Year: 2025
Type: article
Abstract: This paper presents a pixel-level readout circuit with hybrid multistage adaptive integration, targeting ground-surface anomaly detection applications requiring ultrawide dynamic range. The proposed circuit combines a capacitive transimpedance amplifier architecture with an analog-temporal hybrid readout approach. Dynamic range extension is achieved through correlated double sampling, switched integration capacitance, and pulse-counting-based digitization. This design effectively resolves the inherent trade-off in conventional circuits between weak-signal sensitivity (noise floor) and strong-signal saturation. Measurement results demonstrate an analog dynamic range (DR) extension of 124.7 dB and a temporal-domain DR extension of 14 dB, yielding a total DR exceeding 138.7 dB.
Source: AIP Advances
DOI: 10.1063/5.0301856
Authors: Dalin Kong, Shijun Chen, Xuelong OuYang, Hua Kuang, Shaolei Jin, Zhengxi Cheng, Honghui Yuan
Language: English
Topic: CCD and CMOS Imaging Sensors
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,350
Awards: G5497533710, G6561820490
OpenAlex ID: W4416929071