LCC 3.0SQ
The surface-mount pressure dependent capacitance PE1.3N/PE8.0T-3.0SQ has two sensor terminals and can be treated electrically as a ceramic SMD capacitor. All commercial integrated solutions for capacitive sensor interfacing are applicable. Additionally, discrete circuits can be designed with a very low component count suitable for pressure switches and low accuracy measurement systems (the achievable resolution is approximately 10 mbar). The sensors interfacing is further simplified in cases when a micro-controller is already present within the application. Some possible readout strategies in combination with a micro-controller are:
- RC decay time measurement offers the lowest accuracy but fast detection, requires one additional resistor
- switched capacitor circuits are highly accurate for small capacitances, require one additional capacitor
- osciallator frequency measurement can be accomplished in many ways, one possible digital implementation requires three inverters and two resistors
- integration time measurement offers improved accuracy over RC decay rating, requires one additional operational amplifier and two resistors
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Recommended operation PE1.3N/PE8.0T-3.0SQ [98 KB]
Please contact microFAB Bremen for development support.micro-controller evaluation systems can be provided.