Patent ID: 7015844
Filing Date: 2006-03-21
Classification: H03M,H04N

Abstract:
1. An analog-to-digital converter comprising: an operational amplifier for generating digital bits in an N-bit digital bit series in response to a first analog input signal; wherein said operational amplifier comprises: a first input line for receiving the first analog input signal, a second input line for receiving an analog feedback circuit signal, and an amplifier output line for outputting a digital amplifier output signal; a memory for receiving and storing a digital bit corresponding to said digital amplifier output signal; and a digital-to-analog converter for generating said analog feedback circuit signal in response to receiving a digital bit signal applied to said digital-to-analog converter comprising: a first capacitor and a second capacitor connected in parallel, a reference selector for receiving said digital bit signal from said memory, and a feedback output line coupled to said second input line for applying said analog feedback circuit signal to said second input line.