公开(公告)号：US12206435B2

公开(公告)日：2025-01-21

申请号：US18170228

申请日：2023-02-16

Applicant: Daegu Gyeongbuk Institute of Science and Technology

Inventor： Jung Hyup Lee ,  Se Hwan Lee

IPC: H03M3/00 ,  H03M1/06 ,  H03M1/12

Abstract: Disclosed is an input impedance boosting apparatus. More particularly, an input impedance boosting apparatus including an analog-to-digital converter; an input capacitor connected to an input terminal of the analog-to-digital converter and a ground line and including a first shielding metal formed thereunder; a feedback capacitor connected onto a positive feedback loop of the analog-to-digital converter and including a second shielding metal formed thereunder; and an impedance booster connected to both ends of the feedback capacitor and configured to boost an input impedance based on a first parasitic component formed between the input capacitor and the first shielding metal and a second parasitic component formed between the feedback capacitor and the second shielding metal is provided.

公开(公告)号：US20230261670A1

公开(公告)日：2023-08-17

申请号：US18170228

申请日：2023-02-16

Applicant: Daegu Gyeongbuk Institute of Science and Technology

Inventor： Jung Hyup LEE ,  Se Hwan Lee

IPC: H03M3/00

CPC classification number: H03M3/458

Abstract: Disclosed is an input impedance boosting apparatus. More particularly, an input impedance boosting apparatus including an analog-to-digital converter; an input capacitor connected to an input terminal of the analog-to-digital converter and a ground line and including a first shielding metal formed thereunder; a feedback capacitor connected onto a positive feedback loop of the analog-to-digital converter and including a second shielding metal formed thereunder; and an impedance booster connected to both ends of the feedback capacitor and configured to boost an input impedance based on a first parasitic component formed between the input capacitor and the first shielding metal and a second parasitic component formed between the feedback capacitor and the second shielding metal is provided.

公开(公告)号：US12294388B2

公开(公告)日：2025-05-06

申请号：US18168882

申请日：2023-02-14

Applicant: Daegu Gyeongbuk Institute of Science and Technology

Inventor： Jung Hyup Lee ,  Ji Woong Choi ,  Se Hwan Lee

IPC: H03M1/00 ,  H03M3/00

Abstract: Disclosed are a continuous-time delta-sigma analog-to-digital converter and an operation method thereof. More particularly, a continuous-time delta-sigma analog-to-digital converter, including: a linear integrator configured to generate a first output signal corresponding to a preset input voltage based on an operation of a linear Gm circuit that receives the preset input voltage; and a quantizer configured to generate a second output signal corresponding to the first output signal based on an operation of a body-driven VCO that receives the first output signal and to generate a digital output code corresponding to the second output signal based on an operation of a Frequency to Digital Converter (FDC) that receives the second output signal is disclosed.