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LM8342SD/NOPB PDF预览

LM8342SD/NOPB

更新时间： 2024-11-03 11:10:39
品牌 Logo 应用领域
德州仪器 - TI 光电二极管商用集成电路存储
页数 文件大小 规格书
24页 548K
描述
具有非易失性存储器的可编程 TFT Vcom 校准器 | DSC | 10 | -40 to 85

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LM8342SD/NOPB 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：HVSON,
Reach Compliance Code：compliantECCN代码：EAR99
Factory Lead Time：1 week风险等级：0.55
商用集成电路类型：CONSUMER CIRCUITJESD-30 代码：S-PDSO-N10
JESD-609代码：e3长度：3 mm
湿度敏感等级：1功能数量：1
端子数量：10最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：HVSON封装形状：SQUARE
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：260
座面最大高度：0.8 mm最大供电电压 (Vsup)：3.6 V
最小供电电压 (Vsup)：2.25 V表面贴装：YES
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
端子形式：NO LEAD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：3 mmBase Number Matches：1

LM8342SD/NOPB 数据手册

 浏览型号LM8342SD/NOPB的Datasheet PDF文件第2页浏览型号LM8342SD/NOPB的Datasheet PDF文件第3页浏览型号LM8342SD/NOPB的Datasheet PDF文件第4页浏览型号LM8342SD/NOPB的Datasheet PDF文件第5页浏览型号LM8342SD/NOPB的Datasheet PDF文件第6页浏览型号LM8342SD/NOPB的Datasheet PDF文件第7页 
LM8342  
www.ti.com  
SNOSAM0B –NOVEMBER 2005–REVISED MARCH 2013  
LM8342 Programmable TFT V Calibrator with Non-Volatile Memory  
COM  
Check for Samples: LM8342  
1
FEATURES  
DESCRIPTION  
The LM8342 is an integrated combination of a non-  
volatile register (7 bits EEPROM) and a DAC  
controlled current source. Using the LM8342, the  
VCOM calibration procedure is simplified by elimination  
of the potentiometer adjustment task. This adjustment  
task is currently performed at the factory using a  
trimmer adjustment tool and visual inspection.  
2
•
I2C Compatible Programmable DAC to Set the  
Output Current  
•
•
•
•
•
•
Ensured Monotonic DAC  
Non-Volatile Memory to Hold the Setting  
EEPROM in System Programmable  
No External Programming Voltage Required  
Maximum Interface Bus Speed is 400 kHz  
SON-10 Package  
The VCOM adjustment can be done electronically in  
production, using the I2C compatible interface. The  
factory operator can physically view the screen head-  
on (frontal viewing) when performing this step, easing  
manufacturing especially for large TFT panels.  
APPLICATIONS  
•
•
•
TFT Panel Factory Calibration  
Digital Potentiometer  
The VCOM level is typically at half AVDD (determined  
by R1 and R2) and is buffered by the actual VCOM  
driver. By controlling the level of IOUT, the VCOM level  
can be tuned. The current level at the output of the  
LM8342 is a fraction (1/128 to 128/128) of a  
maximum current which is set by RSET and an analog  
reference (AVDD). The actual fraction is determined  
by the 7-bit DAC. As a result, the output current of  
the LM8342 has a good temperature stability yielding  
a very stable VCOM adjustment. Controlling the DAC  
setting of the LM8342 is done via its I2C compatible  
interface. The actual DAC setting is stored in a  
volatile register. Using a “Write to EE” command the  
data can be stored permanently in the embedded  
EEPROM. At power on of the device, the EEPROM  
data is copied to the volatile register, setting the DAC.  
At any time, the data in the EEPROM can be  
changed again via the I2C compatible interface.  
Programmable Current Sink  
Typical Application  
V
DD  
AV  
DD  
6
2
AV  
DD  
V
DD  
15 kW  
15 kW  
15 kW  
R1  
V
COM  
OUT  
SDA  
+
7
1
-
I
OUT  
SCL  
R2  
8
LM8342  
SCL-S  
9
3
SET  
CONTROLLER  
WP  
N
10  
R
SET  
WP  
P
GND  
4
5
1
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.  
All trademarks are the property of their respective owners.  
2
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 © 2005–2013, Texas Instruments Incorporated  
1234567...24

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