US Patent 7535388 Calculation of ADC and DAC errors in LSI chip

Patent 7535388 was granted and assigned to Fujitsu on May, 2009 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Fujitsu

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7535388

Date of Patent

May 19, 2009

Patent Application Number

11892356

Date Filed

August 22, 2007

Patent Primary Examiner

‌

Brian Young

Patent abstract

A semiconductor integrated circuit includes a bus, a CPU connected to the bus, a DAC having a digital input thereof connected to the bus, an ADC having a digital output thereof connected to the bus, a voltage generating circuit, a first switch configured to cause an electrical coupling between an analog input of the ADC and the voltage generating circuit to switch between a conductive state and a nonconductive state, and a second switch configured to cause an electrical coupling between an analog output of the DAC and the analog input of the ADC to switch between a conductive state and a nonconductive state.