IQ Switch
®
ProxSense
®
Series
ProxSense
®
Trackpad Module Datasheet
Capacitive Trackpads with Gesture Recognition for Headphones & Audio
Equipment with Direct Connection to Bluetooth SoCs
The ProxSense
®
series of capacitive trackpads offers best in class sensitivity, signal to
noise ratio and power consumption. Automatic tuning for sense electrodes guarantees
optimal operation over production and environmental change
.
Main Features
Trackpad with on chip XY coordinate calculation
1792 x 1792 resolution
170Hz scan rate for gesture recognition
Adjustable Sensitivity
Active high or low output
Proximity wake up from low power
Automatic drift compensation
Gestures mapped to I/O pins for Audio Adjustment
Swipe Up
Swipe Down
Swipe Backwards
Swipe Forwards
Swipe Up & Hold
Swipe Down & Hold
Swipe Forwards & Hold
48mm
Page 1 of 21
May 2017
Tap
Tap & Hold
Low Power, suitable for battery applications
Supply voltage: 1.65V to 3.6V
<40µA active sensing Low Power mode
Direct Interface to BlueTooth audio IC
Applications
Bluetooth Headphones
Mechanical Push Button Replacement
Portable Electronics
Wearable Electronics
48mm
Bluetooth Speakers
Copyright © Azoteq (Pty) Ltd 2017.
All rights reserved.
Trackpad Module Datasheet V1.08
60mm
Swipe Backwards & Hold
40mm
48mm
54mm
IQ Switch
®
ProxSense
®
Series
Contents
1
2
3
4
5
6
7
8
9
10
11
HARDWARE DESCRIPTION .................................................................................................................................. 3
TPR40 ................................................................................................................................................................. 7
TPR40-V ............................................................................................................................................................. 8
TPR48 ................................................................................................................................................................. 9
TPR54 ................................................................................................................................................................10
TPE48 ................................................................................................................................................................11
TPE60 ................................................................................................................................................................12
TPS48 ................................................................................................................................................................13
GESTURE IMPLEMENTATION .............................................................................................................................14
SPECIFICATIONS ................................................................................................................................................18
ORDERING INFORMATION ................................................................................................................................20
Datasheet Revision History
Version
1.00
1.01
1.02
1.03
1.04
1.05
1.06
1.07
1.08
Description
Preliminary Draft
First Release
Updated ordering Information for Value Line
Update Illustrations
Update TPR54 design
Add TPR40-V
Update output tables
Output type correction
Update available version in order info
Date
May 2015
June 2015
August 2015
Sept 2015
Nov 2015
Nov 2016
Jan 2017
April 2017
May 2017
Copyright © Azoteq (Pty) Ltd 2017.
All rights reserved.
Trackpad Module Datasheet V1.08
Page 2 of 21
May 2017
IQ Switch
®
ProxSense
®
Series
1 Hardware Description
All trackpad modules are available on RoHS2 and REACH compliant FR4 PCB material. The
module PCBs are 1mm thick and have an OSP finish, with tinned pads for the user required
solder points. The standard modules are not Halogen free. The trackpad sensing is done with
IQS572, connected to an 8x8 diamond grid for 1792 pixel resolution in the X and Y directions.
The modules are supplied with 3M double sided adhesive tape (PSA). Only certain modules
include a connector, please consult Section 11.
Table 1.1
Summary of Trackpad Offerings
Shape
Round
Round
Round
Ellipse
Ellipse
Rectangle
Module Name
TPR40
TPR48
TPR54
TPE60
TPE48
TPS48
Size
Ø40mm
Ø48mm
Ø54mm
60mm x 46mm
48mm x 38mm
48mm x 38mm
The TPR40 is also available in the
Value
Line series. The value line uses the IQS525 in place
of the IQS572, with maximum resolution of 1024 x 1024.
1.2
PCB Specification
-
-
-
-
-
-
Material: 2-layer, FR4 PCB (non-HF material)
Conductor: 35μm Copper (1oz. Cu)
Finish: OSP (tinned)
Size: Module Specific
PCB Final Thickness = 1.0mm +/- 10%
Outline: Precision DIE-CUT Profile
1.3
Module Orientation
All the modules have a cut in the PCB indicating the top of the module, which could also be
used to align the module on the application overlay. This Notch can be seen in Figure 1.1
Tip: An overlay must be secured
to the module with double sided
adhesive tape without air gaps
for performance evaluation.
Copyright © Azoteq (Pty) Ltd 2017.
All rights reserved.
Trackpad Module Datasheet V1.08
Page 3 of 21
May 2017
IQ Switch
®
ProxSense
®
Series
Figure 1.1
Top Notch Illustrating Module Orientation.
1.4
Adhesive (PSA) Specification
All 6 modules offered are supplied with double sided adhesive applied on the trackpad for
ease of integration. The adhesive is kept with the liner kept in place, with a pull tab for easy
removal without tearing:
-
-
-
-
-
Type: 3M 468 200MP
Thickness = 0.13mm
Liner = Polycoated Kraft Paper
Liner w/ Pull-Tab (No glue on Pull-Tab)
Adhesive sized to fit entire tracking area (module specific)
1.5
Total Thickness
The total thickness given in Figure 1.2 does not include the protective liner on the adhesive.
The liner needs to be removed when the module is assembled into the application. The
highest part (thickest part of the module) of the assembly is a 0603 capacitor – C2.
2.03mm ± 10%
Components
Adhesive
PCB
Figure 1.2
Maximum Module Thickness.
1.6
Compatible Overlay Thickness
The compatible overlay thicknesses are shown in Table 1.2 below. The modules have a solder
link, S1, which can select one of two sensitivity settings tuned for different overlay thicknesses.
Copyright © Azoteq (Pty) Ltd 2017.
All rights reserved.
Trackpad Module Datasheet V1.08
Page 4 of 21
May 2017
IQ Switch
®
ProxSense
®
Series
Table 1.2
Module Overlay Compatibility
1
.
Overlay Range
1mm – 2mm
2mm – 3mm
Solder link S1
Open
Closed
For non-uniform overlays, the maximum curve in the overlay is limited to a 1mm height
difference over the trackpad surface as shown in Figure 1.3.
Maximum Height variation of 1mm
Overlay
Adhesive
PCB
PCB
Figure 1.3
Maximum height variation in the overlay.
1
Note: Pilot Built 1 (PB1) modules only support the 1-2mm setting. Contact Azoteq for updated FW.
Trackpad Module Datasheet V1.08
Page 5 of 21
May 2017
Copyright © Azoteq (Pty) Ltd 2017.
All rights reserved.
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