QT320-IS Atmel, QT320-IS Datasheet - Page 14

• 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
10.00
10.00
1.00
0.10
0.01
Figure 5-1 Typical Ch 1 Sensitivity vs. Cx;
1.00
0.10
0.01
Figure 5-3 Typical Ch 1 Sensitivity vs. Cx;
0
0
Threshold = 16, Vdd = 3.0
Threshold = 6, Vdd = 3.0
10
10
20
20
Cx Load
Cx Load
30
30
40
40
50
50
4.7nF
9nF
19nF
43nF
74nF
124nF
200nF
4.7nF
9nF
19nF
43nF
74nF
124nF
200nF
14
10.00
Figure 5-2 Typical Ch 2 Sensitivity vs. Cx;
Figure 5-4 Typical Ch 2 Sensitivity vs. Cx;
10.00
1.00
0.10
0.01
1.00
0.10
0.01
0
0
Threshold = 16, Vdd = 3.0
Threshold = 6, Vdd = 3.0
10
10
20
20
Cx Load
Cx Load
30
30
QT320/R1.03 08/02
40
40
50
50
4.7nF
9nF
19nF
43nF
74nF
124nF
200nF
4.5nF
9nF
19nF
43nF
74nF
124nF
200nF