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LM1279 データシート(PDF) 4 Page - Texas Instruments

部品番号 LM1279
部品情報  110 MHz RGB Video Amplifier System with OSD
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
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LM1279 データシート(HTML) 4 Page - Texas Instruments

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OBSOLETE
LM1279
SNOS020B – SEPTEMBER 1998 – REVISED APRIL 2013
www.ti.com
DC ELECTRICAL CHARACTERISTICS
TA = 25°C; VCC1 = VCC2 = 8V; V10 = 4V; VDrive = 4V; V11 = 7V; VOSD = 0V; RL = 390Ω unless otherwise stated.
Symbol
Parameter
Condition
Typical(1)
Limit(2)
Units
IS
Supply Current
ICC1 + ICC2 − ILoad
(3)
80
90
mA(max)
V3, 5, 8
Video Amplifier Input Bias Voltage
2.5
V
RIN
Video Input Resistance
Any One Amplifier
20
k
V11off
Sandcastle Off Voltage
1.4
1.2
V (max)
V11blank
Sandcastle Blank Voltage
Start of Blank Region
1.4
1.7
V (min)
V11blank
Sandcastle Blank Voltage
End of Blank Region
2.8
3.2
V (max)
V11clamp & Blank
Sandcastle Clamp and Blank On Voltage
Start of Clamp and Blank Region
3.2
3.6
V (min)
V11clamp & Blank
Sandcastle Clamp and Blank On Voltage
End of Clamp and Blank Region
6.2
5.8
V (max)
V11clamp
Sandcastle Clamp On/Blank Off Voltage
Clamp Only Region, Max = VCC
6.2
6.5
V (min)
I11off
Sandcastle Off Current
V11 = 0V
−5.0
−8.0
µA(max)
I11test
Sandcastle Clamp On/Blank Off Curr
V11 = 6.5V
−100
−500
nA(max)
Iclamp
Clamp Cap Charge Current
Clamp Comparators On
±750
±500
µA(min)
Ibias
Clamp Cap Bias Discharge Current
Clamp Comparators Off
50
200
nA (max)
VOL
Video Black Level
VVideo in = 0V, V11 = 6.5V
1.35
1.55
V (max)
ΔVOL
Video
ΔBlack Level Output Voltage(4)
Between Any Two Amplifiers
±50
±200
mV (max)
VOH
Video Output High Voltage
V11 < 1.2V
5.0
4.6
V (min)
I10, 12, 14, 17
Contrast/Drive Control Input Current
VContrast = VDrive = 0V to 4V
−0.25
−1.5
µA (max)
I1l, 19l, 20l
OSD Low Input Current (each)
VOSD in = 0V
−2.5
−10.0
µA(max)
I1h, 19h, 20h
OSD High Input Current (each)
VOSD in = 5V
100
130
µA(max)
VOL(Blank)
Video Output during Blanking
V11 = 1.7V
0.1
0.5
V (max)
(1)
Typical specifications are specified at +25°C and represent the most likely parametric norm.
(2)
Tested limits are specified to TI's AOQL (Average Outgoing Quality Level).
(3)
The supply current specified is the current for VCC1 and VCC2 minus the current through RL (Isupply = ICC1 + ICC2 − IL). The supply current
for VCC2 (pin 16) does depend on the output load. With video output at 1V DC, the additional current through VCC2 is 7.7 mA with RL =
390
Ω.
(4)
Output voltage is dependent on load resistor. Test circuit uses RL = 390Ω.
4
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