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National Semiconductor Electronic Components Datasheet

LM2467 Datasheet

Monolithic Triple 7.5 ns CRT Driver

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LM2467 pdf
October 2000
LM2467
Monolithic Triple 7.5 ns CRT Driver
General Description
The LM2467 is an integrated high voltage CRT driver circuit
designed for use in color monitor applications. The IC con-
tains three high input impedance, wide band amplifiers
which directly drive the RGB cathodes of a CRT. Each
channel has its gain internally set to −20 and can drive CRT
capacitive loads as well as resistive loads present in other
applications, limited only by the package’s power dissipation.
The IC is packaged in an industry standard 9-lead TO-220
molded plastic power package. See Thermal Considerations
section.
Features
n Higher gain to match LM126X CMOS preamplifiers
n 0V to 3.75V input range
n Stable with 0–20 pF capacitive loads and inductive
peaking networks
n Convenient TO-220 staggered lead package style
n Maintains standard LM243X Family pinout which is
designed for easy PCB layout
Applications
n 1024 x 768 displays up to 85 Hz refresh
n Pixel clock frequencies up to 95 MHz
n Monitors using video blanking
Schematic and Connection Diagrams
DS200078-1
FIGURE 1. Simplified Schematic Diagram
(One Channel)
DS200078-2
Note: Tab is at GND
Top View
Order Number LM2467T
© 2000 National Semiconductor Corporation DS200078
www.national.com


National Semiconductor Electronic Components Datasheet

LM2467 Datasheet

Monolithic Triple 7.5 ns CRT Driver

No Preview Available !

LM2467 pdf
Absolute Maximum Ratings (Notes 1, 3)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (VCC)
Bias Voltage (VBB)
Input Voltage (VIN)
Storage Temperature Range (TSTG)
+90V
+16V
0V to 4.5V
−65˚C to +150˚C
Lead Temperature
(Soldering, <10 sec.)
ESD Tolerance, Human Body Model
Machine Model
300˚C
2 kV
250V
Operating Ranges (Note 2)
VCC
VBB
VIN
VOUT
Case Temperature
+60V to +85V
+8V to +15V
+0V to +3.75V
+15V to +75V
−20˚C to +100˚C
Do not operate the part without a heat sink.
Electrical Characteristics
(See Figure 2 for Test Circuit)
Unless otherwise noted: VCC = +80V, VBB = +12V, CL = 8 pF, TC = 50˚C
DC Tests: VIN = 2.25VDC
AC Tests: Output = 40VPP(25V - 65V) at 1MHz
Symbol
Parameter
Conditions
ICC
IBB
VOUT
AV
AV
LE
tR
tF
OS
Supply Current
Bias Current
DC Output Voltage
DC Voltage Gain
Gain Matching
Linearity Error
Rise Time
Fall Time
Overshoot
All Three Channels, No Input Signal,
No Output Load
All Three Channels
No AC Input Signal, VIN = 1.25V
No AC Input Signal
(Note 4), No AC Input Signal
(Notes 4, 5), No AC Input Signal
(Note 6), 10% to 90%
(Note 6), 90% to 10%
(Note 6)
LM2467
Min Typical Max
30
18
62 65 68
−18 −20 −22
1.0
5
7.5
8
5
Units
mA
mA
VDC
dB
%
ns
ns
%
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
change when the device is not operated under the listed test conditions.
Note 3: All voltages are measured with respect to GND, unless otherwise specified.
Note 4: Calculated value from Voltage Gain test on each channel.
Note 5: Linearity Error is the variation in dc gain from VIN = 1.0V to VIN = 3.5V.
Note 6: Input from signal generator: tr, tf < 1 ns.
www.national.com
2


Part Number LM2467
Description Monolithic Triple 7.5 ns CRT Driver
Maker National Semiconductor
Total Page 12 Pages
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