A single-chip CMOS optical microspectrometer with light-to-frequency converter ...

• Author(s): Correia, J. H. ; Graaf, G. de ; Bartek, M. ; Wolffenbuttel, R. F.
• Date: 2002
• Persistent ID: http://hdl.handle.net/1822/4195
• Origin: RepositóriUM - Universidade do Minho
• Subject(s): Fabry–Perot etalon; Internal/external bus interface
• Document Type: Article
• Language: English

Description

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