Features
- 18-channel I2C programmable 10-bit DACs
- Integrated I2C programmable 8-bit VCOM calibrator
- One VCOM op amp
- Two banks of EEPROM storage (rewriteable >300 times)
- Fast output bank switching: <1µs typical
- Analog supply: 12V to 18V at 15mA (unloaded)
- Digital supply: 2.5V to 3.3V at 1.3mA (unloaded)
- I2C serial interface
- Pb-free (RoHS compliant)
Description
The ISL24833 is an 18-channel, 10-bit I2C programmable reference voltage generator for TFT-LCDs with dual bank outputs. It also provides an I2C programmable, 1-channel, 8-bit VCOM calibrator with VCOM amplifier and internal EEPROM. The two output banks are capable of switching quickly (<1µs) enabling rapid switching between two gamma curves (or operational modes) in TFT-LCD applications. The ISL24833 also integrates two banks of EEPROM that can store all reference voltage data. The EEPROM is capable of >300 write cycles. Combining gamma and VCOM reference voltage generators with low power operation and EEPROM, the ISL24833 provides a complete reference voltage solution ideal for large area TFT-LCD display applications. The ISL24833 is available in a 32 Ld 5mmx6mm QFN thermally enhanced package. It is specified for operation across the -40°C to +85°C temperature range.
Applications
- TFT-LCD Column Driver Reference Generator
- TFT-LCD VCOM Calibrator and Driver
- General-Purpose Reference Voltage Generators
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