A 8-bit SAR ADC using current mode approach for bio-medical applications

Author

Shenoy, Meetha V. ; Varghese, Kirti Susan ; Upadhyaya, Manasa S.

Author_Institution

Dept. of EEE&I, BITS Pilani, Zuarinagar, India

fYear

2014

fDate

10-12 Oct. 2014

Firstpage

1

Lastpage

5

Abstract

This paper deals with the design of a SAR-ADC with 8-bit resolution suited for bio-medical application. The design of the key components of the SAR ADC namely, DAC, Comparator and Sample and Hold circuit (S/H) has been carried out using current mode approach with the DAC operating at sub-threshold regime. The input current range is 10nA to 2.57μA with 10nA as the LSB. The circuit has been designed in UMC 180nm technology Twin-Well Process.

Keywords

analogue-digital conversion; biomedical electronics; digital-analogue conversion; sample and hold circuits; DAC; S-H circuit; SAR ADC; UMC technology twin-well process; biomedical applications; comparator; current 10 nA to 2.57 muA; current mode approach; sample and hold circuit; size 180 nm; subthreshold regime; word length 8 bit; Approximation methods; CMOS integrated circuits; Capacitors; Inverters; Power demand; Registers; Transistors; Current Comparator; Current Mode Design; S/H Circuit; SAR ADC; Sub-Threshold Operation of DAC;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication, Signal Processing and Networking (NCCSN), 2014 National Conference on

Conference_Location

Palakkad

Type

conf

DOI

10.1109/NCCSN.2014.7001152

Filename

7001152