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Add the CAV424 - C/V-Converter for Single and Differential Measurement to your store or catalog  
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CAV424 - C/V-Converter for Single and Differential Measurement

Brand: Analog Microelectronics GmbH
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CAV424 is an integrated C/V-converter suitable for the capacitance measurement in single or differential capacitive sensor systems.

Its output voltage is a linear function of the reciprocal measurement capacitance and it is ratiometric to thesupply voltage.

The IC is completely analog leading to a fast response time and a resolution only limited by the signal to noise ratio.

CAV424 provides the complete electronics needed for the conversion of single or differential capactive input signals into voltage output signals, which can be an amplified and offset adjusted using external trimming resistors.

The IC can be used as stand-alone analog signal-processing IC or as front-end for a micro processor for electronically calibratable sensor systems.

An Excel-sheet simplifies the external component’s dimensioning as well as the trimming of complete sensor systems.
Features
  • Large Measurement Capacitance Range: 5 pF Up To 40 nF
  • Suitable for Single And Differential Capacitive Sensor Heads
  • High Detection Sensitivity
  • Ratiometric Voltage Output
  • Adjustable Offset and Gain
  • Fast Response Time
  • Integrated Temperature Sensor
  • Supply Voltage 5V ± 5%
  • Large Temperature Range: -40°C...+105°C
  • Easy-to-Use Calibration Procedure: Excel Sheet
  • Available in SO16 or as Die
  • RoHS Conform

Specifications

Brand

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

RoHS Status

  • Compliant

  • Humidity Measurement
  • Distance Measurement
  • Capacitive Pressure Sensors
  • Level Sensing
  • Material Identification
  • Object Detection

Documentation

Document

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