公开(公告)号：US20190109598A1

公开(公告)日：2019-04-11

申请号：US16193748

申请日：2018-11-16

申请人： TECH IDEA CO., LTD.

发明人： Akira MATSUZAWA ,  Masaya NOHARA

IPC分类号： H03M1/12 ,  H03M1/34

CPC分类号： H03M1/121 ,  H03L7/0812 ,  H03L7/0816 ,  H03M1/123 ,  H03M1/1295 ,  H03M1/34 ,  H03M1/56 ,  H04N5/37455 ,  H04N5/378

摘要： A time domain A/D converter group includes a plurality of individual A/D converters, each of the individual A/D converters is connected to a reference signal generation circuit to generate a first reference signal for sweeping in a full scale range and a second reference signal for repeating plurality of times to sweep in a limited voltage range, and each of the individual A/D converters includes a reference voltage selection circuit for switching the first reference signal or the second reference signal, a comparator for comparing an input signal with the first reference signal or the second reference signal, for generating a comparison output signal, an internal A/D converter for performing an A/D conversion using the comparison output signal from the comparator, and an accumulation adder-subtractor for outputting an average signal of A/D conversion values obtained from the A/D conversion when the second reference signal is selected.