A 10-bit current-steering D/A converter for active pixel sensor control

Author

Rieger, Viola ; Brendler, Christian ; Aryan, Naser Pour ; Rothermel, Albrecht

Author_Institution

Inst. of Microelectron., Univ. of Ulm, Ulm, Germany

fYear

2013

fDate

8-11 Dec. 2013

Firstpage

457

Lastpage

460

Abstract

A compact 10-bit current-steering D/A converter in a 0.35 μm CMOS technology is presented. The DAC is designed for active pixel sensor control of a retinal implant. A new current cell has been used to minimize power consumption and reduce glitching. To guarantee monotonicity and to achieve good dynamic and static performance a segmentation level of 4-6 has been used. A triple common-centroid layout technique has been applied and an active area of 0.7 mm² has been used. The measured differential and integral linearity errors are less than ± 0.2 LSB and ± 0.3 LSB, respectively.

Keywords

CMOS integrated circuits; digital-analogue conversion; eye; prosthetics; sensors; CMOS technology; active pixel sensor control; current cell; current-steering D/A converter; differential linearity errors; dynamic performance; integral linearity errors; power consumption; retinal implant; segmentation level; size 0.35 mum; static performance; triple common-centroid layout technique; word length 10 bit; Arrays; Implants; Microprocessors; Retina; Switches; Transistors;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits, and Systems (ICECS), 2013 IEEE 20th International Conference on

Conference_Location

Abu Dhabi

Type

conf

DOI

10.1109/ICECS.2013.6815453

Filename

6815453