TTP223 is a single channel touch detector IC that could be used as a 1 touch key driver. It is a useful interface when replaced with a traditional button key. It has a low power consumption with a wide range of operating voltage. It has an auto calibration feature for life and it has a re-calibration period of about 4.0 seconds. The sensitivity can be adjusted using an external capacitor of 0 to 50 pF.

Pin Description

Pin Number      Pin Name             Description

        1                      Q                  CMOS Output Pin
        2                    VSS             Power Supply Negative Pin
        3                      I                Input of the Sensor Port
        4                   AHLB           Output Active High or Low
        5                   VDD            Power Supply Positive Pin
        6                   TOG             Output Type Option Pin

The TTP223 touch controller is the exact non-contact alternative to traditional button switches. The IC uses an onboard sense pad that uses copper trace as a touch element and the touch sensitivity can be configured using an additional external capacitor ranging from 0 to 50pF. There are two pins, AHLB and TOG that could be used to configure the output state either high or low or toggle mode enable option.

Specification

• Type :- Single Channel Touch IC
  
• Operating Voltage :- 2V-5V DC
  
• Operating Current :- 1.5 uA
  
• Maximum operating Current :- 3.0 uA
  
• Response time :- 220ms at low power mode.
  
• Adjustable Sensitivity :- Using external capacitor :- (0-50 pF)

(Note: Product Image are shown for illustrative purposes only and may different from the actual product)