Transmitter IC for Capacitive Signals CAV444

DESCRIPTION

CAF444 is an integrated capacitance-to-voltage transducer. The IC is particularly suitable for all measurements designed to convert a capacitive input signal into a voltage that is directly proportional to the change in capacitance to be measured.


BLOCK DIAGRAM

Block Diagram CAV444

FEATURES

  • Differential output signal
  • Wide capacitor measuring range: 18 pF to 2.2 nF
  • Linear transfer behavior
  • Adjustable offset voltage
  • Adjustable full-scale signal
  • Detection frequency: 15 Hz to 1.9 kHz
  • Wide temperature range: -40°C to +85°C
  • Simple calibration with an Excel program

APPLICATIONS

  • Humidity measurement
  • Level sensing
  • Material identification
  • Object detection
  • As an input circuit or microprocessors or as a stand-alone IC

DATA SHEET