A 9-Bit Configurable Current Source with Enhanced Output Resistance for Cochlear Stimulators

被引：26

作者：

Guo, Song ^{[1
]}

Lee, Hoi ^{[1
]}

Loizou, Philipos ^{[1
]}

机构：

[1] Univ Texas Dallas, Dept Elect Engn, Richardson, TX 75080 USA

来源：

PROCEEDINGS OF THE IEEE 2008 CUSTOM INTEGRATED CIRCUITS CONFERENCE | 2008年

关键词：

D O I：

10.1109/CICC.2008.4672134

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 configurable current source for cochlear stimulators. A switchable multi-bias active-cascode architecture is developed to provide a 9-bit output current in a small implementation area. A stacking MOS structure enables the current source to achieve high output resistance and large voltage compliance. Implemented in a standard 0-35 mu m CMOS process, the current source can source a maximum 1mA current, provide >= 4.77V voltage compliance under a 5V supply and achieve >50M Omega output resistance in 0.26mm(2).

引用

页码：511 / 514

页数：4

共 7 条

[1] A 32-site 4-channel high-density electrode array for a cochlear prosthesis [J].

Bhatti, Pamela T. ;

Wise, Kensall D. .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2006, 41 (12) :2965-2973

[2] Effects of stimulation mode on threshold and loudness growth in multielectrode cochlear implants [J].

Chatterjee, M .

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1999, 105 (02) :850-860

[3] An arbitrary waveform stimulus circuit for visual prostheses using a low-area multibias DAC [J].

DeMarco, SC ;

Liu, WT ;

Singh, PR ;

Lazzi, G ;

Humayun, MS ;

Weiland, JD .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2003, 38 (10) :1679-1690

[4] A compact large voltage-compliance high output-impedance programmable current source for implantable microstimulators [J].

Ghovanloo, M ;

Najafi, K .

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, 2005, 52 (01) :97-105

[5] A PDA-based research platform for cochlear implants [J].

Lobo, Arthur P. ;

Loizou, Philip C. ;

Kehtarnavaz, Nasser ;

Torlak, Murat ;

Lee, Hoi ;

Sharma, Anu ;

Gilley, Phillip ;

Peddigari, Venkat ;

Ramanna, Lakshmish .

2007 3RD INTERNATIONAL IEEE/EMBS CONFERENCE ON NEURAL ENGINEERING, VOLS 1 AND 2, 2007, :28-+

[6] Mimicking the human ear [J].

Loizou, PC .

IEEE SIGNAL PROCESSING MAGAZINE, 1998, 15 (05) :101-130

[7]

Tsividis Y., 1999, OPERATION MODELING M, V2nd

← 1 →