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A capacitor made of thin metal-film electrodes interspersed with thin dielectric layers; once leads are connected to the electrodes’ opposing projecting ends, the assembly is crushed and sintered to create a solid monolithic block.
The range of values they can achieve and their performance limitations prevent monolithic capacitors from being utilised commonly in integrated circuits.
The collector-base or emitter-base diffusion of the transistor forms the reverse-biased PN junction that forms the junction capacitor, which comes in two different varieties. The depletion thickness has an inverse relationship with the capacitance and a direct relationship with the junction area.
The Global monolithic capacitive barometer market accounted for $XX Billion in 2021 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2022 to 2030.
An innovative SOI monolithic capacitive sensor for measuring absolute and differential pressure. A unique, 15-step SOI method is used to make the sensor.
In terms of sensor design, the technique primarily provides excellent versatility. With the right sensor package in place, absolute or differential pressure reading is easily accomplished.
By adjusting a single design parameter, it is simple to control measurement sensitivity and span over a large range of values. Avoiding the creation of p-n junctions will strengthen the sensor’s resistance to temperature increases and enable high-temperature post-processing without doping profile damage.
The proposed design permits the use of a standard p-well CMOS post-process. A CMOS switched-capacitor ASIC that is created and shown here may achieve sensitivity of 2 mV/kPa, within a span of 180 kPa (2%) and a bandwidth of 25 kHz.
The performance of the ASIC has been carefully designed to depend as little as possible on the CMOS process and transistor-parameter fluctuations that rise as a result of the substrate’s poor uniformity.
In order to protect the circuit against parasitic capacitances coupled in parallel with sensing capacitors, a cutting-edge design has been devised.
The precision mentioned above is significantly enhanced with the addition of extra analogue signal processing. The sensors’ primary uses are in medical equipment like respirators and sphygmomanometers, which demand great biocompatibility and reliability.
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