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MAX9660 - Programmable VCOM Reference

General Description

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

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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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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MAX9660 19-4564; Rev 0; 4/09 EVAALVUAAILTAIOBNLEKIT 7-Bit, Programmable VCOM Reference with 30x MOTP Memory 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. The chip supports up to 30 write operations to MOTP memory. The MAX9660 has an I2C interface to set the VCOM reference voltage and write into MOTP memory.