DESCRIPTION

· The QT301 is a Capacitance-to-Analog Converter (CAC) IC designed for detecting minute changes in capacitance, suitable for standalone instrumentation applications.

FEATURES

· Utilizes a patented charge-transfer conversion method for precise capacitance measurement.

· Features sub-ranging Direct-to-Analog conversion and rescaleable PWM for a wide dynamic range.

· Includes end-to-end calibration capabilities via CAL pins for gain and span adjustments.

· Operates with a 100 kHz PWM output and employs spread spectrum acquisition bursts to minimize noise.

· Supports sample on demand functionality through the Sync pin, enhancing flexibility in data acquisition.

· Requires only one external sample capacitor, simplifying the circuit design.

APPLICATIONS

· Ideal for material sensors, position sensing, and proximity sensors.

· Suitable for transducer drivers, moisture detection, and fluid level sensors.

· Effective in applications requiring quantified capacitance data such as pressure and humidity sensing.