OBSOLETE
LM2476
www.ti.com
SNOSAH7B –JANUARY 2004–REVISED APRIL 2013
LM2476 Monolithic Triple Channel 6.5 ns High Gain CRT Driver and Bias Clamp
Check for Samples: LM2476
1
FEATURES
DESCRIPTION
The LM2476 is a monolithic triple channel CRT driver
and triple bias clamp for low-cost color monitor
applications. The highly integrated IC contains three
wide-band amplifiers for driving the RGB cathodes of
a CRT through external coupling capacitors and three
low-band clamp amplifiers for DC restoration and
cutoff adjustment of the video outputs. The CRT
drivers have a high, fixed gain of -27 and can drive
CRT capacitive loads as well as resistive loads
present in other applications, limited only by the
package's power dissipation.
2
•
Well-Matched to the LM123X/4X Family of
Preamplifiers
•
•
Operates with VCC = 60V to 90V
Convenient TO-220 Staggered Lead Package
Style
•
CRT Drivers
–
High Gain of –27 for up to 60VP-P Output
Swing
–
Stable with Capacitive Loads and Inductive
Peaking Networks
The IC is packaged in a 19-lead TO-220 molded
plastic package and must be operated with a properly
chosen heat sink. See the Package Mounting and
•
Bias Clamps
Gain of –17 for up to 60V DC Output Range
–
Thermal
Considerations
sections
for
more
information.
APPLICATIONS
•
•
•
1024 x 768 Displays up to 85 Hz Refresh Rate
Pixel Clock Frequencies up to 95 MHz
Monitors Using Video Blanking
Pinout Diagram and Pin Descriptions
Pin Name Pin Description
IND
Driver Input Pins (1, 3, 4)
Clamp Input Pins (6, 7, 8)
INC
19
18
17
16
15
14
13
12
11
10
9
V
CC
OUTD1
GND
VBB
Bias Voltage Pin (2)
VCC
Supply Voltage Pin (14)
OUTD2
GND
V
BB
GND(1)
OUTC
OUTD
Ground Pins (5, 10, 12, 16, 18)
Clamp Output Pins (9, 11, 13)
Driver Output Pins (15, 17, 19)
OUTD3
CRT DRIVER
1 CH
V
CC
V
CC
OUTC1
GND
OUTC2
GND
V
BB
OUTC3
INC3
BIAS CLAMP
1 CH
8
7
INC2
6
INC1
GND
5
4
IND3
IND2
3
2
V
BB
1
IND1
Note: Tab is at GND
19 Pin TO-220 Package
See Package Number NDN
(1) Note: All GND pins should be connected together via low HF
impedance traces on the PCB.
1
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2004–2013, Texas Instruments Incorporated