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
System and method for managing content on a network interface
Formation of a masking layer on a dielectric region to facilitate formation of a capping layer on electrically conductive regions separated by the dielectric region
Method of transmitting and receiving a paging message in a mobile communication system
Early kill removal graphics processing system and method
Analysis device and an analysis apparatus using the analysis device
Victim port-based design for test area overhead reduction in multiport latch-based memories
Superconducting magnetizer
  Randomly Featured Patents
Self-calibrating water fluid control apparatus
Inking roller assembly for web printing
Vertical gallium-nitride based light emitting diode
Dental prosthesis system
Washer and method for purifying gases
Dithered center tracking system
Seatbelt system
Method of integrating software application programs using an attributive data model database
Pinhole ring
Barrier layer decreases nitrogen contamination of peripheral gate regions during tunnel oxide nitridation