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) |
| Quantity | 10 Pieces |
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