Analog Microelectronics CAV414
The CAV414 is an universal multipurpose interface for capacitive sensors and contains the complete signal processing unit on chip. The CAV414 detects the relative capacitive change of a measuring capacity to a fixed reference capacity. The 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.FEATURES
● Wide Supply Voltage Range: 6...35V● Wide Operating Temperature Range: –40°C...+85°C
● High Detection Sensitivity of Relative Capacitive Changes: 5% – 100%
● Detection Frequency up to 2kHz
● Adjustable Voltage Range: 0...5/10V, other
● Reference Voltage Source: 5V
● Protection against Reverse Polarity
● Output Current Limitation
● Adjustable with only two Resistors CAV414
GENERAL DESCRIPTION
The voltage output is formed by a high accuracy instrumentation amplifier in combination with an operational amplifier. With only a few external components, the CAV414 is suitable for a great variety of applications including a zero compensation.APPLICATIONS
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● Industrial Process Control Distance Measurement Pressure Measurement Humidity Measurement Level Control DELIVERY
● DIL16 packages (samples)
● SO16(n) packages
● Dice on 5“ blue foil BLOCK DIAGRAM COSC 12 Reference Oscillator CAV414 IA OP VCC 9 CX1 16 Integrator 1 Integrator 2 Signal Conditioning VOUT 8 7 10 CX2 14 GAIN GND...