On-chip integrated CMOS optical spectrometer with a light-to-frequency converte...

• Author(s): Graaf, G. de ; Correia, J. H. ; Bartek, M. ; Wolffenbuttel, R. F.
• Date: 1999
• Persistent ID: http://hdl.handle.net/1822/4817
• Origin: RepositóriUM - Universidade do Minho
• Subject(s): Optical spectrometer; Bus interface
• Document Type: Conference Object
• Language: English

Description

A single-chip CMOS optical microspectrometer containing an array of 16 addressable Fabry-Perot etalons (each one with different resonance cavity length), photodetectors and circuits for readout, multiplexing and driving a serial bus interface has been fabricated in a standard 1.6 mm CMOS technology (chip area 3.9x4.2 mm2). The result is a chip that can operate using only four external connections (including Vdd and Vss) covering the optical range of 380-500 nm with FWHM=18 nm. Frequency output and serial bus interface allow easy multisensor, multichip interfacing using a microcontroller or a personal computer. Power consumption is 1250 mW for a clock frequency of 1 MHz