scholarly journals An Ultrafast Multibit/Stage Pipelined ADC Testing and Calibration Method

2020 ◽  
Vol 69 (3) ◽  
pp. 729-738 ◽  
Author(s):  
Tao Chen ◽  
Chulhyun Park ◽  
Shravan K. Chaganti ◽  
Jose Silva-Martinez ◽  
Randall L. Geiger ◽  
...  
Keyword(s):  
Calibration Method ◽  
Pipelined Adc ◽  
Adc Testing

New digital background calibration method for pipelined ADCs

2020 ◽  
Vol 39 (4) ◽  
pp. 871-884
Author(s):  
Ehsan Zia ◽  
Ebrahim Farshidi ◽  
Abdolnabi Kosarian
Keyword(s):  
Dynamic Range ◽  
Calibration Method ◽  
Experimental Result ◽  
Pipelined Adc ◽  
Background Calibration ◽  
Content Type ◽  
Digital Background Calibration ◽  
Pipelined Adcs ◽  
Newton Raphson ◽  
Raphson Algorithm

Purpose Pipelined analog-to-digital converters (ADCs) are widely used in electronic circuits. The purpose of this paper is to propose a new digital background calibration method to correct the capacitor mismatch, finite direct current (DC) gain and nonlinearity of residue amplifiers in pipelined ADCs. Design/methodology/approach The errors are corrected by defining new functions based on generalized Newton–Raphson algorithm. Although the functions have analytical solutions, an iterative procedure is used for calibration. To accelerate the calibration process, proper initialization for the errors is identified by using evaluation estimation block and solving inverse matrix. Findings Several behavioral simulations of a 12-bit 100MS/s pipelined ADC in MATLAB indicate that signal-to-(noise + distortion) ratio (SNDR) and spurious free dynamic range (SFDR) are improved from 30dB/33dB to 70dB/79dB after calibration. Calibration is achieved in approximately 2,000 clock cycles. Practical implications The digital part of the proposed method is implemented on field-programmable gate array to validate the performance of the pipelined ADC. The experimental result shows that the degradation of SNDR, SFDR, integral nonlinearity, differential nonlinearity and effective number of bits is negligible according to fixed-point operation vs floating-point in simulation results. Originality/value The novelty of this study is to use Newton–Raphson algorithm combined with appropriate initialization to reduce the number of divisions as well as calibration time, which is suitable in the recent nano-meter complementary metal oxide semiconductor technologies.

VLSI DESIGN OF PIPELINED ADC WITH WIDE RANGE OPERATING TEMPERATURE FOR WAVE APPLICATIONS

2017 ◽  
Vol 6 (2) ◽  
pp. 13
Author(s):  
P LOKESH ◽  
U. SOMALATHA ◽  
S. CHANDANA ◽  
◽  
◽  
...  
Keyword(s):  
Operating Temperature ◽  
Vlsi Design ◽  
Pipelined Adc ◽  
Wide Range

Practical color calibration method for multi-projectors display

2009 ◽  
Vol 29 (4) ◽  
pp. 982-986
Author(s):  
Jun ZHANG ◽  
Bang-ping WANG ◽  
Cheng YI ◽  
Xiao-feng LI ◽  
Hui LI
Keyword(s):  
Calibration Method ◽  
Color Calibration

A Calibration Method for Mutual Coupling Across a Vector Sensor

2013 ◽  
Vol 34 (7) ◽  
pp. 1558-1561 ◽  
Author(s):  
Gui-bao Wang ◽  
Hai-hong Tao ◽  
Lan-mei Wang
Keyword(s):  
Mutual Coupling ◽  
Calibration Method ◽  
Vector Sensor
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