Resources Contact Us Home
Method and apparatus for trimming high-resolution digital-to-analog converter

Image Number 8 for United States Patent #6664909.

A method and apparatus for trimming a high-resolution digital-to-analog converter (DAC) utilizes floating-gate synapse transistors to trim the current sources in the DAC by providing a trimmable current source. Fowler-Nordheim electron tunneling and hot electron injection are the mechanisms used to vary the amount of charge on the floating gate. Since floating gate devices store charge essentially indefinitely, no continuous trimming mechanism is required, although one could be implemented if desired. By trimming the current sources with high accuracy, a DAC can be built with a much higher resolution and with smaller size than that provided by intrinsic device matching.

  Recently Added Patents
Controller for soldering iron
Image processing apparatus, image printing apparatus and printing data generation method
Controller with screen
Display panel and gate driving circuit and driving method for gate driving circuit
Cooling structure and cooling method for control rod drive mechanism and nuclear reactor
Process for production of nickel oxide-stabilized zirconia composite oxide
Methods and apparatus for intelligent selection of goods and services in mobile commerce
  Randomly Featured Patents
Bulletin board accessories and accessory attaching mechanism
Modular assembly and method for a refrigerator
Putty paddle
Testing device for printed circuit boards
Exhaust gas recirculation device of internal combustion engine, and control method for the device
Automated image annotation
Apparatus and method for managed pressure drilling
Urokinase receptor ligands
Location-based feature enablement for mobile terminals
Apparatus and method for injecting bone cement