Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Current-mode sigma-delta digital-to-analog converter










Image Number 9 for United States Patent #7956782.

In general, this disclosure is directed to a differential current-mode sigma-delta digital-to-analog converter (SD DAC) with improved accuracy and reduced offset and gain errors. In one example, the SD DAC may include a current source configured to provide a differential current. The SD DAC may further include a switching network configured to adjust a polarity of the differential current according to a bit within the bit-stream to produce a differential current signal. The SD DAC may further include a current-to-voltage converter configured to convert the differential current signal to a differential voltage signal. In additional examples, the differential current source may include one or more source degeneration resistances. In further examples, the current-to-voltage converter may include a fully-differential operational amplifier. A low pass filter may be included within the current-to-voltage converter and/or coupled to the output of the current-to-voltage converter.








 
 
  Recently Added Patents
Vacuum cleaner
Chair
Method, apparatus, and system for synchronizing contents
Method and apparatus for focusing electrical stimulation in the brain during electro-convulsive therapy
Discharge lamp lighting circuit
System and method for enhanced transaction payment
Electronic device and control method therein
  Randomly Featured Patents
Methods of providing man-made islands
Indoor/outdoor fireplace apparatus
Intraocular lens folding and insertion apparatus
Apparatus for forming microscopic recesses on a cylindrical bore surface and method of forming the microscopic recesses on the cylindrical bore surface by using the apparatus
Mobile gateway having decentralized control plane for anchoring subscriber sessions
Vehicle wheel assembly with insulation intermediate bead seats
Reference position determination method for industrial robot
Soluble laminates
Electric disc brake
Tool handle with locking assembly