A Novel Balanced Ternary Adder Using Recharged Semi-Floating Gate Devices

This paper presents a novel voltage mode Balanced Ternary Adder (BTA), implemented with Recharged Semi- Floating Gate Devices. By using balanced ternary notation, it possible to take advantage of carry free addition, which is exploited in designing a fast adder cell. The circuit operates at 1 GHz clock frequency. The supply voltage is only 1.0 Volt. The circuit is simulated by using Cadence R Analog Design Environment, with CMOS090 process parameters, a 90nm General Purpose Bulk CMOS Process from STMicroelectronics with 7 metal layers. All the capacitors are metal plate capacitors, based on vertical coupling capacitance between stacked metal plates.