Azoteq ProxSense IQS127D Instruction Manual

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
G
ND
POUT
VDDHI
CX/Sense plate
TOUT/DATA
CXTOUT
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
2VDDHI 5
U1
IQS127TSOT23-6
VDDHI
C1
1uF
C3
100pF
POUT
GND
VDDHI
Connect CX to sense button
(See Appnote: AZD008 for
button design guidelines)
TOUT = Touch Output
POUT = ProximityOutput
Optional: 100pF capacitors
for additional RF immunity
(C3 and C4).

IQ Switch®ProxSense®
Copyright © Azoteq (Pty) Ltd 2010 Page 2 of 2
All Rights Reserved Revision 0.02 September 2011
The IQS127 ProxSense® IC is a fully integrated capacitive sensor
device in 3 varieties:
IQS127D: Dual outputs (Touch button AND Proximity sensor).
IQS127S: Touch button OR Proximity sensor incorporating a Driven
Shield.
IQS127C: Touch and Proximity sensor for metal overlays.
Features
Automatic Antenna Tuning Implementation (ATI) - Automatic
adjustment for optimal performance.
Internal Capacitor Implementation (ICI) – reference capacitor on-
chip
Low Power, suitable for battery applications
Supply voltage: 2.95V to 5.5V
Advanced on-chip digital signal processing
User selectable:
4 Power Modes (13uA min)
IO sink / source
Time-out for stuck key
Output mode (Direct / Latch / Toggle)
Proximity and Touch Button sensitivity settings
Minimum external components
Keys:
Touch: 5mm x 5mm or larger (overlay thickness dependent)
Proximity: Various electrical options (wire / PCB trace / ITO /
conductive foil)
Dielectric: Various non-metal materials (i.e. glass, plastic, painted
surfaces)
Dielectric thickness: 6 mm plastic, 10 mm glass
1-Wire data streaming
Contact Information
Please visit www.azoteq.com for comprehensive datasheets,
application notes, reference designs and a list of distributors for your
region.

Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Azoteq:
IQS127DEV01S