ISL24005
14-Channel Programmable I²C TFT-LCD Reference Voltage Generator with Integrated 4-Channel Static Gamma Drivers and Integrated Programmable Vcom Calibrator

Key Features

• 14-Channel programmable
• Integrated Programmable Vcom Calibrator
• 4-Channel static
• Programmable with 20mV resolution
• Digital supply 3.3V
• Supply current of 10mA (without load)
• I²C interface
• RoHS compliant

Description

The ISL24005 is a 14-Channel programmable reference voltage generator with four channels of static gamma drivers and programmable Vcom calibrator integrated, for a complete 18-Channel total gamma solution for TFT-LCD displays.

The ISL24005 is divided into two banks of seven generators: one designed to cover the range from V_{REFL_L} to V_{REFL_H}; the remaining seven channels covering the range from V_{REFU_L} to V_{REFU_H}. Each bank has its own separate high and low reference inputs, with integrated buffers (four static gamma drivers) to drive the column driver internal DAC resistor string to within 0.2V from the top and bottom rails.

ISL24005 includes an I²C interface for programming the offset values.

ISL24005 is available in the 32 Ld Thin QFN package and is specified for operation over the -40°C to +85°C temperature range.

Applications

• TFT-LCD drive circuits
• Reference voltage generators