Zeropole Modulation And Demodulation For Noise Reduction In Charge Amplifiers

• doi: 10.1109/CICC.2011.6055312
• title: Zero-pole modulation and demodulation for noise reduction in charge amplifiers
• publisher: IEEE
• isbn: 978-1-4577-0221-1
• issn: 0886-5930
• partnum: 11CH38858
• rank: 4031
• access_type: LOCKED
• content_type: Conferences
• abstract: A novel method of noise reduction, referred to as zero-pole modulation and demodulation, is proposed for charge amplifiers in imaging and sensor systems. In this method, the input signal is passed through a zero-pole system without being modified. However, the noise at the output of the charge amplifier is reduced by the demodulation. An experimental charge amplifier for applications in x-ray crystallography with zero-pole modulation-demodulation has been designed and integrated in a 0.18-μm CMOS technology. The circuit operates at a frequency of 10 kHz and has a conversion gain of 100 mV/fC. The amount of noise reduction achieved by the proposed method is 40%, which corresponds well to the theoretically expected noise reduction. The experimental charge amplifier exhibits an input-referred noise of 100 ENC.
• article_number: 6055312
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6055312
• html_url: https://ieeexplore.ieee.org/document/6055312/
• abstract_url: https://ieeexplore.ieee.org/document/6055312/
• publication_title: 2011 IEEE Custom Integrated Circuits Conference (CICC)
• conference_location: San Jose, CA, USA
• conference_dates: 19-21 Sept. 2011
• publication_number: 6045019
• is_number: 6055276
• publication_year: 2011
• publication_date: 19-21 Sept. 2011
• start_page: 1
• end_page: 4
• citing_paper_count: 1
• citing_patent_count: 0
• download_count: 533
• insert_date: 20111020
• index_terms:
  • ieee_terms:
    • Noise
    • Demodulation
    • Noise reduction
    • Detectors
    • CMOS integrated circuits
    • Poles and zeros
  • dynamic_index_terms:
    • Denoising
    • Noise Reduction
    • Charge Amplifier
    • Input Signal
    • CMOS Technology
    • Noise Reduction Method
    • Input-referred Noise
    • Impedance
    • Resistivity
    • Frequency Domain
    • Functional Modules
    • System Output
    • Peak Detection
    • Minimum Area
    • System Noise
    • Parasitic Capacitance
    • Pulse Shape
    • Modulation Technique
    • Voltage Amplifier
    • Moderate Noise
    • Basic Charge
    • Concept Of Modulation
• isbn_formats:
  • format: CD, value: 978-1-4577-0221-1, isbnType: New-2005
  • format: Print ISBN, value: 978-1-4577-0222-8, isbnType: New-2005
  • format: Electronic ISBN, value: 978-1-4577-0223-5, isbnType: New-2005
• authors:
  • Author Name: Nasrin Jaffari
    Affiliation: Stanford University, Stanford, CA, USA
    Author URL: https://ieeexplore.ieee.org/author/38016600100
    ID: 38016600100
    Order: 1
    Author Affiliations:
    • Stanford University, Stanford, CA, USA
  • Author Name: Katelijn Vleugels
    Affiliation: Stanford University, Stanford, CA, USA
    Author URL: https://ieeexplore.ieee.org/author/37697820300
    ID: 37697820300
    Order: 2
    Author Affiliations:
    • Stanford University, Stanford, CA, USA
  • Author Name: Bruce A. Wooley
    Affiliation: Stanford University, Stanford, CA, USA
    Author URL: https://ieeexplore.ieee.org/author/37275768700
    ID: 37275768700
    Order: 3
    Author Affiliations:
    • Stanford University, Stanford, CA, USA

Image Sensor

• sensor_type: CMOS
• resolution: Not specified
• dynamic_range: Not specified
• pixel_size: Not specified
• dark_current: Not specified

Optical Data

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

Performance Metrics

• power_consumption: 100µW
• noise: 100 ENC

Applications & Benefits

• cell_imaging: X-ray crystallography and other imaging systems.
• benefits: Noise reduction enabling higher spatial resolution.

Supporting Organizations

• supported_by: National Semiconductor, Molecular Biology Consortium

Manuscript Details

• publication_date: 19-21 Sept. 2011

Relevancy Score

• score: 8
• missing_fields:
  • resolution
  • dynamic_range
  • pixel_size
  • dark_current
  • focal_length
  • aperture
  • field_of_view
  • distortion
  • frame_rate
  • signal_to_noise_ratio
  • sensitivity
  • shutter_speed

Processed JSON Filename

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