GENERAL DESCRIPTION

The ADD8504, ADD8505, and ADD8506 are 4-, 5-, and 6-channel LCD gamma reference buffers designed to drive column driver gamma inputs in line inversion panels. Each buffer channel has an A/B input to select between two gamma voltage curves. These buffer channels drive the resistor ladders of LCD column drivers for gamma correction. The ADD8504/ADD8505/ADD8506 outputs have high slew rates and output drives that increase the stability of the reference ladder resulting in optimal gray scale and visual performance.

FEATURES

Single-supply operation: 3.3 V to 6.5 V

Rail-to-rail input, rail-to-rail output

High output current: 380 mA

Low supply current: 3.9 mA

Stable with 1 nF loads

Wide temperature range: −40°C to +105°C

16-, 20-, and 24-lead, Pb-free, TSSOP packages

APPLICATIONS

LCD line inversion gamma references

Car navigation panels

Personal media player panels