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

7-Bit, Programmable VCOM Reference System for LCD TVs

Product Details

Key Features

Simplified Block Diagram

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Key Features

  • 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

Applications/Uses

  • Instrumental Control Voltage Source
  • TFT-LCD Panels

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.

Simplified Block Diagram

MAX9660: Functional Diagram MAX9660: Functional Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.