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National Semiconductor Electronic Components Datasheet

LM2403 Datasheet

Monolithic Triple 4.5 nS CRT Driver

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LM2403 pdf
August 1999
LM2403
Monolithic Triple 4.5 nS CRT Driver
General Description
The LM2403 is an integrated high voltage CRT driver circuit
designed for use in high resolution color monitor applica-
tions. The IC contains three high input impedance, wide
band amplifiers which directly drive the RGB cathodes of a
CRT. Each channel has its gain internally set to −14 and can
drive CRT capacitive loads as well as resistive loads pre-
sented by 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
on page 5.
Features
n Rise/fall times typically 4.5 nS with 8 pF load at 40 Vpp
n Well matched with LM1283 video preamp
n Output swing capability: 60 Vpp for VCC = 80V
n 1V to 5V input range
n Stable with 0 pF–20 pF capacitive loads and inductive
peaking networks
n Convenient TO-220 staggered lead package style
n Standard LM240X Family Pinout which is designed for
easy PCB layout
Applications
n CRT driver for color monitors with display resolutions up
to 1600 x 1200
n Pixel clock frequency up to 160 MHz
Schematic and Connection Diagrams
DS100082-1
DS100082-2
Top View
Order Number LM2403T
FIGURE 1. Simplified Schematic Diagram (One Channel)
© 1999 National Semiconductor Corporation DS100082
www.national.com


National Semiconductor Electronic Components Datasheet

LM2403 Datasheet

Monolithic Triple 4.5 nS CRT Driver

No Preview Available !

LM2403 pdf
Absolute Maximum Ratings (Notes 1, 2) Operating Range(Note 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
Machine Model
+90V
+16V
−0.5V to VBIAS +0.5V
−65˚C to +150˚C
300˚C
2 kV
250V
VCC
VBB
VIN
VOUT
Case Temperature
+60V to +85V
+8V to +15V
+1V to +5V
+10V to +70V
−20˚C to +100˚C
Do not operate the part without a heat sink.
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to
the device may occur.
Note 2: All voltages are measured with respect to GND, unless otherwise
specified.
Note 3: Operating ratings indicate conditions for which the device is func-
tional, 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 per-
formance characteristics may change when the device is not operated under
the listed test conditions.
Electrical Characteristics
(See Figure 2 for Test Circuit)
Unless otherwise noted: VCC = +80V, VBB = +12 V, VIN = +3.3 VDC, CL = 8 pF, LP = 0.22 µH, Output = 40 VPP at 1 MHz, TA =
25˚C.
Symbol
ICC
IBB
VOUT
AV
AV
LE
tR
tF
OS
Parameter
Supply Current
Bias Current
DC Output Voltage
DC Voltage Gain
Gain Matching
Linearity Error
Rise Time
Fall Time
Overshoot
Condition
Per Channel, No Output Load
All Three Channels
No AC Input Signal, VIN = 2.8 V
No AC Input Signal
(Note 4), No AC Input Signal
(Notes 4, 5), No AC Input Signal
10% to 90%
90% to 10%
Min
48
−12
LM2403
Typical
26
11.5
52
−14
1.0
3.5
4.5
4.5
3
Max
56
−16
Units
mA
mA
VDC
dB
%
nS
nS
%
Note 4: Calculated value from Voltage Gain test on each channel.
Note 5: Linearity Error is the variation in dc gain from VIN = 1.5V to VIN = 5V.
Note 6: Input from signal generator: tr, tf < 1 nS.
AC Test Circuit
FIGURE 2. Test Circuit (One Channel)
DS100082-3
Figure 2 shows a typical test circuit for evaluation of the LM2403. This circuit is designed to allow testing of the LM2403 in a 50
environment without the use of an expensive FET probe. The 4950resistor at the output forms a 100:1 voltage divider when
connected to a 50load.
www.national.com
2


Part Number LM2403
Description Monolithic Triple 4.5 nS CRT Driver
Maker National Semiconductor
Total Page 11 Pages
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