PRODUCT T OBSOLETE E PRODUC SUBSTITUT POSSIBLE ISL24858 DATASHEET To request the full datasheet, please visit www.intersil.com/products/isl24853a 15-Channel I2C Programmable TFT-LCD Reference Voltage Generator with Dual-Bank, DVR VCOM, and Integrated EEPROM ISL24853A Features The ISL24853A is a 15-channel I2C programmable reference • 15-channel reference voltage outputs, I2C programmable - 14-channel gamma references, 10-bit resolution, with buffered dual-bank outputs - 1-channel VCOM calibrator (“DVR”), 8-bit current-sink DAC voltage generator for TFT-LCDs featuring ultra-low power operation. It features 14 general purpose 10-bit DACs with buffered dual bank outputs, which can be used to set the column driver reference voltages of a TFT-LCD panel (gamma correction). The device also has an 8-bit current-sink DAC for VCOM calibration, and a high output current VCOM amplifier. The integrated EEPROM, for storing all reference voltage data, features an endurance of 10,000 write cycles and is read/write capable over the digital supply voltage range. • High output current VCOM amplifier • Fast output bank switching • Dual bank gamma • EEPROM endurance: 10,000 write cycles - Read/write capable over 2.25V to 3.6V DVDD range The dual bank outputs are capable of fast switching between different sets of voltage reference data. Bank switching is ideal to quickly change between gamma curves for 2D/3D TFT-LCD applications. The device’s outputs are double buffered, which allows for updating data in one bank while data is simultaneously output from the other bank. • 6.3V to 19V analog operating supply range • 2.25V to 3.6V digital operating supply range • 32 Ld 5mmx5mm TQFN package • Pb-free (RoHS compliant) Combining gamma and VCOM reference voltage generators, with low power operation, and EEPROM, the ISL24853A provides a complete reference voltage solution ideal for TFT-LCD applications. Applications The ISL24853A is available in a 32 Ld 5mmx5mm TQFN thermally enhanced package. It is specified for operation over the -40°C to +85°C ambient temperature range. • General-purpose reference voltage generator • HD and FHD TFT-LCD TVs and monitors - Gamma and VCOM • 2D/3D TFT-LCD GAMMA T F T -L C D P A N E L T IM IN G CONTROL (T C O N ) C O L U M N D R IV E R S T F T -L C D S C R E E N IS L 2 4 8 5 3 A G A M M A B U F F E R (C O L U M N D R IV 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 C O M REFERENCE VCOM C A L IB R A TO R V COM D R IV E R DA TA L IN E GATE D R IV E R S SELECT L IN E STORAGE C A P A C IT O R L C P IX E L TFT COMMON (V C O M ) FIGURE 1. TYPICAL APPLICATION: TFT-LCD REFERENCE VOLTAGE GENERATOR March 1, 2013 FN8382.0 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 LLC 2013. All Rights Reserved Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. 2 I C Bus™ is a trademark owned by NXP Semiconductors Netherlands, B.V. All other trademarks mentioned are the property of their respective owners. ISL24853A 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 FN8382.0 March 1, 2013