0% Complete
صفحه اصلی
/
بیست و نهمین کنفرانس مهندسی برق ایران
A Digital Method for Offset Cancellation of Fully Dynamic Latched Comparators
نویسندگان :
Alireza Ahrar
1
Mohammad Yavari
2
1- دانشگاه صنعتی امیرکبیر
2- دانشگاه صنعتی امیرکبیر
کلمات کلیدی :
offset cancellation, weight balance control, body bias control, thermometer code, retiming method.
چکیده :
In this paper, we have proposed a two-phase high precision digital offset cancellation method for dynamic latched comparators. The proposed method's first phase is weight balance control, and the second phase is named body bias control. The first phase reduces the offset of the comparator up to a few millivolts, and the second phase alleviates this amount to some decades of microvolts. The main reason for using the second phase is the weight balance calibration's sensitivity to the input pairs sizes and kickback noise. A retiming method is used to control the thermometer code DAC switching activities and minimize the glitches. The thermometer DAC structure is used for the body bias control method instead of R-2R DAC to ensure the body bias controller's monotonic signal. Circuitry simulations are done using Cadence with 180 nm standard CMOS technology under 1 V power supply. A strong-arm dynamic latched comparator is used for our calibration study. Before calibration, the input offset has three times of standard deviation equal to 19.56 millivolts. The weight balance control offset method has reduced this amount to almost 2.8 millivolts. Finally, the fully-calibrated comparator results have an offset equal to 363 microvolts. The calibration clock is set to be 33.3 MHz. Our offset cancellation prepares 53.9 times improvement in the input offset of the comparator using 389 microwatts.
لیست مقالات
لیست مقالات بایگانی شده
Defects Dynamics in Multilayer h-BN Resistive Switching Memories: A Molecular Dynamics Investigation
Omid Babaeinejad - Maryam Keshavarz Afshar - Ebrahim Nadimi
A novel wideband low profile Fabry-Perot cavity antenna using single-layer partially reflective surface
Mahtab Ghanbari - Bijan Abbasi arand - Maryam Hesari shermeh
A Technical-Managerial Framework for Determining Periodic Performance Indices and Operating Ranges of Power Grid Frequency
Hamed Delkhosh - Hossein Seifi - Sajjad Gholamnejad - Morteza Yousefian
A Robust Video Steganography using 3D-CNN and Maximum Mean Discrepancy Cost Function
Ali Ghofrani - Rahil Mahdian Toroghi - Hassan Zareian
Reinforcement Learning based Joint Resource Allocation and User Fairness Optimization in mmWave-NOMA HetNets
Sima Sobhi-Givi - Mahdi Nouri - Mahrokh G. Shayesteh - Hashem Kalbkhani - Zhiguo Ding
An Enhanced Chaotic System Based Color Image Encryption using DNA Encoding
Mobin Vaziri - Mohammad Mehdi Rahimifar - Hadi Jahanirad
Forecasting Tehran Stock Exchange Trend with Time Series Analysis, Fundamental Data, and Sentiment Analysis in News
Mahdi Shamisavi - Amir Jahanshahi
Breast tumor detection using graphene-based terahertz patch antenna
Zahra Yasaghi - Ayaz Ghorbani - Gholamreza Moradi
Depth Estimation in Monocular Images of Inside the Sewer Pipes for Navigation of Inspection Robots
Zeinab Maroufi - Alireza Hadi Hosseinabadi - Reza Askari moghadam
Service Restoration in Distribution Networks Based on a Two-stage Power Flow Model
Saman Armand - Jalal Heidary - Eli Shirazi
بیشتر
ثمین همایش، سامانه مدیریت کنفرانس ها و جشنواره ها - نگارش 42.5.3