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BUF12800

更新时间： 2024-11-22 11:14:43
品牌 Logo 应用领域
德州仪器 - TI 电压发生器
页数 文件大小 规格书
27页 1194K
描述
12 通道伽马电压发生器

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BUF12800 数据手册

 浏览型号BUF12800的Datasheet PDF文件第2页浏览型号BUF12800的Datasheet PDF文件第3页浏览型号BUF12800的Datasheet PDF文件第4页浏览型号BUF12800的Datasheet PDF文件第5页浏览型号BUF12800的Datasheet PDF文件第6页浏览型号BUF12800的Datasheet PDF文件第7页 
BUF12800  
SBOS315D − DECEMBER 2004 − REVISED DECEMBER 2007  
REFERENCE VOLTAGE GENERATOR  
for LCD GAMMA CORRECTION  
FD EATURES  
AD PPLICATIONS  
12-CHANNEL GAMMA CORRECTION  
10-BIT RESOLUTION  
TFT-LCD REFERENCE DRIVERS  
REFERENCE VOLTAGE GENERATORS  
INDUSTRIAL PROCESS CONTROL  
D
D
D
D
D
D
D
D
D
DOUBLE-BUFFERED DAC REGISTERS  
INTEGRATED REFERENCE BUFFERS  
RAIL-TO-RAIL OUTPUT  
D
DESCRIPTION  
LOW SUPPLY CURRENT: 900µA/ch  
SUPPLY VOLTAGE: 7V to 18V  
DIGITAL SUPPLY: 2.3V to 5.5V  
The BUF12800 is a programmable voltage reference  
generator designed for dynamic gamma correction in  
TFT-LCD panels. It provides 12 programmable outputs,  
each with 10-bit resolution.  
INDUSTRY-STANDARD TWO-WIRE INTERFACE  
− High-Speed Mode: 3.4MHz  
TI’s new, small geometry, state-of-the-art, analog CMOS  
process allows the use of one digital-to-analog converter  
(DAC) per channel while still maintaining a very small chip  
size. This topology has the advantage of significantly  
increased programming speed over existing program-  
mable buffers.  
D
D
HIGH ESD RATING:  
− 4kV HBM, 1kV CDM, 200V MM  
DEMO BOARD AND SOFTWARE AVAILABLE  
V
V
REFH  
3
SD  
S
4
1, 2  
Programming of each output occurs through an industry-  
standard, two-wire serial interface. Unlike existing  
programmable buffers, the BUF12800 offers a high-  
speed, two-wire interface mode that allows clock speeds  
up to 3.4MHz. The BUF12800 features a double-buffered  
DAC register structure that significantly simplifies imple-  
mentation of dynamic gamma control. This further reduces  
programming time, especially when many channels have  
to be updated simultaneously.  
BUF12800  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
Out A  
Out B  
Out C  
Out D  
Out E  
Out F  
Out G  
Out H  
Out I  
Reference pins set the high and low voltages of the output  
range. They are internally buffered, which simplifies  
design. They may be connected to external resistors to  
divide the output range for finer resolution of outputs.  
The BUF12800 is available in a TSSOP-24 PowerPAD  
package. It is specified from −40°C to +85°C.  
BUF12800 RELATED PRODUCTS  
Out J  
Out K  
Out L  
FEATURES  
PRODUCT  
11-ChannelGamma Correction Buffer, Int V  
BUF11702  
BUF07703  
BUF06703  
BUF05703  
BUFxx704  
BUF20800  
COM  
COM  
6-Channel Gamma Correction Buffer, Int V  
6-Channel Gamma Correction Buffer  
4-Channel Gamma Correction Buffer, Int V  
High-Supply Voltage Gamma Buffers  
COM  
6
5
SDA  
SCL  
Control IF  
8
20-Channel Programmable Buffer, 10-Bit, V  
COM  
7
10  
REFL  
9
11, 12  
LD  
A0  
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.  
ꢀꢁ ꢂ ꢃꢄ ꢅ ꢆꢇ ꢂꢈ ꢃ ꢉꢆꢉ ꢊꢋ ꢌꢍ ꢎ ꢏꢐ ꢑꢊꢍꢋ ꢊꢒ ꢓꢔ ꢎ ꢎ ꢕꢋꢑ ꢐꢒ ꢍꢌ ꢖꢔꢗ ꢘꢊꢓ ꢐꢑꢊ ꢍꢋ ꢙꢐ ꢑꢕꢚ ꢀꢎ ꢍꢙꢔ ꢓꢑꢒ  
ꢓ ꢍꢋ ꢌꢍꢎ ꢏ ꢑꢍ ꢒ ꢖꢕ ꢓ ꢊ ꢌꢊ ꢓ ꢐ ꢑꢊ ꢍꢋꢒ ꢖ ꢕꢎ ꢑꢛꢕ ꢑꢕ ꢎ ꢏꢒ ꢍꢌ ꢆꢕꢜ ꢐꢒ ꢇꢋꢒ ꢑꢎ ꢔꢏ ꢕꢋꢑ ꢒ ꢒꢑ ꢐꢋꢙ ꢐꢎ ꢙ ꢝ ꢐꢎ ꢎ ꢐ ꢋꢑꢞꢚ  
ꢀꢎ ꢍ ꢙꢔꢓ ꢑ ꢊꢍ ꢋ ꢖꢎ ꢍ ꢓ ꢕ ꢒ ꢒ ꢊꢋ ꢟ ꢙꢍ ꢕ ꢒ ꢋꢍꢑ ꢋꢕ ꢓꢕ ꢒꢒ ꢐꢎ ꢊꢘ ꢞ ꢊꢋꢓ ꢘꢔꢙ ꢕ ꢑꢕ ꢒꢑꢊ ꢋꢟ ꢍꢌ ꢐꢘ ꢘ ꢖꢐ ꢎ ꢐꢏ ꢕꢑꢕ ꢎ ꢒꢚ  
Copyright 2004−2007, Texas Instruments Incorporated  
www.ti.com  
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