Sigma-Delta Analog to Digital convertor for multi-sensor SOC

• Main Authors: Liu, Chih-Chun, 劉志峻
• Other Authors: Wen, Kuei-Ann
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/62551178322242965116

碩士 === 國立交通大學 === 電子工程學系 電子研究所 === 102 === In the thesis, we design a high resolution Analog to Digital converter for Multi-sensor SOC. Due to low bandwidth of MEMS applications, the three order feed-forward type SDM is adopted. For high resolution of MEMS application, and it can achieve to 256 of OSR. When the three order SDM is designed, the non-ideal effect and system stability need to be considered. Therefore, we establish an equivalent behavioral model in MATLAB before circuit design. The behavioral model can help reduce the duration of circuit level simulation. The bandwidth of design specification is 1 KHz under 1.8V of power supply. Finally, it’s power dissipation is 424uW. Chip Area with PAD is 1980x960um^2. The performance of SQNR and DR are 90.9 dB and 94.9 dB respectively, and the resolution of proposed design is 14 bits.