A charge-balanced 4-wire interface for the interconnections of biomedical implants

J. Yang; S. Bai; N. Tran; H. Chun; O. Kavehei; Y. Yang; E. Skafidas; M. Halpern; D. C. Ng; V. Muktamath

doi:10.1109/BioCAS.2013.6679674

A charge-balanced 4-wire interface for the interconnections of biomedical implants

J. Yang, S. Bai, N. Tran, H. Chun, O. Kavehei, Y. Yang, E. Skafidas, M. Halpern, D. C. Ng, V. Muktamath

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

4 Citations (Scopus)

Abstract

This paper presents a charge-balanced 4-wire interface on medical platinum wires for biomedical implants. This interface was originally designed to deliver power and full duplex data between implanted units of a retinal prosthesis. Detailed circuits on both sides of the wire interface are depicted. The proposed method ensures the total electrical charge is balanced over time within the implant to avoid the risk of harmful irreversible electrochemical reactions. Experiments show that the data links using this 4-wire interface design has minimal Bit Error Rate (BER) and very low cost in terms of power and area consumptions. The forward data recovery consumes 300 μW at 600 kbps with an area of 15×200 μm² in 65nm CMOS. The backward data encoding circuit requires an average current of a mere 3 μA at 100 kbps while its area is 15×140 μm².

Original language	English
Title of host publication	2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013
Pages	202-205
Number of pages	4
DOIs	https://doi.org/10.1109/BioCAS.2013.6679674
Publication status	Published - 2013
Externally published	Yes
Event	2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013 - Rotterdam, Netherlands Duration: 31 Oct 2013 → 2 Nov 2013

Publication series

Name	2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013

Conference

Conference	2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013
Country/Territory	Netherlands
City	Rotterdam
Period	31/10/13 → 2/11/13

ASJC Scopus subject areas

Hardware and Architecture
Biomedical Engineering
Electrical and Electronic Engineering

Access to Document

10.1109/BioCAS.2013.6679674

Cite this

Yang, J., Bai, S., Tran, N., Chun, H., Kavehei, O., Yang, Y., Skafidas, E., Halpern, M., Ng, D. C., & Muktamath, V. (2013). A charge-balanced 4-wire interface for the interconnections of biomedical implants. In 2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013 (pp. 202-205). Article 6679674 (2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013). https://doi.org/10.1109/BioCAS.2013.6679674

@inproceedings{69d4a45a2fd5438baff9981fb3d3baa0,

title = "A charge-balanced 4-wire interface for the interconnections of biomedical implants",

abstract = "This paper presents a charge-balanced 4-wire interface on medical platinum wires for biomedical implants. This interface was originally designed to deliver power and full duplex data between implanted units of a retinal prosthesis. Detailed circuits on both sides of the wire interface are depicted. The proposed method ensures the total electrical charge is balanced over time within the implant to avoid the risk of harmful irreversible electrochemical reactions. Experiments show that the data links using this 4-wire interface design has minimal Bit Error Rate (BER) and very low cost in terms of power and area consumptions. The forward data recovery consumes 300 μW at 600 kbps with an area of 15×200 μm2 in 65nm CMOS. The backward data encoding circuit requires an average current of a mere 3 μA at 100 kbps while its area is 15×140 μm2.",

author = "J. Yang and S. Bai and N. Tran and H. Chun and O. Kavehei and Y. Yang and E. Skafidas and M. Halpern and Ng, {D. C.} and V. Muktamath",

year = "2013",

doi = "10.1109/BioCAS.2013.6679674",

language = "English",

isbn = "9781479914715",

series = "2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013",

pages = "202--205",

booktitle = "2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013",

}

Yang, J, Bai, S, Tran, N, Chun, H, Kavehei, O, Yang, Y, Skafidas, E, Halpern, M, Ng, DC & Muktamath, V 2013, A charge-balanced 4-wire interface for the interconnections of biomedical implants. in 2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013., 6679674, 2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013, pp. 202-205, 2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013, Rotterdam, Netherlands, 31/10/13. https://doi.org/10.1109/BioCAS.2013.6679674

A charge-balanced 4-wire interface for the interconnections of biomedical implants. / Yang, J.; Bai, S.; Tran, N. et al.
2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013. 2013. p. 202-205 6679674 (2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013).

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

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AU - Yang, J.

AU - Bai, S.

AU - Tran, N.

AU - Chun, H.

AU - Kavehei, O.

AU - Yang, Y.

AU - Skafidas, E.

AU - Halpern, M.

AU - Ng, D. C.

AU - Muktamath, V.

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N2 - This paper presents a charge-balanced 4-wire interface on medical platinum wires for biomedical implants. This interface was originally designed to deliver power and full duplex data between implanted units of a retinal prosthesis. Detailed circuits on both sides of the wire interface are depicted. The proposed method ensures the total electrical charge is balanced over time within the implant to avoid the risk of harmful irreversible electrochemical reactions. Experiments show that the data links using this 4-wire interface design has minimal Bit Error Rate (BER) and very low cost in terms of power and area consumptions. The forward data recovery consumes 300 μW at 600 kbps with an area of 15×200 μm2 in 65nm CMOS. The backward data encoding circuit requires an average current of a mere 3 μA at 100 kbps while its area is 15×140 μm2.

AB - This paper presents a charge-balanced 4-wire interface on medical platinum wires for biomedical implants. This interface was originally designed to deliver power and full duplex data between implanted units of a retinal prosthesis. Detailed circuits on both sides of the wire interface are depicted. The proposed method ensures the total electrical charge is balanced over time within the implant to avoid the risk of harmful irreversible electrochemical reactions. Experiments show that the data links using this 4-wire interface design has minimal Bit Error Rate (BER) and very low cost in terms of power and area consumptions. The forward data recovery consumes 300 μW at 600 kbps with an area of 15×200 μm2 in 65nm CMOS. The backward data encoding circuit requires an average current of a mere 3 μA at 100 kbps while its area is 15×140 μm2.

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A charge-balanced 4-wire interface for the interconnections of biomedical implants

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