AT42QT1012_10 ATMEL [ATMEL Corporation], AT42QT1012_10 Datasheet - Page 19
AT42QT1012_10
Manufacturer Part Number
AT42QT1012_10
Description
One-channel Toggle-mode Touch Sensor IC with Power Management Functions
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT42QT1012_10.pdf
(28 pages)
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3.12
9543D–AT42–08/10
Examples of Typical Applications
Figure 3-14. Application 1
Figure 3-15. Application 2
ELECTRODE
ELECTRODE
SENSE
SENSE
Active low, driving PNP transistor, auto off time 375s x 24 = 9000s = 2.5 hours
Active high, driving high impedance, auto off time 315s x 1 = 5.25 minutes
RS
Auto off time obtained from 3V chart in
Rs
Auto off time obtained from 5V chart in
CS
CS
Rm
1M
1M
Rm
100nF
3
4
100nF
3
4
SNS
SNSK
SNS
SNSK
VDD
+3V
VSS
VDD
+5V
VSS
5
2
5
2
TIME
OUT
TIME
OUT
6
1
6
1
Ct
Rt
Rt
Ct
Figure 3-10 on page 16
Figure 3-9 on page 15
47nF
10k
10k
47nF
Rop
100k
AT42QT1012
DTA143
2.2k
Load
19
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