Resources Contact Us Home
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
Asynchronous line interface rate adaptation to the physical layer with synchronous lines at the connection layer
Control of an electric machine
Cardiopulmonary resuscitation monitoring apparatus
Hand sign
Method for switching channels in a wireless communication network
Computer system for routing package deliveries
Blend polymer gas separation membrane
  Randomly Featured Patents
Method to disable trunk lockout protection for smart entry
Stacking connector and electronic device
Aryl--pyrrolo--thiazepin--diones and aryl--piperidino--thiazepin--diones
Landfill garbage management process
Dispenser for sheet material
Method of performing operating settings in heart rate measurement arrangement, and heart rate measurement arrangement
Battery monitor with software trim
Combined bathtub and shower stall
Storage reel with peripheral core relief
Method of preparation and composition of a water soluble extract of the bioactive component of the plant species Uncaria for enhancing immune, anti-inflammatory, anti-tumor and DNA repair proc