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6/8/10-Channel, 10-Bit, Nonvolatile Programmable Gamma and VCOM Reference Voltages

Integrated Nonvolatile Programmable Gamma and VCOM Reference System for LCDs

Product Details

Key Features

Simplified Block Diagram

Technical Docs

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Key Features

  • 6/8/10 Channels Gamma Correction, 10-Bit Resolution
  • VCOM Driver
  • Integrated Multiple-Time Programmable Memory
  • DAC Reference Input
  • Single-Wire and I²C Programming of VCOM Reference
  • 950mA Peak Transient Current on VCOM Channel

Applications/Uses

  • TFT LCDs

Description

The MAX9665/MAX9666/MAX9667 provide multiple programmable reference voltages for gamma correction in TFT LCDs and a programmable reference voltage for VCOM adjustment. All gamma and VCOM reference voltages have a 10-bit digital-to-analog converter (DAC) and buffer with high peak current. This reduces the recovery time of the output voltage when critical levels and patterns are displayed.

These devices include multiple-time programmable (MTP) memory to store gamma and VCOM codes on the chip, eliminating the need for external EEPROM. The MTP memory supports up to 300 write operations.

The MAX9665/MAX9666/MAX9667 feature an I²C interface to control the programmable reference voltages and a single-wire interface to toggle the VCOM reference voltage up or down.

Simplified Block Diagram

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 .