A CMOS Chip With Active Pixel Array and Specific Test Features for Subretinal Implantation

被引：72

作者：

Rothermel, Albrecht ^{[1
]}

Liu, Liu ^{[1
]}

Aryan, Naser Pour ^{[1
]}

Fischer, Michael ^{[2
]}

Wuenschmann, Juergen ^{[1
]}

Kibbel, Steffen ^{[3
]}

Harscher, Alex ^{[3
]}

机构：

[1] Univ Ulm, Inst Microelect, D-89081 Ulm, Germany

[2] CAD UL Elect Serv GmbH, D-89079 Ulm, Germany

[3] Retina Implant AG, D-72770 Reutlingen, Germany

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 2009年 / 44卷 / 01期

关键词：

Active pixel array; balanced charge injection; logarithmic photo sensor; low input impedance amplifier; polyimide ribbon; restoring visual perception; subretinal implant; TiN electrodes;

D O I：

10.1109/JSSC.2008.2007436

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents a CMOS imager chip that is aimed at subretinal implantation for partially restoring human vision. It has low supply voltage (+/- 2 V) and all DC free terminals for long life wired operation. Stimulation voltage is increased to approximately 4 V-PP by low voltage drop design. 40 x 40 pixel cells including light sensors, amplifiers, control logic and electrode drivers are addressed sequentially to improve power consumption and spatial resolution of perception. Pad count is limited to 6, which requires a specific test procedure. The 3 x 3 mm(2) design is fabricated in a 0.35 mu m CMOS technology optimized for optical performance.

引用

页码：290 / 300

页数：11

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