A Low Power Voltage Based Winner-take-all Circuit for Analog Neural Networks
نویسنده
چکیده
This paper presents a voltage based CMOS winner-take-all (WTA) circuit for analog voltage signals. The WTA circuit is based on a winner follower and wide-range transconductance amplifiers. The voltage based design uses capacitive storage for low power consumption. The circuit is modularized and its layout size is a linear function of the number of inputs. This makes the circuit easy to be implemented in VLSI circuit. The circuit's processing speed is accelerated by wide-range transconductance amplifiers which offer an extraordinary signal gain. Power consumption is reduced by shutting the transconductance amplifiers off after the competition is completed, while the processing results are stored in the capacitors of the WTA circuit. Schematic organization of this WTA circuit and computer simulation results are also presented.
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