Abstract
An E-D GaAs inverter in the low supply voltage region was analysed to obtain small energy operation. The optimum values for the switching FET threshold voltage and an average load current at a supply voltage VDD = 0.4 V are 0.2 V and half of an average on-current for the switching FET, respectively. Following this analytical design, 15-stage ring oscillators were fabricated and a minimum value for the product of inverter power dissipation and inverter switching time Pdistpd of 0.75 fJ was obtained.
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