1. State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai 200433, China
2. State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai 200433, China e-mail:
3. Tongfu Microelectronics Co., LTD, Nantong 226006, Jiangsu, China
4. Tongfu Microelectronics Co., LTD, Nantong 226006, Jiangsu, China;
5. School of Microelectronics, Tianjin University, Tianjin 300072, China e-mail:
6. Mechanical Engineering, Chung Hua University, Hsinchu 30012, Taiwan