Title :
A neuro-stimulus chip with telemetry unit for cochlear implant
Author :
Dong, Mian ; Zhang, Chun ; Wang, ZhiHua ; Li, DongMei
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
This paper presents a 16-channel cochlear implant which supports 4 stimulus modes and provides a highest stimulus rate of 15k pulses per second per channel, and dynamic range of 60dB with the 10 bit D/A converter. The device consists of a coil, a rectifier and regulator, and a mixed analog and digital neuro-stimulus ASIC which decodes telemetry command and generates stimulus signals. The chip is fabricated using 1.2μm 2M/2P standard CMOS process and the die size is 3.56 mm × 3.67mm. The circuit is working properly at a telemetry data rate of 500 Kbps in carrier of 10 MHz while the peak power consumption is 35 mW.
Keywords :
CMOS integrated circuits; biomedical telemetry; ear; hearing aids; mixed analogue-digital integrated circuits; prosthetics; 10 MHz; 3.56 mm; 3.67 mm; 35 mW; 60 dB; CMOS; cochlear implant; mixed analog and digital neuro-stimulus ASIC; neuro-stimulus chip; telemetry unit; Application specific integrated circuits; CMOS process; Cochlear implants; Coils; Decoding; Dynamic range; Rectifiers; Regulators; Signal generators; Telemetry;
Conference_Titel :
Biomedical Circuits and Systems, 2004 IEEE International Workshop on
Print_ISBN :
0-7803-8665-5
DOI :
10.1109/BIOCAS.2004.1454114
