FPD33684A/ FPD33684B

Low Power, Low EMI, TFT-LCD Column Driver with

XGA/SXGA Applications

General Description

The FPD33684 Column Driver is a direct drive, 64 gray level,

interface. It provides the capability to display 262,144 colors

(18-bit color) with a large dynamic output range for twisted

nematic applications. When used in a bank with other

FPD33684 column drivers, the FPD33684 can support both

XGA (8 drivers) or SXGA (10 drivers) applications. Output

voltages are programmably gamma corrected to provide a

direct mapping between digital video and LCD panel bright-

ness.

is used between the timing controller and the column driver

to minimize EMI and reduce power.

The FPD33684 offers a low power, low EMI column driver

solution with direct-drive dynamic range and dot-inversion

addressing.

Features

n

bus for low power, reduced EMI and small PCB foot

print

n

Up to 85MHz clock

n

Supports both XGA and SXGA timing

n

Supports notebook and monitor applications

n

Smart Charge Conservation for low power consumption

n

64 Gray levels per color (18-bit color)

n

Supports both Dot and N-Line inversion

n

Externally programmable gamma characteristic

n

Very low offsets for artifact-free images

n

High voltage outputs for high contrast in a large range of

display panel applications

n

Optional, high current, repair line buffers

n

Available in 2 common gamma reference curves

Ordering Information

Part Number

Gamma Curve

Custom TCP #

Package Suffix

FPD33684

A or B

XX(Note 1)

CT

Note 1: Custom TCP # is assigned by National Semiconductor for each custom TCP design

System Diagram

DS200113-1

May 2002

© 2002 National Semiconductor Corporation

DS200113

www.national.com