CAPACITANCE TO DIGITAL CONVERTER

The QT300 charge-transfer (“QT’”) IC is a self-contained Capacitance-to-Digital-Converter (CDC) capable of detecting femotofarad level changes in capacitance. While designed primarily for instrumentation applications, it can be used also for touch control applications where signal processing is best handled by a host MCU.

● Capacitance to Digital Converter (CDC) IC
● Direct-to-digital conversion, 16 bits
● Log response: Wide dynamic range
● Outputs raw data to a host device
● Single wire UART interface
● Master or Slave mode SPI interface
● Programmable clock speed
● Turns objects into intrinsic touch sensors
● One external sample capacitor to control gain
● Multiple QT300’s possible on one SPI bus

APPLICATIONS
● Fluid level sensors
● Prox sensors
● Moisture detection
● Position sensing
● Transducer driver
● Material sensors