Exploration of ring oscillator design space for temperature measurements on FPGAs

While numerous publications have presented ring oscillator designs for temperature measurements a detailed study of the ring oscillator´s design space is still missing. In this work, we introduce metrics for comparing the performance and area efficiency of ring oscillators and a methodology for determining these metrics. As a result, we present a systematic study of the design space for ring oscillators for a Xilinx Virtex-5 platform FPGA.