公开(公告)号：US20180205388A1

公开(公告)日：2018-07-19

申请号：US15921337

申请日：2018-03-14

Applicant: Socionext Inc.

Inventor： Kenta Aruga ,  Yasuhiro Mizuno ,  Masato Yoshioka

IPC: H03M1/06

CPC classification number: H03M1/0678 ,  H03M1/069 ,  H03M1/38 ,  H03M1/46 ,  H03M1/462 ,  H03M1/68 ,  H03M1/765 ,  H03M1/804 ,  H04N5/4401 ,  H04N5/50

Abstract: An A/D converter includes a capacitor DAC, a resistor DAC, a first capacitive element, and a comparator. The capacitor DAC is configured to convert high-order M bits, where M and N are integers equal to or greater than 2, and the resistor DAC is configured to convert low-order N bits. The first capacitive element is provided between the capacitor DAC and the resistor DAC, and the comparator is configured to compare an input signal voltage with a voltage output from the capacitor DAC. The resistor DAC generates and outputs a voltage by adding or subtracting a wait based on redundant bits in addition to N-bit resolution.

公开(公告)号：US10164651B2

公开(公告)日：2018-12-25

申请号：US15921337

申请日：2018-03-14

Applicant: SOCIONEXT INC.

Inventor： Kenta Aruga ,  Yasuhiro Mizuno ,  Masato Yoshioka

IPC: H03M1/06 ,  H03M1/38 ,  H03M1/46 ,  H04N5/50

Abstract: An A/D converter includes a capacitor DAC, a resistor DAC, a first capacitive element, and a comparator. The capacitor DAC is configured to convert high-order M bits, where M and N are integers equal to or greater than 2, and the resistor DAC is configured to convert low-order N bits. The first capacitive element is provided between the capacitor DAC and the resistor DAC, and the comparator is configured to compare an input signal voltage with a voltage output from the capacitor DAC. The resistor DAC generates and outputs a voltage by adding or subtracting a wait based on redundant bits in addition to N-bit resolution.