A Lowpower Columnparallel Adc With Shared Otas For Cmos Image Sensor In 40Nm Process

• doi: 10.1109/ICISPC57208.2022.00029
• title: A Low-power Column-parallel ∑Δ ADC with Shared OTAs for CMOS Image Sensor in 40-nm Process
• publisher: IEEE
• isbn: 978-1-6654-5481-0
• issn: 2831-3976
• rank: 817
• access_type: LOCKED
• content_type: Conferences
• abstract: This paper presents a low-power column-parallel ∑Δ analog-to-digital converter (ADC) with shared operational transconductance amplifier (OTA) for CMOS image sensors (CISs). Through the proposed time division multiplexing of OTAs, the power consumption of the modulator achieves a reduction of about 40%. Besides, the proposed structure alleviates the layout requirement of OTAs, which becomes appropriate to implement a high-resolution low-power image sensor in advanced CMOS technology nodes. Since the coupled noise introduced by the proposed column-shared scheme is suppressed to a lower level than the inherent crosstalk of adjacent pixels, the proposed structure only contributes an ignorable inter-column coupled noise in ADCs. The prototype sensor is implemented in a 40-nm standard CMOS technology with 256 × 256 pixel array and 256 proposed column-parallel ∑Δ ADCs. Each ∑Δ ADC occupies a core area of 4.5 μm × 310 μm, while consumes a power of 58.8 μW.
• article_number: 10040511
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10040511
• html_url: https://ieeexplore.ieee.org/document/10040511/
• abstract_url: https://ieeexplore.ieee.org/document/10040511/
• publication_title: 2022 6th International Conference on Imaging, Signal Processing and Communications (ICISPC)
• conference_location: Kumamoto, Japan
• conference_dates: 22-24 July 2022
• publication_number: 10040486
• is_number: 10040493
• publication_year: 2022
• publication_date: 22-24 July 2022
• start_page: 116
• end_page: 119
• citing_paper_count: 1
• citing_patent_count: 0
• download_count: 553
• insert_date: 20230210
• index_terms:
  • ieee_terms:
    • Power demand
    • Prototypes
    • Modulation
    • CMOS image sensors
    • CMOS technology
    • Time division multiplexing
    • Transconductance
  • author_terms:
    • CMOS image sensor
    • ∑Δ ADC
    • column-parallel readout circuit
    • shared OTA
    • low power
  • dynamic_index_terms:
    • Image Sensor
    • Operational Transconductance Amplifier
    • 40-nm Process
    • Power Consumption
    • Analog-to-digital Converter
    • Operational Amplifier
    • Sensor Prototype
    • Internet Of Things
    • Capacitance Values
    • Inverter
    • Sine Wave
    • Supply Voltage
    • Parasitic Capacitance
    • Total Power Consumption
    • Adjacent Channels
    • Chip Area
    • Differential Amplifier
    • Readout Circuit
    • Temporal Noise
    • Open-loop Gain
• isbn_formats:
  • format: Print on Demand(PoD) ISBN, value: 978-1-6654-5481-0, isbnType: New-2005
  • format: Electronic ISBN, value: 978-1-6654-5480-3, isbnType: New-2005
• authors:
  • Author Name: Wenbo Yao
    Affiliation: Marketing Service Center, State Grid Chongqing Electric Power Company, Chongqing, China
    Author URL: https://ieeexplore.ieee.org/author/37089720174
    ID: 37089720174
    Order: 1
    Author Affiliations:
    • Marketing Service Center, State Grid Chongqing Electric Power Company, Chongqing, China
  • Author Name: Xiaotian Li
    Affiliation: State Grid Chongqing Electric Power Research Institute, Chongqing, China
    Author URL: https://ieeexplore.ieee.org/author/37089721870
    ID: 37089721870
    Order: 2
    Author Affiliations:
    • State Grid Chongqing Electric Power Research Institute, Chongqing, China
  • Author Name: Linghui Zeng
    Affiliation: School of Microelectronics and Communication Engineering, Chongqing University (CQU), Chongqing, China
    Author URL: https://ieeexplore.ieee.org/author/37089722001
    ID: 37089722001
    Order: 3
    Author Affiliations:
    • School of Microelectronics and Communication Engineering, Chongqing University (CQU), Chongqing, China
  • Author Name: Tongbei Yang
    Affiliation: School of Microelectronics and Communication Engineering, Chongqing University (CQU), Chongqing, China
    Author URL: https://ieeexplore.ieee.org/author/37088357832
    ID: 37088357832
    Order: 4
    Author Affiliations:
    • School of Microelectronics and Communication Engineering, Chongqing University (CQU), Chongqing, China
  • Author Name: Zhongjie Wang
    Affiliation: School of Microelectronics and Communication Engineering, Chongqing University (CQU), Chongqing, China
    Author URL: https://ieeexplore.ieee.org/author/37086404023
    ID: 37086404023
    Order: 5
    Author Affiliations:
    • School of Microelectronics and Communication Engineering, Chongqing University (CQU), Chongqing, China
  • Author Name: Fang Tang
    Affiliation: School of Microelectronics and Communication Engineering, Chongqing University (CQU), Chongqing, China
    Author URL: https://ieeexplore.ieee.org/author/37393880400
    ID: 37393880400
    Order: 6
    Author Affiliations:
    • School of Microelectronics and Communication Engineering, Chongqing University (CQU), Chongqing, China

Image Sensor

• sensor_type: CMOS
• resolution: 256x256 pixels
• dynamic_range: 79.9 dB
• pixel_size: 4.5 μm × 310 μm
• dark_current: Not specified

Optical Data

• focal_length: Not specified
• aperture: Not specified
• field_of_view: Not specified
• distortion: Not specified

Performance Metrics

• signal_to_noise_ratio: 74.5 dB
• power_consumption: 58.8 μW
• noise: 0.55 LSB rms

Applications & Benefits

• cell_imaging: Low-power operation suitable for various applications, including medical devices and automotive systems.
• benefits: High-resolution imaging with reduced power consumption and improved performance through shared OTAs in column-parallel ADCs.

Supporting Organizations

• supported_by: State Grid Chongqing Electric Power Company, State Grid Chongqing Electric Power Research Institute, Chongqing University

Manuscript Details

• publication_date: 22-24 July 2022

Relevancy Score

• score: 9
• missing_fields:
  • fill_factor
  • quantum_efficiency
  • readout_speed
  • temporal_noise
  • fixed-pattern_noise
  • microlenses
  • on-chip_colour_filters
  • global_or_rolling_shutters
  • backside_illumination

Processed JSON Filename

request_0d3a5549-13a5-4063-9e4f-ec1ba6a07346-a_lowpower_columnparallel__adc_with_shared_otas_for_cmos_image_sensor_in_40nm_process.json