FUNCTIONAL DIGITAL-to-ANALOG CONVERTERS
AND THEIR ROLE IN THE DEVELOPMENT OF INSTRUMENT 

Sapel'nikov Valeriy Mikhaylovich, doctor of technical sciences, professor, sub-department of electrical engineering and electrical equipment, Ufa State Petroleum Technical University, sapelnikovvm@mail.ru

681.325

The article considers the use of digital-analog converters for converting signals in information measuring engineering, electrical engineering and instrument making, which is a powerful means of increasing the accuracy of the count. However, existing DAC can only perform a linear transformation of Uвых = kUоп. At the same time in different areas of technology needs with high accuracy to reproduce the nonlinear functional dependence. Shows the use of two types of approximation of piecewise linear and approximation of functions by series, to play a nonlinear functional dependencies and simulation using linear DAC. Examples of their use for different devices and is specified error obtained using these methods.

the digital-to-analog converters (DAC), digital-controlled of phase changes and calibrators of a phase.