QT60248C-ASG Atmel, QT60248C-ASG Datasheet - Page 51

• Manufacturer Part Number: QT60248C-ASG
• Description: IC TOUCH SENSOR 24KEY 32TQFP
• Manufacturer: Atmel
• Series: QMatrix™, QProx™r
• Type: Capacitiver

Specifications of QT60248C-ASG

• Number Of Inputs/keys: 24 Key
• Resolution (bits): 9, 11 b
• Data Interface: Serial, SPI™
• Voltage - Supply: 3 V ~ 5 V
• Current - Supply: 25mA
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 32-TQFP, 32-VQFP
• Output Type: *
• Interface: *
• Input Type: *
• For Use With: 427-1087 - BOARD EVAL QT60248-AS QMATRIX
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Touch Sensors Design Guide
Figure 5-4.
Figure 5-5.
Make all sections equal width, repeating
sections as required for desired total width
Note: Make all the rings equal width, repeating rings as required for desired total diameter.
Where a choice exists, use the largest number of rings to achieve the desired diameter.
Rings are shown in different colours for clarity, but are electrically connected where they meet.
Channel 0
Medium/Large Slider (Spatially Interpolated)
Medium/Large Wheel (Spatially Interpolated)
4 mm
Channel 2
5–8 mm
Per Ring
Channel 0
0.1–0.5 mm
Channel 2
4 mm
4 mm
Channel 1
Self-capacitance One-dimensional Sensors
4 mm
Adjust taper angle to fill
0.1 to 0.5 mm Gap
remaining space
5–9 mm
Channel 1
4 mm
per section
4-6 mm
10620D–AT42–04/09
5-5