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參數(shù)資料
| 型號(hào)： | LM8342SDX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 消費(fèi)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)： | 13/16頁 |
| 文件大小： | 951K |
| 代理商： | LM8342SDX |
Application Section
(Continued)
TABLE 3. P-bit Truth Table
Operation
Read
Read
P-bit
1
0
Description
Programming Ready
Programming Busy
(don’t turn off the device)
Register Write
EEPROM Write
Write
Write
1
0
The LM8342 can be used in I
2
C compatible systems with
clock speeds of up to 400 kbps (Fast mode). For low speed
applications, an initial resistor value for the pull-up resistors
is 15 k
is suitable. When increasing the speed of the
interface bus, the user should decrease the value of the
pull-up resistors.
Typical Application
The following section discusses two typical applications for
the LM8342. In the first application the LM8342 is used as a
programmable current sink, for example to drive a program-
mable bias generator. In the second application the LM8342
is used to adjust the voltage level of a V
COM
driver.
PROGRAMMABLE CURRENT SINK
As described in the “Principle of Operation of the LM8342”
section the LM8342 basically operates as a programmable
current sink.
Figure 7
shows a general current sink
application.
The output current of the LM8342 can be calculated using
Equation (3)
.
(3)
DRIVING A V
COM
LEVEL
Another typical application, given in
Figure 8
, is using the
LM8342 to adjust the “voltage tap” of a resistive voltage
divider. The V
COM
driver buffers the “voltage tap” in this
application.
20139233
FIGURE 7. Programmable Current Sink
L
www.national.com
13
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| LM8362 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:LM8362 |
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