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參數(shù)資料
| 型號： | LH1687 |
| 廠商： | Sharp Corporation |
| 英文描述： | 240-output TFT-LCD Source Driver IC |
| 中文描述： | 240輸出的TFT - LCD驅(qū)動器IC |
| 文件頁數(shù)： | 10/21頁 |
| 文件大小： | 93K |
| 代理商： | LH1687 |
LH1687
10
(3) Output Circuit Type
The LH1687 samples video signals by the sample
and hold circuits of 2 systems and outputs the
voltage corresponding to the sampled data by the
input switching operational amplifiers with push-pull
output buffer.
Sample and hold circuits and output circuits are as
shown in the diagram below.
When CTR = "H", the LH1687 samples the data to
system A of the sample and hold circuits and
outputs the voltage corresponding to the voltage
sampled by capacitor B of system B.
When CTR = "L", the LH1687 samples the data to
system B of the sample and hold circuits and
outputs the voltage corresponding to the voltage
sampled by capacitor A of system A.
Therefore, it is usually necessary to repeat the
sampling operation and output operation by
exchanging CTR signal ("H" to "L" or "L" to "H") for
every start signal.
While CTR signal is set to "H" or "L" several times
for start signal, the same voltage is output
continuously.
The output voltage corresponds to the data
sampled by the previous sampling operation.
Timing of operation is as follows.
Also, there is a power save function which makes
high-impedance of the output pin and a reduction in
the current of operational amplifiers possible when
set to PS = "L", but careful attention must be paid
to the displaying quality etc. when using it.
+1
+2
–
Capacitor B
GNDA
GNDA
Sampling
Signal A
Operational Amplifier
+ Output Buffer
Sampling
Signal B
Capacitor A
System B of Sample and Hold Circuits
System A of Sample and Hold Circuits
Output Pin
Video
Signal
Sampling 1
Output 0
Output 1
Sampling 2
Sampling 3
Output 2
Sampling 3'
Output 2
Output 3'
Sampling 4
System A
System B
Start signal
CTR
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LH168A | 384-output TFT-LCD Source Driver IC |
| LH168B | 324 Outputs 64 Gradations TFT-LCD Source Driver |
| LH168D | 384 Outputs 64 Gradations TFT-LCD Source Driver |
| LH168K | 324-output TFT-LCD Source Driver IC |
| LH168M | 384-output TFT-LCD Source Driver IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LH168A | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:384-output TFT-LCD Source Driver IC |
| LH168B | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:324 Outputs 64 Gradations TFT-LCD Source Driver |
| LH168D | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:384 Outputs 64 Gradations TFT-LCD Source Driver |
| LH168G | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:324 Outputs 64 Gradations TFT-LCD Source Driver |
| LH168J | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:384 Outputs 64 Gradations TFT-LCD Source Driver |
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