A mixed signal chip design for Implantable retinal device

Author

Bo Wang ; Xiuhan Li ; Jingbin Geng ; Jinan Shao ; Hanru Zhang

Author_Institution

Dept. of Electron. & Inf. Eng., Beijing jiaotong Univ., Beijing, China

fYear

2012

fDate

Oct. 29 2012-Nov. 1 2012

Firstpage

1

Lastpage

3

Abstract

A mixed-signal chip for an Implantable retinal prosthetic device is presented in this paper. The chip consists mainly of RF front-end circuits and digital controller. In the proposed architecture, the energy is coupled from external frequency-shift-keying (FSK) signal and get a stable 3.3V voltage through low drop-out regulator(LDO). The information is also generate from FSK signal through demodulation circuit. The chip is fabricated in 0.5 μm standard CMOS process, chip area is 6.25mm², the total power consumption is 10mW. Measurement results show that the performance is conformed to the basic requirements of the microstimlator, LDO can supply stable voltage when the input vary from 3.7V to 5.8V, FSK demodulation and digital controller can work well.

Keywords

CMOS integrated circuits; biomedical electronics; demodulation; frequency shift keying; integrated circuit design; mixed analogue-digital integrated circuits; prosthetics; voltage regulators; FSK demodulation circuit; FSK signal; LDO; RF front-end circuits; digital controller; frequency-shift-keying signal; implantable retinal prosthetic device; low drop-out regulator; microstimulator; mixed signal chip design; power 10 mW; size 0.5 mum; standard CMOS process; voltage 3.3 V; voltage 3.7 V to 5.8 V; Demodulation; Frequency shift keying; Oscillators; Radio frequency; Regulators; Retina; Voltage control; FSK demodulation; Implantable; RF front-end; low drop-out regulator;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuit Technology (ICSICT), 2012 IEEE 11th International Conference on

Conference_Location

Xi´an

Print_ISBN

978-1-4673-2474-8

Type

conf

DOI

10.1109/ICSICT.2012.6467629

Filename

6467629