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BUF20820AIDCPR датащи(PDF) 1 Page - Burr-Brown (TI) |
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BUF20820AIDCPR датащи(HTML) 1 Page - Burr-Brown (TI) |
1 / 32 page FEATURES D 18-CHANNEL GAMMA CORRECTION D 2-CHANNEL PROGRAMMABLE V COM: 100mA IOUT D ON-CHIP OTP MEMORY D 10-BIT RESOLUTION D RAIL-TO-RAIL OUTPUT D LOW SUPPLY CURRENT: 900µA/ch D SUPPLY VOLTAGE: 7V to 18V D DIGITAL SUPPLY: 2.0V to 5.5V D INDUSTRY-STANDARD, TWO-WIRE INTERFACE: 3.4MHz HIGH-SPEED MODE D HIGH ESD RATING: 4kV HBM, 1kV CDM, 200V MM D DEMO BOARD AND SOFTWARE AVAILABLE REFH OUT 7V−18V 2V−5.5V REFL AO LD SCL SDA OUT 1 OUT 18 REFL OUT OUT 2 OUT 17 VCOM OUT1 VCOM OUT2 Control IF 18 Output Channels plus Two VCOM Channels BUF20820 Digital Analog REFH APPLICATIONS D REPLACES RESISTOR-BASED GAMMA SOLUTIONS D TFT-LCD REFERENCE DRIVERS D DYNAMIC GAMMA CONTROL DESCRIPTION The BUF20820 is a programmable voltage reference generator designed for gamma correction in TFT-LCD panels. It provides 18 programmable outputs for gamma correction and two channels for VCOM adjustment, each with 10-bit resolution. It offers on-chip One-Time Programmable (OTP) memory that allows the user to store the gamma voltages on-chip. This eliminates the need for an external EEPROM. This programmability replaces the traditional, time- consuming process of changing resistor values to optimize the various gamma voltages and allows designers to determine the correct gamma voltages for a panel very quickly. Required voltage changes can also be easily implemented without hardware changes. The BUF20820 uses TI’s latest, small-geometry analog CMOS process, which makes it a very competitive choice for full production, not just evaluation. Programming of each output occurs through an industry- standard, two-wire serial interface. Unlike existing programmable buffers, the BUF20820 offers a high-speed mode that allows clock speeds up to 3.4MHz. For lower or higher channel count, please contact your local sales or marketing representative. The BUF20820 is available in an HTSSOP-38 PowerPAD package. It is specified from −40°C to +85°C. BUF20820 RELATED PRODUCTS FEATURES PRODUCT 18-Channel Programmable, Two VCOM BUF20800 12-Channel Programmable Buffer, 10-Bit BUF12800 Programmable VCOM with Memory BUF01900 10-Channel Gamma Correction Buffer, Int VCOM, 18V Operating Supply Voltage BUF11704 High-Speed VCOM, 1 and 2 Channels SN10501 Complete LCD DC/DC Solution TPS651xx BUF20820 SBOS330C − DECEMBER 2005 − REVISED OCTOBER 2006 18-Channel GAMMA VOLTAGE GENERATOR with Two Programmable VCOM Channels PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. www.ti.com Copyright 2005−2006, Texas Instruments Incorporated Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PowerPAD is a registered trademark of Texas Instruments. All other trademarks are the property of their respective owners. |
Аналогичный номер детали - BUF20820AIDCPR |
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Аналогичное описание - BUF20820AIDCPR |
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