SIGMA-DELTA MODULATION CONVERTER

摘要

Converter circuit to convert digital signals into analog signals. This circuit is based on a Sigma-Delta modulator to which an internal feedback loop (SD2, SR4) is added. This feedback loop allows to obtain an output signal equal to zero even when the input signal which is then equal to zero was preceeded by non-zero input signals. The operation of the converter is also improved owing to the presence of a DC blocking circuit (DCB).