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Capacitance to voltage converter using op amp

 

Problem statement: The layout of Capacitance to Voltage Converter (CVC) for
capacitive sensor transducer became presented. The proposed design will lessen the size, energy
consumption and deliver voltage of the circuit and can be used in high frequency band transducer.
Approach: The design became implemented using the Operational amplifier (Op amp) and capacitive
network. The circuit turned into simulated the use of the PSPICE version parameters primarily based on fashionable 0.13 ?M
CMOS process. Results: The layout changed into capable of degree a wide variety of capacitance versions for
the capacitive transducer. The performance analysis of the design showed acceptable performance
parameters in terms of response, low power intake and a linear output voltage inside the wide
range of capacitive transducer capacitance variation for the energy supply voltage of 1.2 V changed into
achieved. Conclusion/Recommendations: The output voltage of the circuit various linearly with the
version of capacitive transducer capacitance version. The progressed converter become compact and
strong for integration into capacitive measuring structures and suitable for use in environment that
making use of better frequency band.

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