IQS127EV02S Azoteq, IQS127EV02S Datasheet - Page 5

• Manufacturer Part Number: IQS127EV02S
• Description: Touch Sensor Development Tools IQS127 Eval Kit 2
• Manufacturer: Azoteq

Specifications of IQS127EV02S

• Rohs: yes
• Interface Type: 1-Wire, Direct
• Operating Voltage: 5 V

4 Round Daughter Board
Figure 4.1 shows the top view of the round
daughter board. Its features include:
Figure 4.2 shows the bottom view of the
round
descriptions are given in Table 4.1. The
round daughter board makes it extremely
easy to wire the IQS127 into existing
applications for testing. It needs only
VDDHI (pin 5) and GND (pin 2), as it has a
2
Copyright © Azoteq (Pty) Ltd 2010.
All Rights Reserved.
Used for added RF immunity in extreme environments (GSM band)
Bi-colour Prox and Touch LED
Button on board
Table 4.1
daughter
Figure 4.1
board.
Component
Component descriptions for round daughter board.
R3 or R4
R1 & R2
C1,C3
C2,C4
DS1
2
2
ProxSense
Component
Top view of round daughter board.
(Added ESD protection)
IQ Switch
decoupling capacitor
decoupling capacitor
CX selection resistor
LED current limiting
Internal regulator
Evaluation Kit: User
Power Supply
Bi-colour LED
™
resistor
Use
Revision 1.0.2
Series
®
button and output LEDs mounted on the
PCB already. To program the round
daughter board through the mother board,
R3 (2k) should be moved to R4 footprint.
R4 should also be placed instead of R3, to
connect larger/different sense plates to the
IQS127 (pin 6).
Backlighting through the button
Two possible assemblies:
 Dual Mode
 Streaming Mode
Manual
Typical
100pF
100pF
Value
1uF,
1uF,
N/A
2k
2k
2
2
November 2010
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