Title :
Improved Low-Power Low-Voltage CMOS Comparator for 4-Bit Flash ADCS for UWB Applications
Author :
Oliveira, J.P. ; Goes, J. ; Paulino, N. ; Ferna, J.
Author_Institution :
Universidade Nova de Lisboa, Lisbon
Abstract :
In this paper we propose a novel comparator structure, to be used in low-resolution ultra-high-speed ADCs that improve the energy-efficiency. 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; amplification; analogue-digital conversion; comparators (circuits); switched capacitor networks; CMOS comparator; UWB application; energy-efficiency; flash ADC; preamplification; storage capacity 4 bit; switched-capacitor network; CMOS technology; Calibration; Capacitance; Energy efficiency; MOS capacitors; MOSFETs; Mechanical variables control; Sampling methods; Threshold voltage; Voltage control; Analog-to-digital conversions; Comparator; High-speed;
Conference_Titel :
Mixed Design of Integrated Circuits and Systems, 2007. MIXDES '07. 14th International Conference on
Conference_Location :
Ciechocinek
Print_ISBN :
83-922632-9-4
Electronic_ISBN :
83-922632-9-4
DOI :
10.1109/MIXDES.2007.4286170
