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LM1203B データシート(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部品番号 LM1203B
部品情報  100 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)

LM1203B データシート(HTML) 3 Page - National Semiconductor (TI)

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AC Electrical Characteristics See Test Circuit(Figure 2) TA e 25 C VCC1 e VCC2 e 12V S17 21 26
Closed V14 e 0V V15 e 4V unless otherwise stated
Symbol
Parameter
Conditions
Typical
Limit
Units
(Note 5)
(Note 6)
AV max
Video Amplifier Gain
V12 e 12V VIN e 560 mVPP
65
45
VV(min)
D
VV5V
Attenuation
5V
Ref AV max V12 e 5V
b
8dB
D
AV2V
Attenuation
2V
Ref AV max V12 e 2V
b
30
dB
AV match
Absolute Gain Match
AV max
V12 e 12V (Note 8)
g
03
dB
D
AV track 1
Gain Change between Amplifiers
V12 e 5V (Notes 8 9)
g
01
dB
D
AV track 2
Gain Change between Amplifiers
V12 e 2V (Notes 8 9)
g
03
dB
THD
Video Amplifier Distortion
V12 e 3V VO e 1VPP
1%
f(b3 dB)
Video Amplifier Bandwidth
V12 e 12V VO e 4VPP
(Notes 10 11)
(With 36 pF Peaking Cap from
100
MHz
Pins 18 22 and 27 to GND)
f(b3 dB)
Video Amplifier Bandwidth
V12 e 12V VO e 4VPP
60
MHz
(Notes 10 11)
(No External Peaking Cap)
tr tf
Output RiseFall Time
VO e 4VPP (With 36 pF
(Note 10)
Peaking Cap from Pins 18
37
ns
22 and 27 to GND)
tr
Output Rise Time (Note 10)
VO e 4VPP (No External
55
ns
Peaking Capacitor)
tf
Output Fall Time (Note 10)
VO e 4VPP (No External
60
ns
Peaking Capacitor)
Vsep 10 kHz
Video Amplifier 10 kHz Isolation
V12 e 12V (Note 12)
b
70
dB
Vsep 10 MHz
Video Amplifier 10 MHz Isolation
V12 e 12V (Notes 10 12)
b
50
dB
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 1 13 23 28 must be externally wired together to prevent internal damage during VCC power onoff cycles
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
The supply current specified is the quiescent current for VCC1 and VCC2 with RL e % see Figure 2 ’s test circuit The supply current for VCC2 (pin 23) also
depends on the output load With video output at 2V DC the additional current through VCC2 is 18 mA for Figure 2 ’s test circuit
Note 8
Measure gain difference between any two amplifiers VIN e 1VPP
Note 9 D
AV track 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 (V12) at either 5V or 2V measured relative to an AV max condition V12 e 12V For example at
AV max the three amplifiers’ gains might be 174 dB 169 dB and 164 dB and change to 73 dB 69 dB and 65 dB respectively for V12 e 5V This yields the
measured typical g01 dB channel tracking
Note 10
When measuring video amplifier bandwidth or pulse rise and fall times a single sided with ground plane printed circuit board without socket is
recommended Video amplifier 10 MHz isolation test also requires this printed circuit board
Note 11
Adjust input frequency from 10 kHz (AV max reference level) to the b3 dB corner frequency (fb3dB)
Note 12
Measure output levels of the other two undriven amplifiers relative to the driven amplifier to determine channel separation Terminate the undriven
amplifier inputs to simulate generator loading Repeat test at fIN e 10 MHz for Vsep e 10 MHz
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