A 3.9 ps Time-Interval RMS Precision Time-to-Digital Converter Using a Dual-Sampling Method in an UltraScale FPGA

2016 ◽  
Vol 63 (5) ◽  
pp. 2617-2621 ◽  
Author(s):  
Yonggang Wang ◽  
Chong Liu
Keyword(s):  
Sampling Method ◽  
Time Interval ◽  
Digital Converter ◽  
Time To Digital Converter ◽  
Precision Time

A Low-Power High-Linear Time-to-Digital Converter for Measuring R-R Intervals in ECG Signal Optimized by Neural Network and TLBO Algorithm

2018 ◽  
Vol 28 (02) ◽  
pp. 1950021
Author(s):  
B. Ghanavati ◽  
E. Abiri ◽  
M. R. Salehi ◽  
N. Azhdari
Keyword(s):  
Neural Network ◽  
Dynamic Range ◽  
Linear Time ◽  
Optimization Method ◽  
Cmos Technology ◽  
Time Interval ◽  
Digital Converter ◽  
Two Stage ◽  
Time To Digital Converter ◽  
Tlbo Algorithm

In this paper, a two-stage time interpolation time-to-digital converter (TDC) is proposed to achieve adequate resolution and wide dynamic range for measuring R-R intervals in QRS detection. The architecture is based on a coarse counter and a couple of two-stage interpolator circuit in order to improve the conversion linearity. The proposed TDC is modeled with the neural network, while the teacher–learner-based optimization algorithm (TLBO) is used to optimize the integral nonlinearity (INL) of the proposed TDC. The proposed optimization method shows a characteristic close to the ideal output of the TDC behavior over a wide input range. Using the achieved results of the TLBO algorithm simulation results using CADENCE VIRTUOSO and standard 180[Formula: see text]nm CMOS technology shows 1.2[Formula: see text]s dynamic range, 100[Formula: see text]ns resolution, 0.19[Formula: see text]mW power consumption and area of 0.16[Formula: see text]mm2. The proposed circuit can find application in biomedical engineering systems and other fields where long and accurate time interval measurement is needed.

Multi-stage Pulse Shrinking Time-to-Digital Converter for Time Interval Measurements

2007 ◽  
Author(s):  
Yue Liu ◽  
Ulrich Vollenbruch ◽  
Yangjian Chen ◽  
Christian Wicpalek ◽  
Linus Maurer ◽  
...  
Keyword(s):  
Time Interval ◽  
Digital Converter ◽  
Time To Digital Converter ◽  
Multi Stage

Multi-stage pulse shrinking time-to-digital converter for time interval measurements

2007 ◽  
Author(s):  
Yue Liu ◽  
Ulrich Vollenbruch ◽  
Yangjian Chen ◽  
Christian Wicpalek ◽  
Linus Maurer ◽  
...  
Keyword(s):  
Time Interval ◽  
Digital Converter ◽  
Time To Digital Converter ◽  
Multi Stage
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