Existing FOG hardware is typically limited by some issues such as the large volume of the devices， low integration， and difficulty in meeting miniaturization requirements associated with traditional discrete-component signal processing circuits for interferometric FOGs. In this study，an integrated solution based on a system in a package(SiP)is proposed to solve these problems. The core components are integrated into a single dedicated chip along with their peripheral circuits to perform signal acquisition，processing，and feedback. These include an analog-to-digital converter(ADC)，a field-programmable gate array(FPGA)，a digital-to-analog converter(DAC)，and flash memory. This chip was applied to a FOG system based on a coil of optical fiber with a diameter of 70 mm and a total length of 1 000 m. The results show that the bias stability was better than 0. 208 12 °/h(with 10 s smoothing)over the full temperature range from . 30℃ to 60℃，and the angular random walk coefficient was 8. 924× 10.. °/√h. Thus，the performance of the proposed system meets the requirements of practical engineering applications. This solution provides a feasible technical path for the miniaturization and integration of FOG circuits and serves as an engineering reference for the development of these systems.