AT42QT1012-MAH Atmel, AT42QT1012-MAH Datasheet - Page 19

• Manufacturer Part Number: AT42QT1012-MAH
• Description: IC SENSR TOUCH/PROX 1CH SOT23-8
• Manufacturer: Atmel
• Series: QTouch™r
• Type: Capacitiver

Specifications of AT42QT1012-MAH

• Touch Panel Interface: 1, 2-Wire
• Number Of Inputs/keys: 1 Key
• Resolution (bits): 9, 14 b
• Data Interface: Serial
• Voltage Reference: Internal
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-UFDFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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