ANALOG-DIGITAL CONVERTER AND A WIRELESS COMMUNICATION DEVICE HAVING A FEEDBACK CONTINUOUS-TIME DELTA-SIGMA MODULATOR HAVING A POWER MODE FOR REDUCING POWER CONSUMPTION

摘要

PURPOSE: An analog-digital converter and a wireless communication device having a feedback continuous-time delta-sigma modulator are provided to enable a wireless communication device to filter a baseband signal of a receiver without a filtering device between a down-converter and an analog-digital converter.;CONSTITUTION: A baseband signal of a current mode is applied to an input unit of an ADC(Analog to Digital Converter)(224) without a filtering device between a down-converter(228) and the ADC. The baseband signal is mixed with a feedback signal of the current mode from a DAC(Digital to Analog Converter). The signal is inputted to an integrator.;COPYRIGHT KIPO 2012