A novel analog-to-digital conversion architecture using electron waveguides

Author

Eugster, C.C. ; Nuytkens, P.R. ; del Alamo, J.A.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., MIT, Cambridge, MA, USA

fYear

1992

fDate

13-16 Dec. 1992

Firstpage

495

Lastpage

498

Abstract

We have demonstrated a novel analog-to-digital (A:D) conversion architecture based on the quantized conductance of electron waveguides. In our scheme, a dual electron waveguide (DWG) device implements a binary quantizer and encoder for one significant bit. The conductance values of the on and off states are 2e/sup 2//h and zero, respectively. By cascading multiple DWG devices, higher order bits can be attained. In this paper, we demonstrate the first significant bit and the second significant bit for a 2-bit analog-to-digital converter using a DWG device fabricated in an AlGaAs/GaAs modulation-doped heterostructure.<>

Keywords

III-V semiconductors; aluminium compounds; analogue-digital conversion; encoding; gallium arsenide; quantum interference devices; semiconductor junctions; AlGaAs-GaAs; AlGaAs/GaAs modulation-doped heterostructure; analog-to-digital conversion architecture; binary quantizer; cascading; encoder; multiple dual electron waveguide; quantized conductance; Aluminum compounds; Analog-digital conversion; Encoding; Gallium compounds; Quantum effect semiconductor devices; Semiconductor junctions;

fLanguage

English

Publisher

ieee

Conference_Titel

Electron Devices Meeting, 1992. IEDM '92. Technical Digest., International

Conference_Location

San Francisco, CA, USA

ISSN

0163-1918

Print_ISBN

0-7803-0817-4

Type

conf

DOI

10.1109/IEDM.1992.307409

Filename

307409