Patent ID: 7230556
Filing Date: 2007-06-12
Classification: H03M

Abstract:
1. A method for generating an analog signal x(t) based on samples x[k] representing said analog signal, said method comprising: feeding said samples x[k] into a delta-sigma modulator, said delta-sigma modulator outputting a sequence of bits q[k]; feeding the sequence of bits q[k] into a chain of delay elements; feeding output signals of the delay elements to a lookup table storing combinations of arguments and values of a non-linear time-discrete function; using the lookup table to determine a value of the non-linear time-discrete function in response to the output signals of the delay elements; and providing the value as feedback to a delta element of the delta-sigma modulator, wherein said non-linear time-discrete function represents a model for non-idealities of at least one digital driver at the output of said delta-sigma modulator.