BIASING CIRCUIT FOR A MEMS ACOUSTIC TRANSDUCER WITH REDUCED START-UP TIME
Described herein is a MEMS acoustic transducer device (42) having: a capacitive microelectromechanical sensing structure (1) ; and a biasing circuit (20), including a voltage-boosting circuit (9) that supplies a boosted voltage (V CP ) on an output terminal (9a), and an insulating circuit element (1...
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| creator | NICOLLINI, GERMANO DANIONI, ALBERTO BARBIERI, FEDERICA MARINO, EDOARDO PERNICI, SERGIO BARBIERI, ANDREA |
| description | Described herein is a MEMS acoustic transducer device (42) having: a capacitive microelectromechanical sensing structure (1) ; and a biasing circuit (20), including a voltage-boosting circuit (9) that supplies a boosted voltage (V CP ) on an output terminal (9a), and an insulating circuit element (10), defining a high impedance, set between the output terminal (9a) and a terminal of the sensing structure (1), which defines a first high-impedance node (N 1 ) associated to the insulating circuit element (10). The biasing circuit (20) has: a pre-charge stage (24) that generates at least one first pre-charge voltage (V pre1 ) on a first output (Out 1 ) thereof, as a function of, and distinct from, the boosted voltage (V CP ); and at least one first switch element (SW 1 ), set between the first output (Out 1 ) and the first high-impedance node (N 1 ). The first switch element (SW 1 ) is operable for selectively connecting the first high-impedance node (N 1 ) to the first output (Out 1 ), during a phase of start-up of the biasing circuit (20), for biasing the first high-impedance node to the first pre-charge voltage. |
| format | Patent |
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The biasing circuit (20) has: a pre-charge stage (24) that generates at least one first pre-charge voltage (V pre1 ) on a first output (Out 1 ) thereof, as a function of, and distinct from, the boosted voltage (V CP ); and at least one first switch element (SW 1 ), set between the first output (Out 1 ) and the first high-impedance node (N 1 ). The first switch element (SW 1 ) is operable for selectively connecting the first high-impedance node (N 1 ) to the first output (Out 1 ), during a phase of start-up of the biasing circuit (20), for biasing the first high-impedance node to the first pre-charge voltage.</description><language>eng ; fre ; ger</language><subject>DEAF-AID SETS ; ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS ; PUBLIC ADDRESS SYSTEMS</subject><creationdate>2016</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20160127&DB=EPODOC&CC=EP&NR=2978241A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20160127&DB=EPODOC&CC=EP&NR=2978241A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NICOLLINI, GERMANO</creatorcontrib><creatorcontrib>DANIONI, ALBERTO</creatorcontrib><creatorcontrib>BARBIERI, FEDERICA</creatorcontrib><creatorcontrib>MARINO, EDOARDO</creatorcontrib><creatorcontrib>PERNICI, SERGIO</creatorcontrib><creatorcontrib>BARBIERI, ANDREA</creatorcontrib><title>BIASING CIRCUIT FOR A MEMS ACOUSTIC TRANSDUCER WITH REDUCED START-UP TIME</title><description>Described herein is a MEMS acoustic transducer device (42) having: a capacitive microelectromechanical sensing structure (1) ; and a biasing circuit (20), including a voltage-boosting circuit (9) that supplies a boosted voltage (V CP ) on an output terminal (9a), and an insulating circuit element (10), defining a high impedance, set between the output terminal (9a) and a terminal of the sensing structure (1), which defines a first high-impedance node (N 1 ) associated to the insulating circuit element (10). The biasing circuit (20) has: a pre-charge stage (24) that generates at least one first pre-charge voltage (V pre1 ) on a first output (Out 1 ) thereof, as a function of, and distinct from, the boosted voltage (V CP ); and at least one first switch element (SW 1 ), set between the first output (Out 1 ) and the first high-impedance node (N 1 ). The first switch element (SW 1 ) is operable for selectively connecting the first high-impedance node (N 1 ) to the first output (Out 1 ), during a phase of start-up of the biasing circuit (20), for biasing the first high-impedance node to the first pre-charge voltage.</description><subject>DEAF-AID SETS</subject><subject>ELECTRIC COMMUNICATION TECHNIQUE</subject><subject>ELECTRICITY</subject><subject>LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS</subject><subject>PUBLIC ADDRESS SYSTEMS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2016</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZPB08nQM9vRzV3D2DHIO9QxRcPMPUnBU8HX1DVZwdPYPDQ7xdFYICXL0C3YJdXYNUgj3DPFQCHIFcVwUgkMcg0J0QwMUQjx9XXkYWNMSc4pTeaE0N4OCm2uIs4duakF-fGpxQWJyal5qSbxrgJGluYWRiaGjoTERSgDHdCyh</recordid><startdate>20160127</startdate><enddate>20160127</enddate><creator>NICOLLINI, GERMANO</creator><creator>DANIONI, ALBERTO</creator><creator>BARBIERI, FEDERICA</creator><creator>MARINO, EDOARDO</creator><creator>PERNICI, SERGIO</creator><creator>BARBIERI, ANDREA</creator><scope>EVB</scope></search><sort><creationdate>20160127</creationdate><title>BIASING CIRCUIT FOR A MEMS ACOUSTIC TRANSDUCER WITH REDUCED START-UP TIME</title><author>NICOLLINI, GERMANO ; DANIONI, ALBERTO ; BARBIERI, FEDERICA ; MARINO, EDOARDO ; PERNICI, SERGIO ; BARBIERI, ANDREA</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP2978241A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2016</creationdate><topic>DEAF-AID SETS</topic><topic>ELECTRIC COMMUNICATION TECHNIQUE</topic><topic>ELECTRICITY</topic><topic>LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS</topic><topic>PUBLIC ADDRESS SYSTEMS</topic><toplevel>online_resources</toplevel><creatorcontrib>NICOLLINI, GERMANO</creatorcontrib><creatorcontrib>DANIONI, ALBERTO</creatorcontrib><creatorcontrib>BARBIERI, FEDERICA</creatorcontrib><creatorcontrib>MARINO, EDOARDO</creatorcontrib><creatorcontrib>PERNICI, SERGIO</creatorcontrib><creatorcontrib>BARBIERI, ANDREA</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>NICOLLINI, GERMANO</au><au>DANIONI, ALBERTO</au><au>BARBIERI, FEDERICA</au><au>MARINO, EDOARDO</au><au>PERNICI, SERGIO</au><au>BARBIERI, ANDREA</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>BIASING CIRCUIT FOR A MEMS ACOUSTIC TRANSDUCER WITH REDUCED START-UP TIME</title><date>2016-01-27</date><risdate>2016</risdate><abstract>Described herein is a MEMS acoustic transducer device (42) having: a capacitive microelectromechanical sensing structure (1) ; and a biasing circuit (20), including a voltage-boosting circuit (9) that supplies a boosted voltage (V CP ) on an output terminal (9a), and an insulating circuit element (10), defining a high impedance, set between the output terminal (9a) and a terminal of the sensing structure (1), which defines a first high-impedance node (N 1 ) associated to the insulating circuit element (10). The biasing circuit (20) has: a pre-charge stage (24) that generates at least one first pre-charge voltage (V pre1 ) on a first output (Out 1 ) thereof, as a function of, and distinct from, the boosted voltage (V CP ); and at least one first switch element (SW 1 ), set between the first output (Out 1 ) and the first high-impedance node (N 1 ). The first switch element (SW 1 ) is operable for selectively connecting the first high-impedance node (N 1 ) to the first output (Out 1 ), during a phase of start-up of the biasing circuit (20), for biasing the first high-impedance node to the first pre-charge voltage.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS |
| title | BIASING CIRCUIT FOR A MEMS ACOUSTIC TRANSDUCER WITH REDUCED START-UP TIME |
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