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

fYear

2008

fDate

14-17 Sept. 2008

Firstpage

11

Lastpage

14

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICSES.2008.4673344

Filename

4673344