A photodetector array for a one terabyte optical tape recorder

Author

Self, Paul ; Miller, Richard ; Brehmer, Kevin ; Bielak, Richard

Author_Institution

Avasem Corp., San Jose, CA, USA

fYear

1991

fDate

12-15 May 1991

Abstract

A 192-channel photodetector array analog/digital IC where each channel contains an integrated photodetector diode, a current-to-voltage amplifier, an optical threshold adjust circuit with differential sample and hole, and a comparator has been fabricated. The measured input referred noise current of the amplifier is less than 0.68 pA/(Hz)^1/2 with a signal bandwidth of at least 2.15 MHz and a supply current for one amplifier of only 185 μA. The photodiode responsivity, the noise of the current-to-voltage amplifier, and the accuracy of the threshold adjust circuit with differential sample and hold were found to be better than system requirements

Keywords

application specific integrated circuits; optical storage; photodetectors; 1 TB; 185 muA; 2.15 MHz; analog/digital IC; comparator; current-to-voltage amplifier; input referred noise current; integrated photodetector diode; optical tape recorder; optical threshold adjust circuit; photodetector array; photodiode responsivity; signal bandwidth; supply current; threshold adjust circuit; Analog integrated circuits; Differential amplifiers; Digital integrated circuits; Optical amplifiers; Optical arrays; Optical noise; Optical recording; Photodetectors; Photonic integrated circuits; Stimulated emission;

fLanguage

English

Publisher

ieee

Conference_Titel

Custom Integrated Circuits Conference, 1991., Proceedings of the IEEE 1991

Conference_Location

San Diego, CA

Print_ISBN

0-7803-0015-7

Type

conf

DOI

10.1109/CICC.1991.163999

Filename

163999