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
System and method of producing construction specifications
Circuit topology for pulsed power energy harvesting
Method for solubilising, dispersing and stabilising of substances, products manufactured according to the method as well as the use thereof
Method and system for load balancing in networks
Gas insulator switchgear
Methods and apparatus for determining an identity of a user
Combined short-range and long-range radio communication
  Randomly Featured Patents
Field emission cold cathode and method of fabricating the same
Method for producing 4-hydroxy-3-nitrobiphenyl
Link system
Inner gear ring with variable tooth-number, the method of varying the tooth-number, and a variable transmission using the inner gear ring
Well apparatus
Pigments and photoconductive elements sensitive to infrared radiation
Acylurea derivatives
Dram structure with multiple memory cells sharing the same bit-line contact
Dynamically processing an index to create an ordered set of questions
Ultrasonic sensing