A 2 mu W Biomedical Frontend with Sigma Delta ADC for Self-powered U-Healthcare Devices in 0.18 mu m CMOS Technology

Jha, P and Patra, P and Naik, J and Dutta, Asudeb and Acharyya, Amit and P, Rajalakshmi and Singh, Shiv Govind (2015) A 2 mu W Biomedical Frontend with Sigma Delta ADC for Self-powered U-Healthcare Devices in 0.18 mu m CMOS Technology. In: 13th IEEE International NEW Circuits and Systems Conference, JUN 07-10, 2015, Grenoble, FRANCE.

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Abstract

This paper presents an ultra-low power analog front end (AFE) with Sigma Delta modulator ADC meant for acquisition of biopotential signals. The system consists of a signal conditioning stage with programmable gain and bandwidth, a mixed signal automatic gain control (AGC), and a Sigma Delta ADC. The full system is designed in UMC 0.18 mu m CMOS. The AFE achieves an overall linearity of more 10 bits with 0.47 mu W power consumption. The ADC provides 2 nd order noise shaping while using single integrator and an ENOB of similar to 12 bits with 1.4 similar to W power consumption. The system was successfully tested for a ECG signal from PTB database.

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IITH Creators:

IITH Creators	ORCiD
Dutta, Asudeb	UNSPECIFIED
Acharyya, Amit	http://orcid.org/0000-0002-5636-0676
P, Rajalakshmi	UNSPECIFIED
Singh, Shiv Govind	http://orcid.org/0000-0001-7319-879X

Item Type:

Conference or Workshop Item (Paper)

Uncontrolled Keywords:

NEURAL RECORDING AMPLIFIER; NOISE EFFICIENCY FACTOR, Electrocardiography, Detectors, Power demand, Noise shaping, Gain control, Modulation, Signal resolution

Subjects:

Others > Electricity

Divisions:

Department of Electrical Engineering

Depositing User:

Team Library

Date Deposited:

15 Sep 2016 05:53

Last Modified:

29 Aug 2017 11:03

URI:

http://raiithold.iith.ac.in/id/eprint/2755