Apparatus and method for the correction of the voltage of spacing difference in an analog-to-digital converter (-, 1984.

摘要

P describes a digital / analog converter - with redistribution of charges, which makes it possible to incorporate the correction of the offset voltage in order to carry out an exact reflection of the analog input signal in the digital output signal. In a device of the successive approximations, to the capacitors distributed, as well as a group of capacitors 41 of the system relative to the most significant bit that, in a group of capacitors 43 of the system relative to the least significant bit, are added on the other capacitors 42, 44 which are used in conjunction with the offset voltage. The value of the offset voltage is stored in a register and the register determines the various positions of switches s20 - s27, s31 - s34, s50 - s54, s61 - s64 which determine the value of the input voltage which is incorporated in the output voltage. & br / (see appended drawing in bopi) & br / & & br / / p