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MAX5679

Maxim
Part Number MAX5679
Manufacturer Maxim
Description Digitally Programmable LCD Gamma Reference Generator
Published Oct 24, 2014
Detailed Description 19-4058; Rev 0; 3/08 Digitally Programmable LCD Gamma Reference Generator with Digital Voltage Reference General Descri...
Datasheet PDF File MAX5679 PDF File

MAX5679
MAX5679

Overview
19-4058; Rev 0; 3/08 Digitally Programmable LCD Gamma Reference Generator with Digital Voltage Reference General Description The MAX5679 digitally programmable LCD gamma reference generator provides 18 buffered channels for biasing LCD column drivers.
The device provides 14 outputs of 8-bit programmable gamma reference voltage derived from four externally applied reference voltages, and four buffered outputs of the same externally applied reference voltages.
An I2C serial interface programs the 14 upper and lower range gamma buffer outputs independently.
The MAX5679 features a digitally programmable voltage reference (DVR) with 7-bit adjustable current sink to set the LCD common backplane (VCOM) voltage.
The MAX5679 includes a power-on reset (POR) function that configures all 14 programmable gamma outputs to predetermined levels upon initial power-up.
The MAX5679 is available in a 5mm x 5mm, 32-pin TQFN package and is specified over the -40°C to +85°C extended temperature range.
Features ♦ 7-Bit Adjustable VCOM Calibrator (DVR) ♦ 14 Programmable Gamma Outputs for LCD Column Driver ICs 8-Bit DAC Resolution for Upper and Lower Range Outputs Maximum Output Swing of (AVDD - 0.
2V) (OUT1–OUT7) Minimum Output Swing of (GND + 0.
2V) (OUT8–OUT14) ♦ Four Independent Reference Inputs ♦ Four Independent Buffered Reference Outputs ♦ 9V to 16.
5V Analog Supply ♦ 2V to 5.
5V Digital Supply ♦ 400kHz I2C-Compatible Serial Interface ♦ Pin-Selectable I2C Address Bit Allows Two Slave IDs ♦ Backward Compatible with the MAX5678 MAX5679 Applications TFT-LCD Panels for Flat Screen TVs TFT-LCD Panels for Desktop Monitors MAX5679ETJ+ PART Ordering Information TEMP RANGE -40°C to +85°C PINPACKAGE 32 TQFN-EP* (5mm x 5mm) PKG CODE T3255+4 Pin Configuration TOP VIEW OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 OUT_REFU_L +Denotes a lead-free package.
*EP = Exposed pad.
Gamma DAC Transfer Function REFU_H 32 OUT_REFU_H AVDD DVDD A0 SDA SCL GND OUT_REFL_L 1 2 3 4 5 6 7 8 9 OUT14 31 30 29 28 27 26...


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