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QT102 View Datasheet(PDF) - Quantum Research Group

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QT102 Datasheet PDF : 18 Pages
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3.6 Examples of Typical Applications
Figure 3.14 Application 1
Active low, driving PNP transistor, auto off time 500s x 24 (3.33 hours)
+3V
100nF
SENSE
ELECTRODE
RS
10k
Rm
1M
(x24)
CS
22nF
5
VDD
3 SNSK
OUT 1
4 SNS
Rt 47k
TIME 6
DTA143
2.2k
VSS
2
Ct 10nF
Load
Auto off time obtained from 3V chart in Figure 3.13
Setting the delay multiplier to x24 will decrease the key sensitivity, so it may be necessary to increase the value of Cs.
Figure 3.15 Application 2
Active high, driving high impedance, auto off time 135s x 1 (2.25 minutes)
SENSE
ELECTRODE
Rs
10k
+5V
100nF
CS
6.8nF
5
VDD
3 SNSK
OUT 1
4 SNS
Rt 10k
TIME 6
Rop 2.2k
Rm
Ct 47nF
VSS
2
Auto off time obtained from 5V chart in Figure 3.12.
lQ
12
QT102_2R3.04_0807
 

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