QT115A-ISG Atmel, QT115A-ISG Datasheet - Page 62

• Manufacturer Part Number: QT115A-ISG
• Description: IC TOUCH SENSOR PROX 8SOIC
• Manufacturer: Atmel

Specifications of QT115A-ISG

• Input Type: *
• Output Type: *
• Interface: *
• Current - Supply: *
• Mounting Type: Surface Mount
• Operating Supply Voltage: 3 V to 5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SO-8
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Package / Case: -
• Lead Free Status / Rohs Status: Details

10620D–AT42–04/09
Mutual-capacitance One-dimensional Sensors
6.3.5
6.3.5.1
6.3.5.2
6-8
Two-layer Medium/Large Slider Or Wheel
Introduction
Slider
When construcing two-layer medium/large sliders and wheels the electrodes are constructed from
slanted “segments”.
For a slider, each “segment” is 4 mm high, and the slider is constructed from as many segments as is
necessary to obtain the required height, as shown in
direction of the slant of the “segments” alternates in
Figure 6-6.
4 mm
X -1
X 1
n
n-
Two-layer Medium/Large Slider (Spatially Interpolated)
q
Max Length
= 90° to 30° Depending on Length Required
0.1–0.5 mm
Gap
4 mm
4 mm
@
(
¾¾¾¾
W x (n-1) + 4 mm
X 2
X -2
tan
n-
n
q
)
X 3
X 3
n-
n-
Y, 0.1–0.5 mm Width
Y, 0.1–0.5 mm Width
Figure 6-6
Figure 6-6 on page
to give a zigzag effect.
Height = 4 mm x Ystripes = 16 mm
6-8. Note the way in which the
Use as many segments
as necessary to achieve
desired height.
Touch Sensors Design Guide
X0
X0
4 mm
4 mm