Capacitive Touch Controllers
  • SX8663
    • Capacitive Button Matrix (up to 36) and Proximity Controller with Individual LED Drivers and Buzzer Output
  • SX8662
    • Capacitive Button Matrix (up to 36) Controller with Individual LED Drivers and Buzzer Output
  • SX8660
    • Ultra Low Power, Capacitive Button Touch Controller (8 sensors) with Enhanced LED Drivers and Analog
  • SX8649
    • Ultra Low Power, Capacitive Button and Wheel Touch Controller (8 sensors) with Enhanced LED Drivers
  • SX8648
    • Ultra Low Power, Capacitive Button and Slider Touch Controller (8 sensors) with Enhanced LED Drivers
  • SX8647
    • Ultra Low Power, Capacitive Wheel Touch Controller (8 sensors) with Enhanced LED Drivers
  • SX8646
    • Ultra Low Power, Capacitive Button Touch Controller (8 sensors) with Enhanced LED Drivers
  • SX8645
    • Ultra Low Power, Capacitive Button and Wheel Touch Controller (12 sensors) with Enhanced LED Drivers
Semtech SX8661

Semtech SX8661

Low Power, Capacitive Button Touch and Proximity Controller (8 sensors) with LED Drivers and Analog Output

The SX8661 is an ultra low power, fully integrated 8-channel solution for capacitive touch-button and proximity detection applications. Unlike many capacitive touch solutions, the SX8661 features dedicated capacitive sense inputs (that requires no external components) in addition to 8 general
purpose I/O ports (GPIO).

Features


  • Complete 8 Sensors Capacitive Touch-Button Solution
    • Up to 8 LED Drivers for individual Visual Feedback with Auto Lightening
    • Configurable Single or Continuous Fading Mode
    • 256 steps PWM Linear and Logarithmic control
  • Proximity Sensing up to several centimeters
  • High Resolution Capacitive Sensing
    • Up to 100pF of Offset Cap. Compensation at Full Sensitivity
    • Capable of Sensing up thru 5mm thick Overlay Materials
  • Up to 2 Analog Output Interfaces (AOI-A and AOI-B)
    • Enable button detection thru host’s ADC
  • Support of buzzer for audible feedback
  • User-selectable Button Reporting Configuration
    • Report Single or Report Strongest
  • Extremely Low Power
    • 8uA (typ) in Sleep Mode
    • 70uA (typ) in Doze Mode (195ms)
    • 200uA (typ) in Active Mode (30ms)
  • Programmable Scanning Period from 15ms to several seconds
  • Auto Offset Compensation
    • Eliminates false triggers due to environmental factors (temperature, humidity)
    • Initiated on power-up and configurable intervals
  • Multi-Time In-Field Programmable Firmware Parameters for Ultimate Flexibility
    • On-chip user programmable memory for fast, self contained start-up
  • No External Components per Sensor Input
  • Internal Clock Requires No External Components
  • Differential Sensor Sampling for Reduced EMI
  • Optional 400 KHz I²C Interface with Programmable Address
  • -40°C to +85°C Operation

Applications


  • LCD TVs, Monitors
  • White Goods
  • Notebook/Netbook/Portable/Handheld computers
  • Consumer Products, Instrumentation, Automotive
  • Mechanical Button Replacement

Packaging

  • MLPQ-UT28

Order Codes


SX8661I07AULTRT - 3000 Units/reel, RoHS/WEEE compliant and Halogen Free