Pressure Sensors
Design Support
Application Notes


CAV424 - C/V-Converter for Single and Differential Measurement

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Package variants of the C/V-converter IC CAV424
CAV424 is an integrated capacitance-to-voltage converter suitable for the measurement of single or differential input capacitances. It generates a ratiometric output voltage signal and can be used as front end for µC. The IC's wide measurement range, low EM susceptibility and high sensitivity allow a multitude of applications.


  • Humidity measurement
  • Distance measurement
  • Capacitive pressure sensors
  • Level sensing
  • Material identification
  • Object detection

Short Specifications

Supply Voltage (VCC)

5 V ± 5%

Capacitance input range

5 pF .. 40 nF (single), 0 .. 40 nF (differential)

Voltage output

1 .. 4 V (ratiometric), adjustable

Reference voltage

2.5 V (ratiometric)

Temperature range

-40 °C .. 105 °C

Temperature sensor output

2.20 .. 2.45 V (8 mV/K)

Package / Delivery forms

SO16, on DIL16-adapter, sawn 6″ wafer on blue foil