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National Semiconductor Electronic Components Datasheet

LM2471 Datasheet

Monolithic Triple 4 ns High Swing CRT Driver

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LM2471 pdf
July 2004
LM2471
Monolithic Triple 4 ns High Swing CRT Driver
General Description
The LM2471 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 −27 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 11-lead TO-220
molded plastic power package. See Thermal Considerations
section for more information.
n 0V to 3.4V 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 LM24XX Family pinout which is
designed for easy PCB layout
Applications
n 1600 x 1200 displays up to 70 Hz refresh
n Pixel clock frequencies up to 180 MHz
n Monitors using video blanking
Features
n Well-matched to the LM126X preamplifiers
n Higher gain for high brightness applications
Schematic and Connection Diagrams
www.DataSheet4U.com
20103701
FIGURE 1. Simplified Schematic Diagram
(One Channel)
Note: Tab is at GND
20103702
Top View
Order Number LM2471TA
© 2004 National Semiconductor Corporation DS201037
www.national.com


National Semiconductor Electronic Components Datasheet

LM2471 Datasheet

Monolithic Triple 4 ns High Swing CRT Driver

No Preview Available !

LM2471 pdf
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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)
Lead Temperature
(Soldering, <10 sec.)
ESD Tolerance, Human Body
Model
96V
10V
0V to 4.5V
−65˚C to +150˚C
300˚C
2kV
Machine Model
200V
Operating Ranges (Note 2)
VCC
VBB
VIN
VOUT
Case Temperature
60V to 85V
7V to 9V
0V to 3.4V
15V to VCC
−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 = 85V, VBB = 8V, CL = 8pF, TC = 50˚C
DC Tests: VIN = 2.35VDC
AC Tests: Output = 40VP-P (35V–75V) 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 AC Input
Signal, No Output Load
All Three Channels
No AC Input Signal, VIN = 1.10V
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)
LM2471
Min Typical Max
60
32
73 78 83
−24 −27 −30
1.0
5
4.0
4.0
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. Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis. 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 = 1.1V to VIN = 3.6V.
Note 6: Input from signal generator: tr, tf < 1 ns.
Note 7: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
www.national.com
2


Part Number LM2471
Description Monolithic Triple 4 ns High Swing CRT Driver
Maker National Semiconductor
Total Page 10 Pages
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