DS3510 I²C Gamma and VCOM Buffer with EEPROM

Programmable Voltage Generator With EEPROM

Status

Active: In Production.

Description

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The DS3510 is a programmable gamma and V_COM voltage generator which supports both real-time updating as well as multibyte storage of gamma/V_COM data in on-chip EEPROM memory. An independent 8-bit DAC, two 8-bit data registers, and 4 bytes of EEPROM memory are provided for each individually addressable gamma or V_COM channel. High-performance buffer amplifiers are integrated on-chip, providing rail-to-rail, low-power (400µA/gamma channel) operation. The V_COM channel features a high-current drive (> 250mA peak) and a fast-settling buffer amplifier optimized to drive the V_COM node of a wide range of TFT-LCD panels.

Programming occurs through an I²C-compatible serial interface. Interface performance and flexibility are enhanced by a pair of independently loaded data registers per channel, as well as support for I²C speeds up to 400kHz. The multitable EEPROM memory enables a rich variety of display system enhancements, including support for temperature or light-level-dependent gamma tables, enabling of factory or field automated display adjustment, and support for backlight dimming algorithms to reduce system power. Upon power-up and depending on mode, DAC data is selected from EEPROM by the S0/S1 pads or from a fixed memory address.

Key Features		Applications/Uses
8-Bit Gamma Buffers, 10 Channels 8-Bit V_COM Buffer, 1 Channel 4 EEPROM Bytes per Channel Low-Power 400µA/ch Gamma Buffers I²C-Compatible Serial Interface Flexible Control from I²C or Pins 9.0V to 15.0V Analog Supply 2.7V to 5.5V Digital Supply 48-Pin Package (TQFN 7mm x 7mm)		Adaptive Gamma and V_COM Adjustment (Real-Time by I²C, Select EEPROM Through I²C or S0/S1 Pads) Industrial Process Control TFT-LCD Gamma and V_COM Buffer