Full Custom CORDIC Arithmetic Unit Design

Floating-point trigonometric computing is a fundamental operation in navigation systems,3D image processing,radar signal preprocessing and so on.This paper presents a floating point trigonometric computing circuit using a CORDIC algorithm and a full custom layout method,and the output data are compatible with the IEEE-754 signal precision floating-point standard.It describes the CORDIC algorithm principle and chooses a pipeline structure based on the principle of priority on performance.A static circuit structure and a full custom layout are given in the SIMC 0.13μm 1P8M CMOS process.The silicon area of data path is 605 284μm2 and the critical path delay is 3.013ns in the SS(Slow-Slow) corners.