R NEW DESIGNS NOT RECOMMENDED FO PLACEMENT NO RECOMMENDED RE pport Center at contact our Technical Su ntersil.com/tsc 1-888-INTERSIL or www.i DATASHEET To request the full datasheet, please visit www.intersil.com/products/isl24832 17-Channel I2C Programmable TFT-LCD Reference Voltage Generator, with Dual Bank Outputs and Integrated EEPROM ISL24832 Features The ISL24832 is a power optimized programmable reference voltage generator for TFT-LCDs. It contains an I2C programmable, 16-channel, 10-bit reference voltage generator with buffered dual bank outputs, an I2C programmable, 1-channel, 10-bit VCOM calibrator with VCOM amplifier, and internal EEPROM. The ISL24832 provides two inputs (REFXIN) to set the high/low reference voltages for the DACs. • 17-Channel Reference Voltage Outputs, I2C Programmable with 10-bit Resolution: There are two output banks capable of fast switching (<1µs) between two different sets of voltage reference data. Bank switching is ideal to quickly change between two gamma curves or operation modes in TFT-LCD applications. The device’s outputs are double buffered, which allows for updating data in one bank while simultaneously outputting data from the other bank. The ISL24832 also integrates two banks of EEPROM storage capable of storing all reference voltage data. The EEPROM is capable of >300 write cycles. - 16-Channel Gamma References, with Buffered Dual Bank Outputs - 1-Channel VCOM Calibrator, with Amplifier Output • Low Power: Ideal for Tablet and Mobile TFT-LCD Applications, IAVDD = 5mA @ 15V • Two Banks of EEPROM: Re-writable >300 times • Fast Output Bank Switching Time: <1µs Typical • 10.8V to 19V Analog Operating Supply Range • 2.25V to 3.6V Digital Operating Supply Range • Pb-free (RoHS Compliant) Applications Combining gamma and VCOM reference voltage generators with low power operation and EEPROM, the ISL24832 provides a complete reference voltage solution ideal for tablet, monitor, and mobile TFT-LCD applications. • TFT-LCD Tablet PC, Monitors • Mobile, 2D/3D TFT-LCD • General-Purpose Reference Voltage Generator The ISL24832 is available in a 32-LD 5x6mm QFN thermally enhanced package. It is specified for operation over the -40°C to +85°C ambient temperature range. GAMMA TFT-LC D PA N EL T IM IN G CONTROL (TCO N ) C O L U M N D R IV E R S TFT-LCD S CR EEN ISL2 4 8 32 G A M M A BU FFER (C O L U M N D R I V E R D A C R E F E R E N C E V O L T A G E S ), A N D V COM R E FE R E N C E S V CO M D R IV E R DATA LIN E G ATE D R IV E R S STORAG E C A P A C IT O R SELECT L IN E LC P IXEL TFT COM M ON (V C O M ) FIGURE 1. TYPICAL APPLICATION: TFT-LCD REFERENCE VOLTAGE GENERATOR February 17, 2011 FN7584.0 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 Inc. 2011. All Rights Reserved Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. I2C Bus™ is a trademark owned by NXP Semiconductors Netherlands, B.V. All other trademarks mentioned are the property of their respective owners. ISL24832 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 FN7584.0 February 17, 2011