QT320-IS Atmel, QT320-IS Datasheet - Page 15

• Manufacturer Part Number: QT320-IS
• Description: SENSOR IC TOUCH PROG 2CH 8-SOIC
• Manufacturer: Atmel
• Series: QProx™r
• Type: Capacitiver

Specifications of QT320-IS

• Rohs Status: RoHS non-compliant
• Touch Panel Interface: 2, 2-Wire
• Number Of Inputs/keys: 2 Key
• Resolution (bits): 16 b
• Data Interface: Serial
• Voltage Reference: Internal
• Voltage - Supply: 1.8 V ~ 5.25 V
• Current - Supply: 600µA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SMD (300 mil)
• Output Type: *
• Interface: *
• Input Type: *
• Other names: 427-1031

lQ
25.000
20.000
15.000
10.000
Figure 5-5 Typical Ch 1 burst length vs Cx, Cs;
5.000
0.000
52
Sampling Capacitor (nF)
118
228
Vdd = 3.0
507
884
180
160
140
120
100
80
60
40
20
1450
0
Figure 5-7 Typical total burst spacing vs. Vdd;
1.5
2357
2
Cx = 48pF
Cx = 21pF
2.5
Load (pf)
SC = 1, Tbd < 10ms
Cx = 0pF
Power Supply (Volts)
3
15
3.5
25.000
20.000
15.000
10.000
Figure 5-6 Typical Ch 2 burst length vs Cx, Cs;
5.000
0.000
4
Sampling Capacitor (nF)
4.5
52
118 228
5
Vdd = 3.0
5.5
507 884
1450 2357
QT320/R1.03 08/02
Cx = 48pF
Load (pF)
Cx = 21pF
Cx = 0pF