Sigma-Delta Voltage to Frequency Converter With Phase Modulation Possibility

Authors : Milan STORK

Pages : 61-78

View : 11 | Download : 8

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Voltage to frequency converter insert ignore into journalissuearticles values(VFC); is an oscillator whose frequency is linearly proportional to control voltage. There are two common VFC architectures: the current steering multivibrator and the charge-balance VFC. For higher linearity, the charge-balancing method is preferred. The charge balanced VFC may be made in asynchronous or synchronous insert ignore into journalissuearticles values(clocked); forms. The synchronous charge balanced VFC or `sigma delta` insert ignore into journalissuearticles values(S-D); VFC is used when output pulses are synchronized to a clock. The charge balance VFC is more complex, more demanding in its supply voltage and current requirements, and more accurate. It is capable of 16 to18 bit linearity. In this paper, the New SVFC insert ignore into journalissuearticles values(NSVFC); is described. This NSVFC works similarly as conventional SVFC but it has a pure tone on output insert ignore into journalissuearticles values(for constant input voltage);. Therefore, it is possible to measure the period of NSVFC output insert ignore into journalissuearticles values(this does not work for SVFC);.
Keywords : Turk J Elec Eng Comp Sci, 13, 2005, 61 78 Turk J Elec Eng Comp Sci, vol 13, iss 1