R NEW DESIGNS NOT RECOMMENDED FO PLACEMENT NO RECOMMENDED RE pport Center at contact our Technical Su ntersil.com/tsc w.i 1-888-INTERSIL or ww DATASHEET To request the full datasheet, please visit www.intersil.com/products/isl24822 Programmable 14-Channel x 2 Bank, 10-bit TFT-LCD VREF Generator with Buffered VCOM Calibrator ISL24822 Features The ISL24822 is a programmable 14-Channel, 10-bit reference voltage generator with a digitally-controlled VCOM Calibrator and op amp. Two selectable banks of 14 channels allow fast hardware or software switching between 2 different gamma curves. The ISL24822 is configured and controlled via a standard I2C Interface. • 14 I2C-programmable 10-bit DACs • Integrated programmable VCOM calibrator • VCOM op amp • 2 Banks of volatile memory for DACs • 4.5V to 19V analog supply range The ISL24822 is available in a 32 Ld TQFN package and is specified for operation over the -40°C to +85°C temperature range. • 2.25V to 3.6V digital supply range Applications • 700µA digital supply current • TFT-LCD column driver reference generator • Pb-free (RoHS compliant) • 20mA analog supply current (unloaded) • I2C serial interface • General-purpose reference voltage generators GAMMA TFT-LCD PANEL TIMING CONTROL (TCON) COLUMN DRIVERS TFT-LCD SCREEN ISL24822 GAMMA BUFFER (COLUMN DRIVER DAC REFERENCE VOLTAGES) VCOM CALIBRATOR VCOM DRIVER GATE DRIVERS DATA LINE SELECT LINE STORAGE CAPACITOR LC PIXEL TFT COMMON (V COM ) FIGURE 1. TYPICAL APPLICATION: TFT-LCD REFERENCE VOLTAGE GENERATOR November 6, 2014 FN6664.2 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2008, 2011, 2014. All Rights Reserved Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. ISL24822 For additional products, see www.intersil.com/en/products.html Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted in the quality certifications found at www.intersil.com/en/support/qualandreliability.html Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com Submit Document Feedback 2 FN6664.2 November 6, 2014