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MAX9660

Obsolete

7-Bit, Programmable VCOM Reference with 30x OTP Memory

7-Bit, Programmable VCOM Reference System for LCD TVs

Data Sheet (Rev. 0) Product Selection Table

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Overview

VCOM Amplifier with 900mA Peak Output Current
Integrated Nonvolatile Memory to Store VCOM Setting
7-Bit, Adjustable Sink-Current Device
Resistor-Adjustable, Full-Scale Range
2.5V to 3.6V Logic Supply Range
8V to 20V Analog Supply Range

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.

Applications