Abstract
Wide Range High Precision CMOS Exponential Circuit Based on Linear Least Squares Approach
Highlights
Computational circuits are important building blocks which are utilized in various applications in the field of signal processing
Squaring circuits represent the basic cell for realizing any continuous function, using function synthesizer circuits [4], [5]
The method presented in [14], [15] use pseudo-exponential functions which result in simple realization of the circuits and relatively low power consumption, the precision and dynamic range have been sacrificed
Summary
Computational circuits are important building blocks which are utilized in various applications in the field of signal processing. The method presented in [14], [15] use pseudo-exponential functions which result in simple realization of the circuits and relatively low power consumption, the precision and dynamic range have been sacrificed. Higher-order terms proposed in [20] benefit from higher dynamic range in comparison with above mentioned methods, at the cost of complex implemented circuits and lack of area efficiency which leads to increasing in power dissipation. Beside these classifications, designing the circuit with single power supply is preferred to those in dual mode; while the circuits reported in [7], [10], [13,14,15], [18], [19] require dual supply voltages. Custom type of polynomials including coefficients and terms are defined which are a, b, c and d for coefficients and
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