Abstract
Addition is an essential arithmetic operation that is used extensively in processing of digital information. Now a days approximate computing is emerging methodology in area of low power VLSI design that trades off accuracy for faster and power efficient designs. Accuracy Configurable Approximate Adders is an attractive option that provides a flexibility to user to configure adder as accurate or approximate. This paper presents a new Carry Maskable Adder realization based on Full Swing-Modified Gate Diffusion Input (GDI) technique. Proposed design is functionally verified through simulations in LTspice XVII. The performance comparison of proposed design with CMOS based counterpart show that the percentage reduction in delay is 32% while power consumption is reduced by 45%.
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