| Summary: | 碩士 === 國立交通大學 === 電信工程系所 === 92 === In this research, a low power high accuracy analog to digital converters (ADCs) with higher and wider temperature rang is designed. The proposed design plays an important role in modern system-on-chip thermal management system, which acts as an interface circuitry between monolithic temperature sensors and thermal management unit. Several challenges exists, including temperature range, power
dissipation requirements and processing technology compatibility, which cause the design of such an ADC become a difficult work. This thesis examines a practical design of oversampling ADC based on sigma-delta modulation with thermal considerations. The prototype is fabricated in a TSMC 0.25µm standard CMOS process. The experimental result achieves eight bits resolutions and dissipates only a few mw which fulfill the system requirements of targeting thermal management design. Besides these requirements, the processing scaling of proposed ADC is considered in order to be compatible with targeting SoC fabrication technology. The integration of monolithic temperature sensor, proposed ADC and thermal management unit keep the progressing trend of modern VLSI and high-density circuits without thermal problems.
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