Datasheet > LM2451TB

LM2451TB

更新时间： 2024-09-20 11:34:03

品牌	Logo	应用领域
美国国家半导体 - NSC		电视驱动
页数	文件大小	规格书
12页	1106K
描述
220V Monolithic Triple Channel 12 MHz DC Coupled CRT DTV Driver

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LM2451TB 数据手册

December 2005

LM2451

220V Monolithic Triple Channel 12 MHz DC Coupled CRT

DTV Driver

General Description

Features

n 12 MHz bandwidth at 130V_P-P

The LM2451 is a triple channel high voltage DC coupled

CRT driver circuit designed for use in DTV applications. The

IC contains three high input impedance, wide band amplifi-

ers which directly drive the RGB cathodes of a CRT. Each

amplifier has a summing input where the DC level of the

output is controlled by a low voltage DC input voltage. Nor-

mally the DC input voltage is from a DAC. Each channel has

its gain internally set to −54 and can drive CRT capacitive

loads as well as resistive loads present in other applications,

limited only by the package’s power dissipation.

n 100V black level adjustment range using 0V to 5V input

n Current output for IK feedback systems

n Greater than 130V_P-Poutput swing capability

n 0V to 5V input voltage range

n Stable with 0 pF–20 pF capacitive loads and inductive

peaking networks

n Convenient TO-247 staggered thin lead package style

Applications

The IC is packaged in a 15-lead TO-247 molded plastic

power package designed specifically to meet high voltage

spacing requirements. See Thermal Considerations section.

n DC coupled DTV applications using the 480p format as

well as standard NTSC and PAL formats.

Connection Diagram

Schematic Diagram

20144401

20144402

FIGURE 1. Top View

Order Number LM2451TB

See NS Package Number TB15A

FIGURE 2. Simplified Schematic Diagram

(One Channel)

DS201444

www.national.com

12 3 4 5 6 7...12

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