Datasheet > LM2476

LM2476

更新时间： 2024-09-19 22:51:47

品牌	Logo	应用领域
美国国家半导体 - NSC		驱动器
页数	文件大小	规格书
12页	1233K
描述
Monolithic Triple Channel 6.5 ns High Gain CRT Driver and Bias Clamp

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LM2476 数据手册

January 2004

LM2476

Monolithic Triple Channel 6.5 ns High Gain CRT Driver

and Bias Clamp

n Convenient TO-247 staggered lead package style

General Description

CRT Drivers

n High gain of –27 for up to 60V_P-Poutput swing

n Stable with capacitive loads and inductive peaking

networks

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 cou-

pling 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.

Bias Clamps

n Gain of –17 for up to 60V DC output range

Applications

n 1024 x 768 displays up to 85 Hz refresh rate

n Pixel clock frequencies up to 95 MHz

n Monitors using video blanking

The IC is packaged in a 19-lead TO-247 molded plastic

package and must be operated with a properly chosen heat

sink. See the Package Mounting and Thermal Consider-

ations sections for more information.

Features

n Well-matched to the LM123X/4X family of preamplifiers

n Operates with V_CC= 60V to 90V

Pinout Diagram and Pin Descriptions

Pin Name

IND

Pin Description

Driver Input Pins (1, 3, 4)

Clamp Input Pins (6, 7, 8)

Bias Voltage Pin (2)

INC

V_BB

V_CC

Supply Voltage Pin (14)

Ground Pins (5, 10, 12, 16, 18)

Clamp Output Pins (9, 11, 13)

Driver Output Pins (15, 17, 19)

GND*

OUTC

OUTD

*Note: All GND pins should be connected together via low HF impedance

traces on the PCB.

20121901

Note: Tab is at GND

FIGURE 1. Pinout and Connection Diagram

DS201219

www.national.com

12 3 4 5 6 7...12

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