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MAX8738

Maxim Integrated Products
Part Number MAX8738
Manufacturer Maxim Integrated Products
Description EEPROM-Programmable TFT VCOM Calibrator
Published Sep 4, 2008
Detailed Description 19-3624; Rev 0; 3/05 KIT ATION EVALU LE B A IL A AV EEPROM-Programmable TFT VCOM Calibrator with I2C Interface General...
Datasheet PDF File MAX8738 PDF File

MAX8738
MAX8738


Overview
19-3624; Rev 0; 3/05 KIT ATION EVALU LE B A IL A AV EEPROM-Programmable TFT VCOM Calibrator with I2C Interface General Description Features ♦ 7-Bit Adjustable Sink-Current Output ♦ Resistor-Adjustable, Full-Scale Range ♦ Guaranteed Monotonic Output Over Operating Range ♦ 2-Wire I2C Interface ♦ EEPROM Stores VCOM Setting ♦ 4.
5V to 20V Analog Supply Voltage Range (VAVDD) ♦ 60µA (max) AVDD Supply Current ♦ 16.
1V to 28V EEPROM Programming Supply Voltage Range (VHV) ♦ <1µA HV Supply Current (Not in Program Mode) ♦ 8-Pin µMAX MAX8738 The MAX8738 is an I2C-programmable VCOM-adjustment solution for thin-film transistor (TFT) liquid-crystal displays (LCDs).
The MAX8738 simplifies the labor-intensive VCOM-adjustment process and replaces mechanical potentiometers, which significantly reduces labor costs, increases reliability, and enables automation.
The MAX8738 attaches to an external resistive voltagewww.
DataSheet4U.
com divider and sinks a programmable current to set the VCOM voltage level.
An internal 7-bit digital-to-analog converter (DAC) controls the sink current.
The DAC is ratiometric relative to AVDD and is guaranteed to be monotonic over all operating conditions.
This VCOM calibrator IC includes an EEPROM to store the desired VCOM voltage level.
The EEPROM can be programmed repeatedly, giving TFT LCD manufacturers the flexibility to calibrate the display panel as many times as the manufacturing process requires.
The MAX8738 features a 2-wire I2C* interface for DACadjustment commands and EEPROM programming.
The interface utilizes the existing I2C bus on the LCD panel connector so no additional panel connector pins are required.
The MAX1512 is a similar product with a 1-wire interface and is recommended for applications with no existing I2C interface.
The MAX8738 is available in an 8-pin µMAX® package.
A complete evaluation kit is available to simplify evaluation and production development.
Ordering Information PART MAX8738EUA MAX8738EUA+ TEMP RANGE -40oC to +85oC...


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