公开(公告)号：US20240027263A1

公开(公告)日：2024-01-25

申请号：US18267062

申请日：2021-12-08

Applicant: ams International AG

Inventor： Ravi Kumar ADUSUMALLI ,  Rahul THOTTATHIL ,  Gowri Krishna Kanth AVALUR ,  Sudhakar SINGAMALA ,  Dinesh KURUGANTI ,  Vijay ELE

IPC: G01J1/44

CPC classification number: G01J1/44 ,  G01J2001/4247

Abstract: An optical device for characterizing flicker from an ambient light source is disclosed. The device comprises a radiation-sensitive device configured to vary a current in response to incident radiation, a second or higher-order modulator configured to output data corresponding to the current, and processing circuitry configured to provide a real-time characterization of flicker in the incident radiation based upon an analysis of changes in the data. Also disclosed is an associated method of characterizing flicker from an ambient light source.

公开(公告)号：US20220255536A1

公开(公告)日：2022-08-11

申请号：US17618439

申请日：2020-06-09

Applicant: AMS INTERNATIONAL AG

Inventor： Rahul THOTTATHIL ,  Ravi Kumar ADUSUMALLI ,  Parvathy S. J. ,  Veeresh Babu VULLIGADDALA

IPC: H03H19/00 ,  H03F3/45 ,  H03K3/012 ,  H03K3/013

Abstract: An apparatus includes a differential current-to-voltage conversion circuit that includes an input sampling stage circuit, a differential integration and DC signal cancellation stage circuit, and an amplification and accumulator stage circuit. An input common mode voltage of the differential current-to-voltage circuit is independent of an output common mode voltage of the differential current-to-voltage circuit.