參數(shù)資料
型號: DEMOMPR031
廠商: Freescale Semiconductor
文件頁數(shù): 10/33頁
文件大?。?/td> 0K
描述: BOARD DEMO FOR MPR031 CTLR
產(chǎn)品培訓模塊: MPR03x - Low-Power Proximity Sensors
視頻文件: DEMOPR031 Touch Sensor
標準包裝: 1
傳感器類型: 觸摸,電容式
接口: I²C
電源電壓: 1.71 V ~ 2.75 V
嵌入式:
已供物品:
已用 IC / 零件: MPR031
產(chǎn)品目錄頁面: 2808 (CN2011-ZH PDF)
相關產(chǎn)品: MPR031EPR2DKR-ND - IC CTLR TOUCH SENSOR 8-DFN
MPR031EPR2CT-ND - IC CTLR TOUCH SENSOR 8-DFN
MPR031EPR2TR-ND - IC CTLR TOUCH SENSOR 8-DFN
MPR03X
Sensors
18
Freescale Semiconductor
Figure 23.
Smaller amounts of change indicate increased sensitivity for the capacitance sensor. Some sample values are shown in Table 11.
In the above cases, the capacitance is assumed to be in the middle of the range for specific settings. Within the capacitance
range the equation is nonlinear, thus the sensitivity is best with the lowest capacitance. This graph shows the sensitivity derivative
reading across the valid range of capacitances for a set I, T, and VDD. For simple small electrodes (that are approximately
21 pF) and a nominal 1.8V supply the following graph is representative of this effect.
Figure 24.
Table 11.
pF
Sensitivity (pF/ADC count)
10
-0.01953
100
-0.19531
Sensitivity vs. Midpoint Capacitance for VDD =1.8V
-5
-4.5
-4
-3.5
-3
-2.5
-2
-1.5
-1
-0.5
0
500
1000
1500
2000
2500
Midpoint Capacitance (pF)
S
ens
iti
vi
ty
(pF/
A
D
C
Count
)
dC/dADC @cmid (pF/1 ADC Count)
0
Sensitivity vs. Capacitance for VDD =1.8Vand I=36 μA and T=.5 μS
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
10
12
14
16
18
20
22
24
26
28
30
Se
ns
itiv
ity
(pF/A
D
C
ount
)
Maximum
Minimum
C/ADC
Capacitance
相關PDF資料
PDF描述
EBM28DRSH CONN EDGECARD 56POS DIP .156 SLD
L04022R7AHN INDUCTOR THIN FILM 2.7NH 0402
0210490810 CABLE JUMPER 1.25MM .030M 13POS
VE-JTT-EZ CONVERTER MOD DC/DC 6.5V 25W
VI-J7T-EZ CONVERTER MOD DC/DC 6.5V 25W
相關代理商/技術參數(shù)
參數(shù)描述
DEMOMPR083 功能描述:觸摸傳感器開發(fā)工具 TOUCH SENSOR CNTRLR RoHS:否 制造商:Cypress Semiconductor 工具用于評估: 接口類型: 工作電壓: 最大工作溫度:
DEMO-MSA 制造商:Avago Technologies 功能描述:DEMOBOARD MSA-XX05,10,11,36,70,86 - Bulk
DEMONB5CP1V1 制造商:OMRON AUTOMATION AND SAFETY 功能描述:NB5 CP1 PLC SALES DEMO
DEMO-NB5CP1V1 制造商:OMRON AUTOMATION AND SAFETY 功能描述:NB5 CP1 PLC SALES DEMO 制造商:OMRON INDUSTRIAL AUTOMATION 功能描述:NB5 CP1 PLC Sales Demo
DEMO-NB7CP1V1 制造商:OMRON INDUSTRIAL AUTOMATION 功能描述:NB7 CP1 PLC Sales Demo