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
Heat retaining device
Editing device and editing method
Mirac proteins
Fast and compact circuit for bus inversion
Shoe bag
Automatic image-content based adjustment of printer printing procedures
  Randomly Featured Patents
Method for manufacturing a die storage tray having machined grooves and vacuum channels
Recovering a persistent storage unit in a wagering game system
Line weight or cleat
Organotin-containing composition for the stabilization of polymers of vinyl chloride
Tire pressure maintenance unit
Pathogen reduction using chloramines
Power supply voltage control circuit
Gas turbine engine systems involving fairings with locating data
Wig-like cool cap and method for manufacturing
Diagnosis of osteoarthritis by determination of asporin RNA levels