AT42QT1070-SSU Atmel, AT42QT1070-SSU Datasheet - Page 63

• Manufacturer Part Number: AT42QT1070-SSU
• Description: IC TOUCH SENSOR 7KEY 14-SOIC
• Manufacturer: Atmel
• Type: Capacitiver

Specifications of AT42QT1070-SSU

• Number Of Inputs/keys: 7 Key (Comms), 5 Key (Standalone)
• Data Interface: I²C
• Voltage Reference: Internal
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-SOIC (0.154", 3.90mm Width)
• Supply Voltage: 1.8 V to 5.5 V
• Dimensions: 3 mm L x 3 mm W x 0.8 mm H
• Temperature Range: - 40 C to + 85 C
• Termination Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Resolution (bits): -
• Touch Panel Interface: -
• Data Rate/sampling Rate (sps, Bps): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

6.3.5.3
Touch Sensors Design Guide
Wheel
To form a wheel, the design is wrapped around to form a circle, the X segments becoming curved tooth
shapes (see
Figure 6-7.
Figure 6-7 on page
Two-layer Medium/Large Wheel (Spatially Interpolated)
X Electrodes x n
360°
n
6-9).
3
4
x
360°
n
4 mm
4 mm
4 mm
4 mm
2 mm
Mutual-capacitance One-dimensional Sensors
Arc center is coincident with the middle
of the bisecting line in center third segment
4 mm
4 mm
4 mm 2 mm
Y Rings
10620D–AT42–04/09
6-9