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BUF22821AIDCPR PDF预览

BUF22821AIDCPR

更新时间： 2024-11-13 03:23:11
品牌 Logo 应用领域
德州仪器 - TI 模拟IC信号电路光电二极管
页数 文件大小 规格书
25页 752K
描述
Programmable Gamma-Voltage Generator and VCOM Calibrator with Integrated Two-Bank Memory

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BUF22821AIDCPR 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：TSSOP
包装说明：HTSSOP-38针数：38
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：1.53Is Samacsys：N
其他特性：ALSO REQUIRES A 9V TO 20V SUPPLY模拟集成电路 - 其他类型：ANALOG CIRCUIT
JESD-30 代码：R-PDSO-G38JESD-609代码：e4
长度：9.7 mm湿度敏感等级：3
信道数量：24功能数量：1
端子数量：38最高工作温度：95 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：HTSSOP封装等效代码：TSSOP38,.25,20
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：260电源：2,18 V
认证状态：Not Qualified座面最大高度：1.15 mm
子类别：Other Analog ICs最大供电电压 (Vsup)：20 V
最小供电电压 (Vsup)：9 V标称供电电压 (Vsup)：18 V
表面贴装：YES技术：CMOS
温度等级：INDUSTRIAL端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：GULL WING端子节距：0.5 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：4.4 mmBase Number Matches：1

BUF22821AIDCPR 数据手册

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BUF22821  
SBOS399–JUNE 2007  
Programmable Gamma-Voltage Generator and  
VCOM Calibrator with Integrated Two-Bank Memory  
FEATURES  
DESCRIPTION  
•
24-CHANNEL GAMMA  
The BUF22821 offers 22 programmable gamma  
channels, two programmable VCOM channels, and  
two static gamma channels. It is ideal for the new  
10-bit source drivers that require 22 gamma  
channels.  
–
–
22-CHANNEL PROGRAMMABLE  
2-CHANNEL STATIC GAMMA  
•
•
•
•
•
•
•
•
•
2-CHANNEL PROGRAMMABLE VCOM  
10-BIT RESOLUTION  
The final gamma and VCOM values can be stored in  
the on-chip, nonvolatile memory. To allow for  
programming errors or liquid crystal display (LCD)  
panel rework, the BUF22821 supports up to 16 write  
operations to the on-chip memory. The BUF22821  
has two separate banks of memory, allowing  
simultaneous storage of two different gamma curves  
to facilitate switching between gamma curves.  
16x REWRITABLE NONVOLATILE MEMORY  
TWO INDEPENDENT MEMORY BANKS  
RAIL-TO-RAIL OUTPUT  
LOW SUPPLY CURRENT: 0.5mA/channel  
SUPPLY VOLTAGE: 9V to 20V  
DIGITAL SUPPLY: 2V to 5.5V  
I2C™ INTERFACE  
All gamma and VCOM channels offer a rail-to-rail  
output that typically swings to within 100mV of either  
supply rail with a 10mA load. All channels are  
programmed using an I2C interface that supports  
standard operations up to 400kHz and high-speed  
data transfers up to 3.4MHz.  
APPLICATIONS  
•
TFT-LCD REFERENCE DRIVERS  
Analog  
Digital  
BKSEL  
(9V to 20V)  
(2.0V to 5.5V)  
The BUF22821 is manufactured using Texas  
Instruments’ proprietary, state-of-the-art, high-voltage  
CMOS process. This process offers very dense logic  
and high supply voltage operation of up to 20V. The  
BUF22821 is offered in a HTSSOP-38 PowerPAD™  
package. It is specified from –40°C to +85°C.  
1
STATOUTH  
STATINH  
AVDD  
OUT1  
OUT2  
RELATED PRODUCTS  
FEATURES  
PRODUCT  
BUF12800  
BUF20800  
BUF20820  
BUF01900  
BUF11704  
BUF11705  
OUT21  
OUT22  
12-Channel Gamma Correction Buffer  
20-Channel Programmable Buffer, 10-Bit, VCOM  
16-/20-Channel Programmable Buffer with Memory  
Programmable VCOM Driver  
STATINL  
AVDD  
18V Supply, Traditional Gamma Buffers  
22V Supply, Traditional Gamma Buffers  
STATOUTL  
VCOM1  
VCOM2  
SDA  
SCL  
Control IF  
BUF22821  
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 trademark of Texas Instruments.  
I2C is a trademark of NXP Semiconductors.  
All other trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2007, Texas Instruments Incorporated  
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