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參數資料
| 型號： | UCB1200 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Advanced modem/audio analog front-end |
| 中文描述： | 先進的調制解調器/音頻模擬前端 |
| 文件頁數： | 14/54頁 |
| 文件大?。?/td> | 1052K |
| 代理商： | UCB1200 |
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1998 Jul 22
14
Philips Semiconductors
Product specification
Advanced modem/audio analog front-end
UCB1200
PRESSURE MEASUREMENT
The pressure used to press the touch screen can be determined. In fact the contact resistance between the X and Y plate
is measured, which is a good indication of the size of the pressed spot and the applied pressure. A soft stylus, e.g. a
finger, leads to a rather large contact area between the two plates when a large pressure is applied. A hard stylus, e.g.
a pen, leads to less variation in measured contact resistance since the contact area is rather small.
One plate is biased at one or both terminals during this pressure measurement, whereas the other plate is grounded,
again on one or both terminals. The current flowing through the touch screen is a direct indication for the resistance
between both plates. A compensation for the series resistance, formed by the touch screen plates itself will improve the
accuracy of this measurement.
Fig.9 Touch screen setup for pressure measurement.
Vtscbias
tspx
tsmx
tspy
tsmy
ipressure
相關PDF資料 |
PDF描述 |
|---|---|
| UCB1200BE | Advanced modem/audio analog front-end |
| UCB1300 | Advanced modem/audio analog front-end |
| UCB1300BE | Advanced modem/audio analog front-end |
| UCB1400BE | Audio codec with touch screen controller and power management monitor |
| UCB1400 | Audio codec with touch screen controller and power management monitor |
相關代理商/技術參數 |
參數描述 |
|---|---|
| UCB1200B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:UCB1200B |
| UCB1200BE | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Advanced modem/audio analog front-end |
| UCB1300 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Advanced modem/audio analog front-end |
| UCB1300BE | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Advanced modem/audio analog front-end |
| UCB1400 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Audio codec with touch screen controller and power management monitor |
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