Title :
Low-Power CMOS Comparator with Embedded Amplification for Ultra-high-speed ADCs
Author :
Oliveira, J.P. ; Goes, J. ; Esperança, B. ; Paulino, N. ; Fernandes, J.
Author_Institution :
Fac. de Ciencias e Tecnologia, UNINOVA, Monte da Caparica, Portugal
Abstract :
In this paper the challenge of improving the energy-efficiency of comparators is addressed, by proposing a novel comparator structure, to be used in ultra-high-speed ADCs. In this comparator, the pre-amplification is embedded in the input switched-capacitor network by using the passive-amplification capability of MOS devices. Simulated results show that this comparator exhibits low-offset ultra-fast regeneration-time and high energy-efficiency.
Keywords :
CMOS integrated circuits; analogue-digital conversion; comparators (circuits); low-power electronics; switched capacitor networks; CMOS comparator; MOS devices; analog-to-digital converters; switched-capacitor networks; CMOS technology; Capacitance; Energy efficiency; MOS devices; MOSFETs; Mechanical variables control; Pipelines; Switched capacitor networks; Varactors; Voltage control;
Conference_Titel :
Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on
Conference_Location :
New Orleans, LA
Print_ISBN :
1-4244-0920-9
Electronic_ISBN :
1-4244-0921-7
DOI :
10.1109/ISCAS.2007.378532
