CAV424

Features:

• Ratiometric Supply Voltage: 5V ± 5%
• Wide Operating Temperature Range: 40...+85
• High Detection Sensitivity of Relative Capacitive Changes: 5% 100%
• Detection Frequency up to 2kHz
• Differential Output Signal with Great Voltage Swing
• Integrated Temperature Sensor
• Adjustable with only two Resistors


Application

• Industrial Process Control
• Distance Measurement
• Pressure Measurement
• Humidity Measurement
• Level Control


Pinout




Description

The CAV424 is an integrated C/V converter and contains the complete signal processing unit for capacitive signals on chip. The CAV424 detects the relative capacitive change of a measuring capacity to a fixed reference capacity. CAV424 IC is optimised for capacities in the wide range of 10pF to 2nF with possible changes of capacity of 5% to 100% of the reference capacity. The differential voltage output signal can be directly connected to a following A/D converter or another signal conditioning IC from Analog Microelectronics. Using the integrated temperature sensor, digital adjustable systems can be built easily.