LM2481

145V Triple Bias Clamp

General Description

The LM2481 driver is an Integrated 145V triple bias clamp

circuit for DC recovery of each of the AC coupled outputs of

a HDTV CRT driver. It is well matched with the DAC outputs

of the LM126X family of pre-amplifiers. Each amplifier has its

gain internally set to -20. The LM2481 is packaged in an

industry standard 14 lead molded plastic dual-in-line pack-

age.

Features

n

Wide range integrated triple bias clamp

n

High input impedance

n

Matched to LM2421 HDTV Driver

Applications

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AC coupled HDTV applications using the 1080i and

720p formats

Schematic and Connection Diagrams

20039833

Top View

Order Number LM2481NA

20039832

FIGURE 1. Simplified Schematic Diagram (One Channel)

June 2002

© 2002 National Semiconductor Corporation

DS200398

www.national.com