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IDT, Integrated Device Technology Inc
Capacitive
ISSI, Integrated Silicon Solution Inc
Capacitive
 
Microchip Technology
Capacitive
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Capacitive

8-Channel Capacitive Touch Sensor with Auto Calibration

ISSI, Integrated Silicon Solution Inc

The IS31SE5100 is an ultra-low power, fully integrated 8-channel solution for capacitive touch-buttons applications. The chip allows electrodes to project sense fields through any dielectric such as glass or plastic. On-chip calibration logic continuously monitors the environment and automatically adjusts on-and-off threshold levels to prevent false sensor activation.

Datasheets:
Product Description

The IS31SE5100 supports the 400kHz I²C serial bus data protocol and includes a field programmable slave address. An INTB is generated when a button event (touched or released) occurs, triggered and cleared condition could be configured by setting the interrupt register. IS31SE5100 is available in QFN-24 (4mm × 4mm) and SSOP-24 packages. It operates from 2.7V to 5.5V over the temperature range of -40°C to +85°C.

Features
  • Complete eight sensors capacitive touch controller for buttons
  • Auto offset compensation
  • Sensitivity adjustable by external capacitor or internal register
  • Extremely low power optimized for portable application
  • Interrupt output
  • 400kHz fast-mode I²C interface
  • 8kV ESD HBM
  • Operating temperature TA = −40°C ∼ +85°C
  • QFN-24 (4mm × 4mm) and SSOP-24 packages
Applications:
  • Mobile phones
  • GPS
  • PDAs
Specifications
  • Current - Supply:175µA
  • Interface:I²C
  • LED Driver Channels:8
  • Number of Inputs:8
  • Operating Temperature:-40°C ~ 85°C
  • Proximity Detection:No
  • Type:Buttons
  • Voltage - Supply:2.7V ~ 5.5V
Parts