QT1081 Datasheet, PDF (14/20 Pages) Quantum Research Group – 8-KEY QTOUCH SENSOR IC

4.6 Average Idd Curves
All Idd curves are average values, under the following conditions: Cx = 5pF, Ta = 20^oC, Rosc = 18KΩ; no spread-spectrum
circuit. Refer to page 9 for more information about optimization of LP modes.
Full speed operation
6.0
5.0
4.0
3.0
2.0
1.0
0.0
0
QT1081, average Idd (full speed operation)
Vdd=5V
Vdd=4V
Vdd=3.3V
Vdd=2.8V
1
2
3
4
5
6
burst length (ms)
Low Power operation (optimized - only burst B in use)
QT1081, average Idd (100ms optimized LP operation)
800.0
600.0
400.0
200.0
Vdd=5V
Vdd=4V
Vdd=3.3V
Vdd=2.8V
0.0
0123456
burst length (ms)
QT1081, average Idd (340ms optimized LP operation)
200.0
150.0
100.0
50.0
Vdd=5V
Vdd=4V
Vdd=3.3V
Vdd=2.8V
0.0
0123456
burst length (ms)
QT1081, average Idd (180ms optimized LP operation)
400.0
300.0
200.0
100.0
Vdd=5V
Vdd=4V
Vdd=3.3V
Vdd=2.8V
0.0
0123456
burst length (ms)
lQ
14
QT1081_1R0.04_0307