The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 2019
Filed:
Sep. 27, 2018
Ablic Inc., Chiba-shi, Chiba, JP;
Eiki Imaizumi, Chiba, JP;
ABLIC INC., Chiba, JP;
Abstract
A ΔΣ modulator includes a first integrator which has first and second capacitors and integrates an analog input signal and a feedback analog signal, a second integrator which has third and fourth capacitors and integrates an output signal of the first integrator, a differential amplifier which has input and output terminals switched and connected via a switch circuit to either the first and second capacitors or the third and fourth capacitors, a chopper switch which switches the polarity of the input terminal and the polarity of the output terminal, to both of which the first capacitor and the second capacitor are connected, a quantizer which compares an added signal and a reference signal to output a digital value, and a digital/analog converter which outputs the feedback analog signal corresponding to the digital value.