{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9654071","patent":{"patent_number":"US-9654071","title":"Preamplifier circuit for a microelectromechanical capacitive acoustic transducer","assignee":null,"inventors":[],"filing_date":"2016-03-31T00:00:00.000Z","publication_date":"2017-05-16T00:00:00.000Z","cpc_codes":["H04R","H04R","H04R","H04R"],"num_claims":20,"abstract":"Described herein is a preamplifier circuit for a capacitive acoustic transducer provided with a MEMS detection structure that generates a capacitive variation as a function of an acoustic signal to be detected, starting from a capacitance at rest; the preamplifier circuit is provided with an amplification stage that generates a differential output signal correlated to the capacitive variation. In particular, the amplification stage is an input stage of the preamplifier circuit and has a fully differential amplifier having a first differential input (INP) directly connected to the MEMS detection structure and a second differential input (INN) connected to a reference capacitive element, which has a value of capacitance equal to the capacitance at rest of the MEMS detection structure and fixed with respect to the acoustic signal to be detected; the fully differential amplifier amplifies the capacitive variation and generates the differential output signal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Preamplifier circuit for a microelectromechanical capacitive acoustic transducer","description":"Described herein is a preamplifier circuit for a capacitive acoustic transducer provided with a MEMS detection structure that generates a capacitive variation as a function of an acoustic signal to be","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9654071","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9654071","citation_suggestion":"Patentable. \"Preamplifier circuit for a microelectromechanical capacitive acoustic transducer\" (US-9654071). https://patentable.app/patents/US-9654071","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9654071","json":"https://patentable.app/api/llm-context/US-9654071","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:47:42.570Z"}