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SX8661 Datasheet(PDF) 79 Page - Semtech Corporation

Part # SX8661
Description  Low Power, Capacitive Button Touch and Proximity Controller
PDF  88 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SX8661 Datasheet(HTML) 79 Page - Semtech Corporation

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ADVANCED COMMUNICATIONS & SENSING
DATASHEET
Revision v3.2, January 2011
© 2011 Semtech Corp.
www.semtech.com
79
SX8661
Low Power, Capacitive Button Touch and Proximity Controller
(8 sensors) with LED Drivers and Analog Output
7
APPLICATION INFORMATION
7.1
Triple proximity reporting
This section describes in further detail the quickstart application of chapter 3.1.
One AOI with seven LEDs are used. The intensity level of the LEDs show if proximity (medium intensity) or a
touch (maximum intensity) is detected. The LEDs are off in case no finger is present.
Figure 62
Typical Application (one AOI), triple proximity reporting
In case of proximity all LEDs (d0 to d6) are enabled to a medium intensity.
If a sensor is touched then only the corresponding LED will light up with full intensity. The other LEDs remain at
medium intensity.



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