University of Electronic Science and Technology of China

University of Glasgow

Hadi Heidari

Franco Maloberti

Yuanjun Cen

Hua Fan

Dagang Li

Daqian Hu

Quanyuan Feng

Huaying Su

Jingxuan Yang

Jingtao Li

Siming Zuo

A readout integrated circuit (IC) architecture for a tunnelling magnetoresistive (TMR) sensor which uses common mode feedback to achieve a performance level suitable for accurate detection of biomagnetic signals. The architecture uses a three-operational amplifier configuration with chopper stabilization. The architecture may form part of a fully integrated biomagnetic sensor electronics package that includes an array of TMR sensors together with modules for signal amplification and conditioning, data conversion and communication.

Sensor readout circuit for a biomagnetism measurement system

A method for improving a spurious free dynamic range and a signal-to-noise-and-distortion ratio of a capacitor-resistor combined successive approximation register analog-to-digital converter by capacitor re-configuration, the method including: 1) arranging 128 unit capacitors in a positive array and a negative array, respectively, dividing unit capacitors of symmetrical positions of the positive array and the negative array into groups to yield a total of 128 groups of capacitors; 2) acquiring 128 digital codes corresponding to 128 groups of capacitors; 3) sorting the 128 groups of capacitors from maximum to minimum according to the 128 digital codes obtained in 2), and recording the 128 groups of capacitors after sorting as C-C; and 4) selecting 64 groups of capacitors from Cto C, and reconfiguring the 64 groups of capacitors in capacitor arrays of the capacitor-resistor analog-to-digital converter.

Method for improving spurious free dynamic range (SFDR) and signal-to-noise-and-distortion ratio (SNDR) of capacitor-resistor combined successive approximation register (SAR) analog-to-digital converter (ADC) by capacitor re-configuration

A method of arranging a capacitor array of a successive approximation register analog-to-digital converter in a successive approximation process, the method including: splitting a binary capacitor array into unit capacitors, then sorting, grouping, and rotating the original binary capacitive array involved in successive approximation conversion.

Method of arranging capacitor array of successive approximation register analog-to-digital converter

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Glasgow, United Kingdom

Hadi Heidari