High Speed and Ultra Low-Voltage CMOS Carry Propagation Chain using Floating-Gate Transistors
نویسنده
چکیده
Abstract—Ultra low-voltage (ULV) CMOS logic for highperformance applications is presented. By applying floating capacitors we can increase the current level of MOS transistors for supply voltages below 500mV . The current level of the transistors may be increased by a factor 40 for supply voltages below 0.3V. Simple NAND gates are presented using different topologies. The NAND gates are exploited to provide a highspeed and ultra low-voltage serial carry chain. Compared to conventional serial CMOS carry gates the delay is reduced by a factor 10 or more. Simulated data are based on SpectreS simulator provided by Cadence and are valid for 90nm TSMC CMOS process.
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