Integrated circuit having a built-in noise filter
Patent 5220298 Issued on June 15, 1993. Estimated Expiration Date: 
July 23, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 23, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesVariable impedance circuit Patent #: 5012201 InventorApplicationNo. 734733 filed on 07/23/1991US Classes:333/185, Having significant physical structure257/E23.114, Protection against radiation, e.g., light, electromagnetic waves (EPO)333/182, Feedthrough type361/728, Module361/820For semiconductor deviceExaminersPrimary: Pascal, RobertAssistant: Neyzari, Ali Attorney, Agent or FirmForeign Patent References
International ClassH03H 007/00Foreign Application Priority Data1990-07-24 JPAbstractA semiconductor integrated circuit comprising a semiconductor chip provided within a package, inner leads connected to the semiconductor chip, and a high-frequency noise filter connected to the inner leads. The semiconductor chip includes a high-frequency circuit. Thereby, this semiconductor integrated circuit prevents an around circuit from being damaged by high-frequency noise generated from the high-frequency circuit, without installing the noise filter around the semiconductor integrated circuit.Field of SearchFrequency domain filters utilizing only lumped parametersIncluding recurrent sections Simulating specific type of reactance Equalizers TRANSMISSION LINE INDUCTIVE OR RADIATION INTERFERENCE REDUCTION SYSTEMS Smoothing type (e.g., direct current power supply filters or decoupling filters) Having significant physical structure HAVING OR PROVIDING INDUCTIVE OR CAPACITIVE SHIELD Conductive shielding material individually surrounding or interposed between mutually insulated contacts | |
