APPARATUS AND METHOD OF USING SPREAD PULSE MODULATION TO INCREASE THE CONTROL RESOLUTION OF AN ELECTRONIC DEVICE

摘要

An apparatus and method are described to increase the control resolution of an electronic device. In one embodiment, the invention includes a spread pulse modulation module (300, 308, 310, 312) to generate a first set of bits (334, 336) based on a second set (300) of bits that is larger than the first set of bits. (334, 336) The spread pulse modulation module modulates (304) the least significant bit (LSB) (336) of the first set of bits (334 336) based on information including the LSB modulation period and the LSB modulation duty cycle. The spread pulse modulation module also modulates (304) the least significant bit (336) of the first set of bits (334, 336) so that the least significant bit (336) transitions at least twice from a high value to a low value during the modulatio period. This embodiment of the invention also includes a digital-to-analog conversion module (104) to generate an analog input signal to the electronic device based on the first set of bits.