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Conference paperGeorgiou J, Constandinou TG, Toumazou C, 2007,
A Micropower Cochlear Prosthesis System Demonstrator
, IEEE International Symposium on Circuits and Systems (ISCAS), Publisher: Institute of Electrical and Electronics Engineers (IEEE), Pages: 1219-1219 -
Conference paperHuang Y, Drakakis EM, Toumazou C, 2007,
A Wide Tuning-Range CMOS Oscillator for An Optoelectronic Retinal Prosthesis System
, IEEE ISCAS 2007 -
Conference paperShepherd L, Georgiou P, Toumazou C, 2007,
A novel voltage-clamped CMOS ISFET sensor interface
, IEEE International Symposium on Circuits and Systems, Publisher: IEEE, Pages: 3331-+, ISSN: 0271-4302- Author Web Link
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- Citations: 30
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Conference paperEftekhar A, Constandinou TG, Triantis IF, et al., 2007,
Towards a Reconfigurable Sense-and-Stimulate Neural Interface Generating Biphasic Interleaved Stimulus
, 3rd International IEEE/EMBS Conference on Neural Engineering (CNE), Publisher: IEEE, Pages: 438-441 -
Journal articleGeorgiou P, Constandinou TG, Toumazou C, 2006,
Low-power spiking chemical pixel sensor
, Electronics Letters, Vol: 42, Pages: 1331-1332, ISSN: 0013-5194 -
Journal articlePremanode B, Chan WP, Toumazou C, 2006,
Ultra-low power precision ISFET readout using global current feedback
, ELECTRONICS LETTERS, Vol: 42, Pages: 1264-1265, ISSN: 0013-5194- Author Web Link
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- Citations: 7
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Journal articlePurushothaman S, Toumazou C, Ou CP, 2006,
Protons and single nucleotide polymorphism detection: A simple use for the ion sensitive field effect transistor
, SENSORS AND ACTUATORS B-CHEMICAL, Vol: 114, Pages: 964-968- Author Web Link
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- Citations: 61
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PatentToumazou C, Georgiou J, 2006,
Reference Circuit
, US2006/0033557A1; US7242241B2A reference circuit comprising first and second field effect transistors connected to form a first current mirror, and a third and fourth field effect transistors connected to form a second current mirror, wherein a property of the first transistor is mismatched relative to the second transistor such that the threshold voltage of the first transistor is significantly higher than the threshold voltage of the second transistor, and the drain current versus gate-source voltage responses of the first and second transistors have substantially different gradients for current levels at which the reference current is operated.
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Journal articleDegenaar P, Constandinou TG, Toumazou C, 2006,
Adaptive ON-OFF spiking photoreceptor
, Electronics Letters, Vol: 42, Pages: 196-198, ISSN: 0013-5194An adaptive spike generator circuit for intelligent vision chips is presented. A pulse frequency modulation spike encoder, capable of providing very high dynamic ranges with power consumption similar to an animal retina, has been developed. The circuit is inspired by the ON-OFF opponency algorithm used by the human eye.
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PatentToumazou C, 2006,
CMOS Current Mode Logic Circuits Using Subthreshold Conduction for Low Power Operation
, GB2416255 (A)The switching transistors in a low-power CMOS current-mode logic circuit are biased to operate in weak inversion. The current-switching structure reduces noise and sensitivity to the process, voltage and temperature (PVT) variations which affect conventional subthreshold CMOS logic circuits. In retinal or cochlear implants analogue circuits operate in weak inversion to achieve low power, and by using current-mode logic satisfactory mixed analogue and digital low-power integrated circuits can be implemented. The logic swing is low and the data rate can be high. The current source Q1 operates in saturated weak inversion. The symmetry of the current-steering branches reduces input pattern sensitivity. A full adder is illustrated.
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Conference papernikolic K, Degenaar P, Toumazou C, 2006,
Modeling and Engineering aspects of ChannelRhodopsin2 System for Neural Photostimulation
, Engineering in Medicine and Biology Society, 2006. EMBS '06. 28th Annual International Conference of the IEEE, Publisher: IEEE, Pages: 1626-1629 -
Conference paperYan Huang, Emmanuel Drakakis, Chris Toumazou, et al., 2006,
An Optoelectronic Platform for Retinal Prosthesis
, IEEE BioCAS, Biomedical Circuits and Systems Conference, Publisher: IEEE, Pages: 110-113 -
Conference paperNikolic K, Degenaar P, Toumazou C, 2006,
Modeling and Engineering Aspects of ChannelRhodopsin2 System for Neural Photostimulation
, 28th IEEE Engineering in Medicine and Biology Society Conference, Pages: 1626-1629 -
Conference paperGeorgiou P, Toumazou C, 2006,
Towards an ultra low power chemically inspired electronic beta cell for diabetes
, IEEE International Symposium on Circuits and Systems, Publisher: IEEE, Pages: 173-+, ISSN: 0271-4302 -
Conference paperConstandinou TG, Toumazou C, 2006,
A Micropower Vision Processor for Parallel Object Positioning and Sizing
, IEEE International Symposium on Circuits and Systems (ISCAS), Publisher: Institute of Electrical and Electronics Engineers (IEEE), Pages: 943-946 -
Conference paperYue X, Drakakis EM, Toumazou C, et al., 2006,
8x16 Channel Physiological Monitoring Platform of Stem Cell Culture Systems
, IEEE Biomedical Circuits and Systems Conference (BioCAS), Publisher: IEEE, Pages: 106-109 -
Journal articleConstandinou TG, Toumazou C, 2006,
A micropower centroiding vision processor
, Solid-State Circuits, IEEE Journal of, Vol: 41, Pages: 1430-1443, ISSN: 0018-9200 -
Conference paperconstandinou TG, Degenaar P, Toumazou C, 2006,
An adaptable foveating vision chip
, 2006 IEEE International Symposium on Circuits and Systems, Publisher: IEEE, Pages: 3566-3569 -
Conference paperNikolic K, Degenaar P, Toumazou C, 2006,
Modeling and engineering aspects of ChannelRhodopsin2 system for neural photostimulation
, 28th Annual International Conference of the IEEE-Engineering-in-Medicine-and-Biology-Society, Publisher: IEEE, Pages: 651-654 -
Journal articleShepherd LM, Toumazou C, 2005,
A biochemical translinear principle with weak inversion ISFETs
, IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, Vol: 52, Pages: 2614-2619, ISSN: 1057-7122- Author Web Link
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- Citations: 37
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