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LM2476-LM2476TB
Monolithic Triple Channel 6.5 ns High Gain CRT Driver and Bias Clamp
LM2476
Monolithic Triple Channel 6.5 ns High Gain CRT Driver
and Bias Clamp
General DescriptionThe LM2476isa monolithic triple channel CRT driver and
triple bias clampfor low-cost color monitor applications. The
highly integratedIC contains three wide-band amplifiersfor
driving the RGB cathodesofa CRT through external cou-
pling capacitors and three low-band clamp amplifiersfor DC
restoration and cutoff adjustmentof the video outputs. The
CRT drivers havea high, fixed gainof-27 and can drive CRT
capacitive loadsas wellas resistive loads presentin other
applications, limited onlybythe package’s power dissipation.
TheICis packagedina 19-lead TO-247 molded plastic
package and mustbe operated witha properly chosen heat
sink. See the Package Mounting and Thermal Consider-
ations sectionsfor more information.
Features Well-matchedtothe LM123X/4X familyof preamplifiers Operates with VCC= 60Vto 90V Convenient TO-247 staggered lead package style
CRT Drivers High gainof –27forupto 60VP-P output swing Stable with capacitive loads and inductive peaking
networks
Bias Clamps Gainof –17forupto 60V DC output range
Applications 1024x 768 displaysupto85Hz refresh rate Pixel clock frequenciesupto95 MHz Monitors using video blanking
Pinout Diagram and Pin Descriptions
Pin Name Pin DescriptionIND Driver Input Pins(1,3,4)
INC Clamp Input Pins(6,7,8)
VBB Bias Voltage Pin(2)
VCC Supply Voltage Pin (14)
GND* Ground Pins(5,10, 12,16, 18)
OUTC Clamp Output Pins(9, 11,13)
OUTD Driver Output Pins (15,17, 19)
*Note:All GNDpins shouldbe connected togethervialowHF impedance
tracesonthe PCB.
Note:Tabisat GND
FIGURE1. Pinout and Connection DiagramJanuary 2004
LM2476
Monolithic
riple
Channel
High
Gain
CRT
Driver
and
Bias
Clamp
