Title :
A high speed centroid computation circuit in analog VLSI
Author :
Bashyam, Ananth ; Furth, Paul M. ; Giles, Michael K.
Author_Institution :
Klipsch Sch. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA
Abstract :
We present a new centroid computation circuit with very low dc offset and high bandwidth. A novel test setup is also shown to test adaptive optic integrated circuits. Static and dynamic simulation and test results of the centroid computation circuit are shown. Compared to the work of Deweerth we report a 4.3 times increase in the bandwidth in both simulation and test results. The centroid circuit is fabricated in the AMI 0.5 μm CMOS process. A 1D centroid circuit with 7 photodiodes has dimensions equal to 765 μm×90 μm.
Keywords :
CMOS analogue integrated circuits; VLSI; adaptive optics; circuit simulation; current mirrors; high-speed integrated circuits; integrated optoelectronics; photodetectors; photodiodes; 0.5 micron; CMOS process; adaptive optic integrated circuit; analog VLSI; current mirrors; dc offset; dynamic simulation; high bandwidth; high speed centroid computation circuit; photodetectors; photodiodes; static simulation; Adaptive optics; Ambient intelligence; Analog computers; Bandwidth; Circuit simulation; Circuit testing; Computational modeling; Integrated circuit testing; Photonic integrated circuits; Very large scale integration;
Conference_Titel :
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on
Print_ISBN :
0-7803-8251-X
DOI :
10.1109/ISCAS.2004.1329162
