DocumentCode
3533096
Title
A Differential Difference Comparator for multi-step A/D converters
Author
Xu, Gang ; Yuan, Jiren
Author_Institution
Dept. of Electroscience, Lund Univ., Sweden
Volume
1
fYear
2003
fDate
25-28 May 2003
Abstract
The proposed Differential Difference Comparator (DDC) provides easy linear voltage summing/subtraction and comparison functions via current operation. The speed of this unconventional comparator drastically improved since there is no feedback loop and coupling capacitors needed to maintain the linearity. The linear input range is also enlarged by the common mode compression. The principle, design considerations and simulation results are presented based on a comparator used in an 8 bit 2-step A/D converter over 100 MS/s.
Keywords
analogue-digital conversion; comparators (circuits); 8 bit; common mode compression; comparison function; current operation; differential difference comparator; linear voltage subtraction; linear voltage summing; multi-step A/D converter; Analog-digital conversion; Capacitors; Coupling circuits; Differential amplifiers; Energy consumption; Hardware; Linearity; Parasitic capacitance; Sampling methods; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on
Print_ISBN
0-7803-7761-3
Type
conf
DOI
10.1109/ISCAS.2003.1205549
Filename
1205549
Link To Document