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參數(shù)資料
| 型號： | LM8342SDX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 消費家電 |
| 英文描述： | Programmable TFT VCOM Calibrator with Non-Volatile |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, DSO10 |
| 封裝： | LLP-10 |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 951K |
| 代理商： | LM8342SDX |
Application Section
(Continued)
Figure 3
shows a block diagram of a TFT panel. The V
buffer supplies a common voltage (V
) to all the pixels in
a TFT panel. In general, V
is a DC voltage that is in the
middle of the gamma voltage range. Screen performance
can be optimized by tuning the V
voltage in the calibra-
tion procedure. Using the LM8342, the V
COM
calibration
procedure is simplified by elimination of the potentiometer
adjustment task. This task is currently performed at the
factory using a trimmer adjustment tool and visual inspec-
tion, when using a stable reference voltage and a
potentiometer as a voltage divider to generate the V
COM
voltage.
PRINCIPLE OF OPERATION OF THE LM8342
The LM8342 is an integrated combination of a digitally con-
trolled current sink and a non-volatile register (7 bits EE-
PROM). Writing data can be done using the I
2
C compatible
interface. Data can be written to a volatile register and can
also be stored in the non-volatile EEPROM. A simplified
block diagram of the LM8342 is given in
Figure 4
.
20139218
FIGURE 3. TFT Panel Block Diagram
20139229
FIGURE 4. Block Diagram of the LM8342
L
www.national.com
10
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| LM8342SDX/NOPB | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| LM8360 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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| LM8361_SERIES | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述: |
| LM8362 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:LM8362 |
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