IQ Switch
®
ProxSense
®
Series
Copyright © Azoteq (Pty) Ltd 2012
Page 1 of 3
All Rights Reserved
Revision 1.00
January 2012
IQS128 on
AZP242A02 Connection Guide
1 IQS128 on AZP242A02
2 PCboard (AZP242A02)
3 PCB Layout
Figure 1.1
Top layer component placement
GND
CTRL/ND
VDDHI
CX/Sense plate
OUT
VDDHI
GND
C2
1uF
CX
OUT
CTRL/ND
VREG
C3
1uF
GND
C1
100pF
C4
100pF
R2
470R
OUT
OUT
R3
2K0
CX
CTRL/ND
3
OUT
1
VREG
4
CX
6
VSS
2
VDDHI
5
U1
IQS128 TSOT23-6
CTRL/ND
CTRL/ND
R1
2K0
VDDHI
VDDHI
Connect CX to sense button
(See Appnote: AZD008 for
button design guidelines)
OUT = DYCAL Output
CTRL = Input CTRL or Touch output
ND = Multiplexed optional Noise Detector
Optional: 100pF capacitors for additional
RF immunity (C1 and C4).
Summary of Contents for IQ Switch IQS128
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