Title :
A current mode multi-channel Wilkinson ADC
Author :
Nambiar, N. ; Blalock, Benjamin J. ; Ericson, M. Nance ; Kao, M.H.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Univ. of Tennessee, Knoxville, TN
Abstract :
A current mode multi-channel ADC has been designed in a 0.5-mum bulk CMOS process. The ADC is capable of supporting multiple channels with an input current range of 10 muA to 80 muA. The main blocks in the ADC include a current ramp generator, multiple current comparators and a 12-bit Gray code counter. Simulation results are presented that predict 12-bit resolution, sampling rates up to 20 Ksps, and a per-channel power consumption of less than 2 mW using a Wilkinson architecture with 8 channels.
Keywords :
CMOS integrated circuits; Gray codes; analogue-digital conversion; current comparators; CMOS process; Gray code counter; current 10 muA to 80 muA; current mode multichannel Wilkinson ADC; current ramp generator; multiple current comparators; size 0.5 mum; Counting circuits; Drives; Dynamic range; Energy consumption; Mirrors; Reflective binary codes; Sampling methods; Signal design; Signal processing; Voltage; Current mode; Gray code counter; Multi-channel ADC; Ramp Generator;
Conference_Titel :
Signals and Electronic Systems, 2008. ICSES '08. International Conference on
Conference_Location :
Krakow
Print_ISBN :
978-83-88309-47-2
Electronic_ISBN :
978-83-88309-52-6
DOI :
10.1109/ICSES.2008.4673344
