參數(shù)資料
型號： AK4650
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類： Codec
英文描述： 16Bit ツヒ CODEC with MIC/HP/SPK-AMP & TSC
中文描述： 16位ツヒ編解碼器麥克風(fēng)/惠普/胰腎聯(lián)合移植腺苷
文件頁數(shù)： 47/86頁
文件大?。?/td> 824K
代理商： AK4650
[AK4650]
MS0502-E-01
2007/04
- 47 -
■
Pen Pressure Measurement
The touch screen pen pressure can be derived from the measurement of the contact resistance between two plates. The
contact resistance depends on the size of the depressed area and the pressure. The area of the spot is proportional to the
contact resistance. This resistance (R
touch
) can be calculated using two different methods.
Total resistance of the X-plate sheet (R
xplate
) is known
The resistance, R
touch
, is calculated from the results of three conversions, X-position, Z
1
-Position, and Z
2
-Position, using
the following formula:
X
position
×
R
touch
= R
xplate
×
4096
Z
2
Z
1
(
– 1
)
1)
The resistances of both the X-plate and Y-plate (R
xplate
, R
yplate
) are known
The resistance, R
touch
, is calculated from the results of three conversions, X-position, Y-Position, and Z
1
-Position, using
the following formula:
X
position
×
Z
1
(
R
touch
= R
xplate
×
4096
4096
– 1
)
– R
yplate
×
Y
position
4096
(
1–
)
ON
YN
VREF+
VREF-
ADC
AIN+
AIN-
XP
YP
XN
ON
a) Z
1
-Position Measurement
Differential Mode
touch
ON
YN
VREF+
VREF-
ADC
AIN+
AIN-
XP
YP
XN
ON
b) Z
2
-Position Measurement
Differential Mode
touch
AK4650
AK4650
Figure 35. Pen Pressure Measurement
相關(guān)PDF資料
PDF描述
AK4650VG 16Bit ツヒ CODEC with MIC/HP/SPK-AMP & TSC
AK4651 16Bit ツヒ CODEC with MIC/HP/SPK-AMP
AK4651VG 16Bit ツヒ CODEC with MIC/HP/SPK-AMP
AK4665A 20-Bit Stereo CODEC with MIC/HP-AMP
AK4665AEN 20-Bit Stereo CODEC with MIC/HP-AMP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK4650VG 制造商:AKM 制造商全稱:AKM 功能描述:16Bit ツヒ CODEC with MIC/HP/SPK-AMP & TSC
AK4651 制造商:AKM 制造商全稱:AKM 功能描述:16Bit ツヒ CODEC with MIC/HP/SPK-AMP
AK4651VG 制造商:AKM 制造商全稱:AKM 功能描述:16Bit ツヒ CODEC with MIC/HP/SPK-AMP
AK4664VQ 功能描述:IC CODEC STEREO 20BIT LQFP 制造商:akm semiconductor inc. 系列:* 零件狀態(tài):上次購買時(shí)間 標(biāo)準(zhǔn)包裝:1,000
AK4665A 制造商:AKM 制造商全稱:AKM 功能描述:20-Bit Stereo CODEC with MIC/HP-AMP
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報(bào)價(jià)

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*