bullet Sensors & Transducers Journal

    (ISSN 1726-5479)


2008 e-Impact Factor

25 Top Downloaded Articles

Best Selling Articles 2012

Journal Subscription 2014

Editorial Calendar

Submit an Article

Editorial Board

Current Issue

S&T journal's cover

Sensors & Transducers Journal 2011

Sensors & Transducers Journal 2010

Sensors & Transducers Journal 2009

Sensors & Transducers Journal 2008

Sensors & Transducers Journal 2007

2000-2002 S&T e-Digest Contents

2003 S&T e-Digest Contents

2004 S&T e-Digest Contents

2005 S&T e-Digest Contents

2006 S&T e-Digest Contents


Best Articles 2011




Vol. 161, Issue 12, December 2013, pp. 175-179




Reduce Capacitor Nonlinearity and Mismatch for Charge Integral Type Ramp Generator
* Nan Lyn, Ning Mei Yu

1 Xi'an University of Technology, Shaanxi Xi'an Jin Hua south road No. 5, 710048, China

* Tel.: 13720581749

* E-mail: sheng_xing@yeah.net


Received: 28 September 2013   /Accepted: 22 November 2013   /Published: 30 December 2013

Digital Sensors and Sensor Sysstems


Abstract: This paper presents a simple and effective way for reducing capacitor nonlinearity and capacitor mismatch in charge integral type ramp generator without increasing the chip area. On the basis of detailed analysis integral type ramp generator, deduced the relationship between input voltage and capacitor mismatch in the integral type ramp generator. The proposed ramp generator architecture is mainly applied to single slope ADC, which is used for CMOS image sensor. At the power supply voltage of 1.8 V, 10-bit resolution and 10 MHz sampling frequency, through Monte-Carlo simulation, we compare the influence of different input voltages on Vout voltage, DNL and INL of ramp generator. The result indicates that reduces the input voltage can effectively improve linearity and capacitor mismatch of the ramp generator.


Keywords: Charge integral type ramp generator, Capacitor mismatch, Single slope ADC, Monte Carlo simulation, CMOS image sensor.


Acrobat reader logo Click <here> or title of paper to download the full pages article in pdf format



Download <here> the Library Journal Recommendation Form



Read more about Wireless Sensor Networks






1999 - 2018 Copyright , International Frequency Sensor Association (IFSA). All Rights Reserved.

Home - News - Links - Archives - Tools - Voltage-to-Frequency Converters - Standardization - Patents - Marketplace - Projects - Wish List - e-Shop - Sensor Jobs - Membership - Videos - Publishing - Site Map - Subscribe - Search

 Members Area -Sensors Portal -Training Courses - S&T Digest - For advertisers - Bookstore - Forums - Polls - Submit Press Release - Submit White Paper - Testimonies - Twitter - Facebook - LinkedIn