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 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.
|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)|