IQS253EV02S Azoteq, IQS253EV02S Datasheet - Page 5

• Manufacturer Part Number: IQS253EV02S
• Description: Touch Sensor Development Tools IQS253 Eval Kit
• Manufacturer: Azoteq

Specifications of IQS253EV02S

• Rohs: yes
• Interface Type: I2C

4 Reference Designs
4.1 IQS253 Self-Capacitance Reference Design
4.2 IQS253 Projected Capacitance Reference Design
Copyright © Azoteq (Pty) Ltd 2012.
All Rights Reserved.
CTX0
Connect to sense buttons
(See Appnote: AZD036 for button design
guidelines)
VIN
GND
Connect to sense buttons
(See Appnote: AZD036 for button design
guidelines)
CRX0
CRX1
CRX2
VIN
GND
VDDHI
GND
CRX0
CRX1
CRX2
VDDHI
GND
VDDHI
Figure 4.1
Figure 4.2
R4
100
R1
470
R2
470
R3
470
R4
470
R1
470
R2
470
R3
470
IQS253 Self Capacitance Mode Reference design
RDY/RF
SDA
SCL
RDY/RF
IQS253 Projected Mode Reference design
SDA
SCL
10
2
3
9
7
8
6
U1
IQS253
10
2
3
9
7
8
6
CX0/CRX0
CX1/CRX1
CX2/CRX2
SDA
SCL
RDY/ND
B_OUT/CTX
U1
IQS253
ProxSense
CX0/CRX0
CX1/CRX1
CX2/CRX2
SDA
SCL
RDY/ND
B_OUT/CTX
IQS253EV02 Evaluation Kit User Manual
IQ Switch
VDDHI
VREG
GND
VDDHI
VREG
GND
®
4
5
1
GND
4
5
1
Revision 1.0
Series
GND
®
SDA = Serial Data (I2C)
SCL = Serial Clock (I2C)
RDY = Ready Line
Optional: 100pF capacitors for additional RF immunity.
SDA = Serial Data (I2C)
SCL = Serial Clock (I2C)
RDY = Ready Line
Optional: 100pF capacitors for additional RF immunity.
GND
GND
C4
1uF
C4
1uF
C3
100pF
C3
100pF
C2
100pF
C2
100pF
VDDHI
GND
VDDHI
GND
C1
1uF
C1
1uF
VDDHI
VDDHI
R6
10K
R7
10K
R5
10K
R6
10K
R7
10K
R5
10K
Page 5 of 6
June 2012
SDA
SCL
SCL
SDA
SCL
SCL
SDA
SCL
RDY
SDA
SCL
RDY