LM1282N National Semiconductor, LM1282N Datasheet - Page 4

• Manufacturer Part Number: LM1282N
• Description: IC VIDEO AMP SYSTEM 28-DIP
• Manufacturer: National Semiconductor

Specifications of LM1282N

• Applications: General Purpose
• Number Of Circuits: 3
• -3db Bandwidth: 110MHz
• Current - Supply: 95mA
• Current - Output / Channel: 28mA
• Voltage - Supply, Single/dual (±): 11.4 V ~ 12.6 V
• Mounting Type: Through Hole
• Package / Case: 28-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *LM1282N

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V
V
See DC Test Circuit ( Figure 2 ), T
0V; V
feed
feed
OSD Electrical Characteristics
Note 1: Absolute Maximum Rating 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 de-
grade when the device is not operated under the listed test conditons.
Note 3: V
Note 4: Human body model, 100 pF discharged through a 1.5 k
Note 5: Typical specifications are specified at +25˚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 V
depends on the output load. With video output at 1V DC, the additional current through V
Note 8: Output voltage is dependent on load resistor. Test circuit uses R
Note 9: Measure gain difference between any two amplifiers. V
Note 10:
gain change between any two amplifiers with the contrast voltage (V
max the three amplifiers’ gains might be 17.1 dB, 16.9 dB, and 16.8 dB and change to 11.2 dB, 10.9 dB and 10.7 dB respectively for V
sured typical
Note 11: When measuring video amplifier bandwidth or pulse rise and fall times, a double sided full ground plane printed circuit board without socket is recom-
mended. Video amplifier 10 MHz isolation test also requires this printed circuit board. The reason for a double sided full ground plane PCB is that large measurement
variations occur in single sided PCBs.
Note 12: Adjust input frequency from 10 MHz (A
Note 13: 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 f
Note 14: A minimum pulse width of 200 ns is guaranteed for a horizontal line of 15 kHz. This limit is guaranteed by design. If a lower line rate is used a longer clamp
pulse may be required.
Note 15: During the AC test the 4V DC level is the center voltage of the AC output signal. For example, if the output is 4 V
and 6V DC.
Note 16: When V
shown in Figure 3 . Thus t
Note 17: Machine Model ESD test is covered by specification EIAJ IC-121-1981. A 200 pF cap is charged to the specified voltage, then discharged directly into the
IC with no external series resistor (resistor of discharge path must be under 50 ).
Typical Performance Characteristics
Attenuation vs Contrast Voltage
Symbol
10 kHz
10 MHz
25
= 1V unless otherwise stated
CC
A
V
±
supply pins 6, 9, and 22 must be externally wired together to prevent internal damage during V
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
0.1 dB channel tracking.
1
= V
Video Feedthrough into OSD
Video Feedthrough into OSD
2
= V
r
(OSD) is actually a fall time and t
3
= 0V and the video input is 0.7V, then t
Parameter
A
= 25˚C; V
V
max reference level) to the −3 dB corner frequency (f
DS012519-2
IN
= 10 MHz for V
CC1
f
(OSD) is actually a rise time in this condition.
= V
IN
CC1
(Continued)
= 400 mV
CC2
resistor.
13
r
(OSD) = 11 ns and t
) at either 4V or 2V measured relative to an A
and V
sep 10 MHz
= 12V; V
L
V
V
V
V
= 390 .
14
1
14
1
CC2
PP
= V
= V
V
.
Attenuation vs Drive Voltage
= 4V; V
= 4V; V
4
with R
CC
.
2
2
13
= 12V, T
= V
= V
L
= 4V; V
Conditions
=
CC2
f
25
25
3
3
(OSD) = 4 ns. The Video Output waveform will be inverted from the one
= 0V
= 0V
, see Figure 5 ’s test circuit. The supply current for V
= 1V;
= 1V;
is 8 mA for Figure 5 ’s test circuit.
A
14
= 25˚C unless otherwise specified
= 4V; V
−3 dB
CC
).
16
power on/off cycles.
= 4V; V
V
max condition, V
(Note 5)
Typical
PP
Drive
−70
−60
the signal will swing between 2V DC
= 4V; V
DS012519-3
13
13
(Note 6)
= 2V. This yields the mea-
= 4V. For example, at A
Limit
4
= 4V; V
CC2
(pin 22) also
15
Units
dB
dB
=
V