ISL24837A
Programmable TFT-LCD VREF Generator

Key Features

• 8 Programmable 10-bit Gamma Voltages with Bandgap-Trimmed Reference
• 4-Channel, 10-bit Programmable Amps with Feedback Inputs for Level Shifter Reference Voltages
• Integrated Programmable V_COM Calibrator
• 1 V_COM Op Amp
• 2 Banks of EEPROM Storage, Rewriteable >300 Times
• 10-bit Resolution on all DACs
• 20ms DAC Loading Time at Power-On
• Analog Supply: 12V to 18V @ 15mA (Unloaded)
• Digital Supply: 2.5V to 3.3V @ 1mA (Unloaded)
• I²C Interface
• Pb-free (RoHS Compliant)

Description

The ISL24837A contains a programmable 10-bit, 8-channel gamma DAC generator, a programmable 10-bit, 4-channel level shifter reference generator with external gain control, a trimmed bandgap voltage reference, and a digitally-controlled V_COM calibrator.

Applications

• TFT-LCD Column Driver Reference Generator
• General-Purpose Reference Voltage Generators