Results 261 to 270 of about 97,530 (306)
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Capacitively-Coupled CMOS VCSEL Driver Circuits
IEEE Journal of Solid-State Circuits, 2016A capacitively-coupled laser diode driver (LDD) for common-cathode vertical-cavity surface-emitting lasers (VCSELs) designed in 65 nm CMOS intended for short-reach parallel optical interconnects is presented. The LDD consists of a capacitively-coupled voltage-mode high-frequency path and a direct-coupled path that provides low-frequency signal ...
Victor Kozlov, Anthony Chan Carusone
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Weakly-Coupled Resonators in Capacitive Readout Circuits
IEEE Transactions on Circuits and Systems I: Regular Papers, 2015Low energy consumption and wide operating temperature range of capacitors made them common in sensor designs, e.g., MEMS accelerometers, and hence increased the popularity of capacitive readout circuits. Their main challenges, in either discrete or integrated implementations, are sensitivity, noise, energy consumption, and parasitic components at the ...
Siamak Hafizi-Moori, Edmond Cretu
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Diode rectifying circuits with capacitance filters
Electrical Engineering, 1941This paper presents the results of an investigation of the half wave and full wave rectifier circuits with a simple capacitance filter and using either high vacuum or mercury vapor tubes. In the fore part of the paper an equivalent circuit is set up such that when the tube is conducting, a mercury vapor tube is represented by a constant voltage drop or
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Design of a Capacitance Measurement Circuit with Input Parasitic Capacitance Elimination
2020 IEEE 5th International Conference on Integrated Circuits and Microsystems (ICICM), 2020This paper proposes a capacitance sensing circuit which converts the change of input capacitance into digital code as output signal. The whole CDC circuit is designed using SMIC 0.18\ \mu\mathrm{m}$ CMOS process technology in cadence. It contains an AFE circuit and an advanced single-slop ADC circuit.
Dantong Wu +4 more
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Analysis of a Direct Interface Circuit for Capacitive Sensors
IEEE Transactions on Instrumentation and Measurement, 2009We present the theoretical analysis and performance results of a direct microcontroller unit (MCU) interface circuit for capacitive sensors based on the charge-transfer method, when stray capacitances are considered. The interface circuit can implement two alternative two-point calibration techniques that reduce the effects of stray capacitance ...
Jorge E. Gaitán-Pitre +2 more
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A Smart Digital-Readout Circuit for a Capacitive Microtransducer
IEEE Micro, 1984By incorporating on-chip signal preprocessing, this CMOS switched-capacitor-based A/D converter improves the speed and accuracy with which a microprocessor system can sense physical forces such as pressure and acceleration.
Ernst Habekotté, Stefan Cserveny
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Performance analysis of a digital capacitance measuring circuit
Review of Scientific Instruments, 2015This paper presents the design and study of a digital capacitance measuring circuit with theoretical analysis, numerical simulation, and experimental evaluation. The static and dynamic performances of the capacitance measuring circuit are first defined, including signal-to-noise ratio (SNR), standard deviation, accuracy, linearity, sensitivity, and ...
Lijun Xu +3 more
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Interface circuit for capacitive accelerometer
Sensors and Actuators, 1989Abstract A capacitive silicon microaccelerometer can be utilized in an electrostatic force-balancing configuration. This closed-loop configuration has two advantages: (a) Different ranges can be introduced by changing the feedback factor: in this way input accelerations ranging from 1 μ g to 1 g can be measured with the same accelerometer. (b) A
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Design of Minimal Capacitance Detect Circuit for MEMS Capacitive Sensor
Key Engineering Materials, 2015The capacitance among the structure of the accelerometer is rather small, usually at sub-pF level. Detection of the capacitance among the sensor’s tiny structure and analysis of the variation of these capacitances are necessary to improve the sensor’s performance.
Hao Qu +5 more
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A simple interface circuit to measure very small capacitance changes in capacitive sensors
IEEE Transactions on Instrumentation and Measurement, 2001This paper presents an easy to make interface circuit to measure very small percentage capacitance variations in capacitive sensors specially suitable for industrial measurements. A computer controlled 24 bit A/D converter is employed to obtain a higher resolution. This interface circuit can be used with any type of a capacitive sensor.
D. M. G. Preethichandra, Katsunori Shida
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