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QST108 데이터시트(PDF) 30 Page - STMicroelectronics

부품명 QST108
상세설명  Capacitive touch sensor device 8 keys with individual key state outputs or I2C interface
PDF  38 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

QST108 데이터시트(HTML) 30 Page - STMicroelectronics

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Electrical characteristics
QST108
30/38
6.5
Capacitive sensing characteristics
Table 24.
External sensing components
Symbol
Parameter
Min.
Typ.
Max.
Unit
CS
Sense capacitor
100
nF
CX
Equivalent electrode capacitor
100
pF
CT
Equivalent touch capacitor
5
pF
RS
Serial resistance
10
22
kOhm
Table 25.
Capacitive sensing parameters
Symbol
Parameter
Min.
Typ.
Max.
Unit
tCAL
Calibration duration
TBD
ms
tSetup
Setup duration
TBD
ms
DI
Default detection integrator
2
Counts
DeTh
Default detection threshold
– 10
Counts
EDI
Default end of detection integrator
2
Counts
EofDeTh
Default end of detection threshold
– 8
Counts
PosRecal
Default positive recalibration integrator
2
Counts
PosRecalTh
Default positive recalibration threshold
6
Counts
tPosRecal
Positive recalibration delay
TBD
s
MaxOnDuration Default max on-duration delay
Infinite
s
PosDiffDrift
Positive differential drift compensation rate
TBD
ms/level
NegDiffDrift
Negative differential drift compensation rate
TBD
ms/level
PosComDrift
Positive common drift compensation rate
TBD
ms/level
NegComDrift
Negative common drift compensation rate
TBD
ms/level
BurstCount
Burst length
20
2000
Counts



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