High-speed interface circuit for differential capacitance transducers

Design of Interface Circuit for Differential Capacitance Measurement

A Capacitive Sensor Interface Circuit Based On Phase Differential Method

(1247) A 70°Phase Margin Differential OPAMP with Positive Feedback in Flexible a-IGZO TFT Technology Authors: (1306) Flexible PVDF Ferroelectric Capacitive Temperature Sensor (1898) Biomedical Sensor Interface for PLI Cancellation (1967) A Driver Circuit based on the emerging GaN-on-CMOS Process. Controller and Differential Sensing Circuit. Sang Hyuck Bae A fully differential circuit was design...

A generic interface chip for capacitive sensors in low-power multi-parameter microsystems

This paper presents a generic low-power sensor interface chip compatible with smart microsystems and a wide range of capacitive transducers. The interface chip is highly programmable, can communicate with an external microcontroller using a nine-line sensor bus standard, contains a switched-capacitor readout circuit, supports sensor self-test, and includes a temperature sensor. The circuit can ...

Differential Wide Temperature Range CMOS Interface Circuit for Capacitive MEMS Pressure Sensors

We describe a Complementary Metal-Oxide Semiconductor (CMOS) differential interface circuit for capacitive Micro-Electro-Mechanical Systems (MEMS) pressure sensors that is functional over a wide temperature range between -55 °C and 225 °C. The circuit is implemented using IBM 0.13 μm CMOS technology with 2.5 V power supply. A constant-gm biasing technique is used to mitigate performance degrada...

Low Value Capacitance Measurement System with Adjustable Lead Capacitance Compensation

The present paper describes the development of a low cost, highly accurate low capacitance measurement system that can be used over a range of 0 – 400 pF with a resolution of 1 pF. The range of capacitance may be easily altered by a simple resistance or capacitance variation of the measurement circuit. This capacitance measurement system uses quad two-input NAND Schmitt trigger circuit CD4093B ...