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LM1282 Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. LM1282
Description  110 MHz RGB Video Amplifier System with On Screen Display (OSD)
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LM1282 Datasheet(HTML) 3 Page - National Semiconductor (TI)

 
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AC Electrical Characteristics (Note 15)
See AC Test Circuit (
Figure 3),T
A = 25˚C, VCC1 = VCC2 = 12V; V4 = 0V. Manually adjust Video Output pins 18, 20, and 23 to
4V DC for the AC test unless otherwise stated
Symbol
Parameter
Conditions
Typical
Limit
Units
(Note 5)
(Note 6)
A
V max
Video Amplifier Gain
V
13 = 4V, VIN = 400 mVPP
10.0
7.0
V/V (min)
V
drive = 4V
20.0
16.9
dB (min)
∆A
V2V
Contrast Attenuation @ 2V
Ref: A
V max, V13 = 2V
−6
dB
∆A
V 0.25V
Contrast Attenuation @ 0.25V
Ref: A
V max, V13 = 0.25V
−24
dB
∆Drive
2V
Drive Attenuation @ 2V
Ref: A
V max, Vdrive = 2V
−4.5
dB
∆Drive
0.25V
Drive Attenuation @ 0.25V
Ref: A
V max, Vdrive = 0.25V
−11
dB
A
V match
Absolute Gain Match @ A
V max
V
13 = 4V, Vdrive = 4V (Note 9)
±0.3
dB
A
V track
Gain Change between Amplifiers
V
13 = 4V to 2V (Notes 9, 10)
±0.2
dB
THD
Video Amplifier Distortion
V
O = 1VPP,f = 10 kHz
1
%
f(−3 dB)
Video Amplifier Bandwidth
V
13 = 4V, Vdrive = 3V,
110
MHz
(Notes 11, 12)
V
O = 4VPP
t
r (Video)
Video Output Rise Time (Note 11)
V
O = 4VPP
3.0
ns
t
f (Video)
Video Output Fall Time (Note 11)
V
O = 4VPP
4.0
ns
V
sep 10 kHz
Video Amplifier 10 kHz Isolation
V
13 = 4V (Note 13)
−70
dB
V
sep 10 MHz
Video Amplifier 10 MHz Isolation
V
13 = 4V (Notes 11, 13)
−50
dB
t
r (Blank)
Blank Output Rise Time (Note 11)
Blank Output = 1V
PP
8ns
t
f (Blank)
Blank Output Fall Time (Note 11)
Blank Output = 1V
PP
14
ns
t
r-prop (Blank)
End of Blanking Propagation Delay
Blank Output = 1V
PP
23
ns
t
f-prop (Blank)
Start of Blanking Propagation Delay
Blank Output = 1V
PP
20
ns
T
pw (Clamp)
Back Porch Clamp Pulse Width
(Note 14)
200
ns (min)
OSD Electrical Characteristics
See DC Test Circuit (
Figure 2), T
A = 25˚C; VCC1 = VCC2 = 12V; V13 = 4V; V14 = 4V; V16 = 4V; VDrive = 4V; V4 = 4V; V15 =
0V; V
25 = 1V unless otherwise stated
Symbol
Parameter
Conditions
Typical
Limit
Units
(Note 5)
(Note 6)
V
OSDI
OSD Input Low Input Voltage
1.2
0.4
V (max)
V
OSDh
OSD Input High Input Voltage
1.6
2.0
V (min)
V
4l
OSD Select Low Input Voltage
Video Inputs are Selected
1.2
0.8
V (max)
V
4h
OSD Select High Input Voltage
OSD Inputs are Selected
1.6
2.0
V (min)
I
4l
OSD Select Low Input Current
V
4 = 0V
−3.0
−6.0
µA (max)
I
4h
OSD Select High Input Current
V
4 = 12V
0.01
1.0
µA (min)
∆V
O-OSD(1V)
OSD
∆Black Level Output Voltage,
V
25 = 1V
±45
±175
mV (max)
Difference from Video Output
V
OSD-out
OSD Output Voltage V
PP
V
14 = 4V, VDrive = 2V
5.0
V
PP
∆V
OSD-out
OSD Output V
PP Attenuation
V
14 = 2V, VDrive = 2V
50
30
% (min)
∆V
OSD-out match
Output Match between Channels
V
14 = 4V, VDrive = 2V
±2.0
%
V
OSD-out track
Output Variation between Channels
V
14 = 4V to 2V, VDrive = 2V
±3.5
%
t
r (OSD S)
Video to OSD Switch Time (Note 11)
V
1 = V2 = V3 = 4V (Note 16)
4
ns
t
f (OSD S)
OSD to Video Switch Time (Note 11)
V
1 = V2 = V3 = 4V (Note 16)
11
ns
t
r-prop (OSD S)
Video to OSD Propagation Delay
V
1 = V2 = V3 = V13 = V14 = 4V
11
ns
t
f-prop (OSD S)
OSD to Video Propagation Delay
V
1 = V2 = V3 = V13 = V14 = 4V
12
ns
t
r (OSD)
OSD Rise Time at V
O (Note 11)
V
14 = 4V; V25 = 1V
4
ns
t
f (OSD)
OSD Fall Time at V
O (Note 11)
V
14 = 4V; V25 = 1V
10
ns
t
r-prop (OSD)
Starting OSD Propagation Delay
V
14 = 4V; V25 = 1V
6.5
ns
t
f-prop (OSD)
Ending OSD Propagation Delay
V
14 = 4V; V25 = 1V
9
ns
3
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