E3A Atmel, E3A Datasheet - Page 10

• Manufacturer Part Number: E3A
• Description: BOARD EVALUATION FOR QT300
• Manufacturer: Atmel
• Series: Quantum, QTouch™r

Specifications of E3A

• Sensor Type: Touch, Capacitive
• Sensing Range: 1 Button/Key
• Interface: SPI Serial
• Voltage - Supply: 2 V ~ 5.5 V
• Embedded: No
• Utilized Ic / Part: QT300
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sensitivity: -
• Other names: 427-1069

LQ
500
400
300
200
100
0
Figure 7-4 Typical resolution vs Cx & Cs;
0
Cs
9nF
19nF
43nF
74nF
124nF
200nF
11
Vdd = 3.0 Volts
-1.00%
-2.00%
-3.00%
-4.00%
-5.00%
5.00%
4.00%
3.00%
2.00%
1.00%
0.00%
6000
5000
4000
3000
2000
1000
Cx Load
Figure 7-6 Typical Signal Deviation vs. Temperature
-10 -5
0
21
-10
Vdd = 5.0 Volts, Cx = 10pF, Cs = 5~200nF PPS Film
Vdd = 5.0 Volts, Cx = 10pF, PPS film capacitors
Figure 7-7 Typical Signal Vs. Cs & Temp
0
0
34
5
10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85
10
20
48
Temperature, °C
30
Temperature, C
10
40
150
125
100
75
50
25
0
50
Figure 7-5 Typical resolution vs Cx & Cs;
0
200nF PPS
100nF PPS
4.7nF PPS
60
70
Cs
43nF
74nF
124nF
200nF
11
Vdd = 3.0 Volts
80
Cx Load
21
QT300 R1.01 21/09/03
34
48