IQ Switch
®
ProxSense
®
Series
Copyright © Azoteq (Pty) Ltd 2010
Page 1 of 2
All Rights Reserved
Revision 0.02
September 2011
IQS127D on
AZP112A05 Connection Guide
1 IQS127D on AZP112A05
2 PCboard (AZP112A05)
3 CT-Tool Connections
IQS127 pins
CT200 / CT220 pins
Programming
Streaming
GND
1
1
VDDHI
3
3
POUT
5
CX
6
TOUT/DATA
10
GND
POUT
VDDHI
CX/Sense plate
TOUT/DATA
CX
TOUT
VREG
C2
1uF
GND
C4
100pF
R3
470R
TOUT
TOUT
R2
2K0
CX
POUT
POUT
R1
2K0
VDDHI
POUT
3
TOUT
1
VREG
4
CX
6
VSS
2
VDDHI
5
U1
IQS127 TSOT23-6
VDDHI
C1
1uF
C3
100pF
POUT
GND
VDDHI
Connect CX to sense button
(See Appnote: AZD008 for
button design guidelines)
TOUT = Touch Output
POUT = Proximity Output
Optional: 100pF capacitors
for additional RF immunity
(C3 and C4).
