Overview: 

The ST02D is an upgrade from the ST02C. This touch sensor can detect capacitance changes at the sensing point using the average capacitance value as a reference. It can sense capacitance changes through any non-conductive medium. This way the sensing module can be well isolated from water and dust. The chip can be operated in a low-power environment. When the power supply is 5v, the current consumption is 110ua in normal operation under power saving mode, and less than 10ua in sleep standby mode. 

Features.

● 2-channel sensor chip with self-calibration function.

● Can sense ‘key touch’ through any non-conductive medium.

● Adjustment of sensitivity by external capacitor.

● Open-Drain output.

● Package (SOP-8) 

Applications: ● Replacement switch.

●  Replacement switch.

●  Body Sensor Detection.

●  Human interface for toys and interactive games.

● light switch.

● replacement diaphragm switches.

● hermetically sealed keyboard panel.

Package (SOP-8)