at42qt1011 ATMEL Corporation, at42qt1011 Datasheet - Page 12

• Manufacturer Part Number: at42qt1011
• Description: One-channel Touch Sensor Ic
• Manufacturer: ATMEL Corporation

5. Specifications
5.1
5.2
5.3
Vdd = 3.0V, Cs = 4.7 nF, Cx = 5 pF, Ta = recommended range, unless otherwise noted
12
Operating temperature
Storage temperature
V
Max continuous pin current, any control or drive pin
Short circuit duration to Vss, any pin
Short circuit duration to Vdd, any pin
Voltage forced onto any pin
V
Short-term supply ripple + noise
Long-term supply stability
Cs value
Cx value
Parameter
DD
DD
T
T
T
T
T
T
T
T
RC
PC
PT
G
G
HB
BL
R
Absolute Maximum Specifications
Recommended Operating Conditions
AC Specifications
1
2
AT42QT1011
CAUTION: Stresses beyond those listed under Absolute Maximum Specifications may cause permanent damage to the
device. This is a stress rating only and functional operation of the device at these or other conditions beyond those
indicated in the operational sections of this specification is not implied. Exposure to absolute maximum specification
conditions for extended periods may affect device reliability
Recalibration time
Charge duration
Transfer duration
Time between end of burst and
start of the next (Fast mode)
Time between end of burst and
start of the next (LP mode)
Burst length
Response time
HeartBeat pulse width
Description
Min
3.05
2.45
Typ
200
9.0
1.2
80
15
-40°C to +85°C
-55°C to +125°C
0 to +6.5V
±20 mA
Infinite
Infinite
-0.6V to (V
+1.8 to 5.5V
±20 mV
±100 mV
2 to 50 nF
5 to 50 pF
Max
100
DD
Units
ms
ms
ms
ms
ms
+ 0.6) Volts
µs
µs
µs
Notes
Cs, Cx dependent
±7.5% spread spectrum variation
±7.5% spread spectrum variation
Increases with decreasing V
See
V
Section 4.2
DD
, Cs and Cx dependent. See
Figure 5-1 on page 13
for capacitor selection.
9542G–AT42–03/10
DD