Title :
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
fDate :
Oct. 29 2012-Nov. 1 2012
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;
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
DOI :
10.1109/ICSICT.2012.6467629
