins 2 4 6 19 31 36 41 and 44 must be externally wired together to prevent internal damage during VCC power onoff cycle
Note 4
Human body model 100 pF discharged through a 15 kX resistor
Note 5
Typical specifications are specified at a25 C and represent the most likely parametric norm
Note 6
Tested limits are guaranteed to National’s AOQL (Average Outgoing Quality Level)
Note 7 D
AV tracking is a measure of the ability of any two amplifiers to track each other and quantifies the matching of the three attenuators It is the difference in
gain change between any two amplifiers with the contrast voltage V21 at either 4V or 2V measured relative to an AV max condition V21 e 4V For example at AV
max the three amplifier gains might be 174 dB 169 dB and 164 dB and change to 73 dB 69 dB and 65 dB respectively for V21 e 2V This yields the measured
typical g01 dB channel tracking
Note 8
Brightness tracking error is measured with all three video channels set for equal gain The measured value is limited by the resolution of the measurement
equipment
Note 9
When measuring video amplifier bandwidth or pulse rise and fall times a double sided full ground plane printed circuit board is recommended Video
amplifier isolation tests also require this printed circuit board The measured rise and fall times are effective rise and fall times taking into account the rise and fall
times of the generator
Note 10
Measure output levels of either undriven amplifier relative to the driven amplifier to determine channel isolation Terminate the undriven amplifier inputs
4


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