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MAX9660 Datasheet Programmable VCOM Reference

Manufacturer: Maxim Integrated (now Analog Devices)

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General Description

The MAX9660 provides a programmable reference voltage for VCOM adjustment in TFT-LCD panels.

A 7-bit, current digital-to-analog converter (DAC) sinks current from an external resistor-divider string to create the VCOM reference voltage, which then serves as the input to a voltage buffer capable of driving out high current.

The MAX9660 includes multiple one-time programmable (MOTP) memory to store the DAC code on the chip, eliminating the need for external EEPROM.

Overview

MAX9660 19-4564; Rev 0; 4/09 EVAALVUAAILTAIOBNLEKIT 7-Bit, Programmable VCOM Reference with 30x MOTP Memory.

Key Features

  • o VCOM Amplifier with 900mA Peak Output Current o Integrated Nonvolatile Memory to Store VCOM Setting o 7-Bit, Adjustable Sink-Current Device o Resistor-Adjustable, Full-Scale Range o 2.5V to 3.6V Logic Supply Range o 8V to 20V Analog Supply Range Pin Configuration SET SCL SDA DVDD TOP VIEW 8765 MAX9660 + 1234 OUT AVDD VCOM GND TDFN Functional Diagram DVDD SDA I2C AND MOTP 7.

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