qt1103 Quantum Research Group, qt1103 Datasheet - Page 15

• Manufacturer Part Number: qt1103
• Description: Qtouch? 10-key Sensor Ic
• Manufacturer: Quantum Research Group

4.6 Idd Curves
All Idd curves are average values, under the following conditions: Cx = 5pF, Cs = 4.7nF, Ta = 20
circuit. Refer to page 9 for more information about optimization of LP modes.
Full speed operation
lQ
Low Power operation (optimized - only burst B in use)
500.0
400.0
300.0
200.0
100.0
1500.0
1250.0
1000.0
5.0
4.0
3.0
2.0
1.0
0.0
750.0
500.0
250.0
0.0
QT1103, average Idd (70ms optimized LP operation)
0.0
0
0
0
QT1103, average Idd (full speed operation)
QT1103, average Idd (190ms optimized LP
1
1
1
burst length (ms)
burst length (ms)
burst length (ms)
2
2
2
3
3
operation)
3
4
4
4
5
5
5
6
6
6
Vdd=5V
Vdd=4V
Vdd=3.3V
Vdd=2.8V
Vdd=5V
Vdd=4V
Vdd=3.3V
Vdd=2.8V
Vdd=5V
Vdd=4V
Vdd=3.3V
Vdd=2.8V
15
1000.0
800.0
600.0
400.0
200.0
0.0
0
QT1103, average Idd (110ms optimized LP
1
burst length (ms)
2
operation)
3
4
o
C; no spread-spectrum
QT1103_3R0.03_0607
5
6
Vdd=5V
Vdd=4V
Vdd=3.3V
Vdd=2.8V