@article{(Open Science Index):https://publications.waset.org/pdf/13840, title = {A Micro-Watt Second Order Filter for a Chopper Stabilized MEMS Pressure Sensor Interface}, author = {Arup K. George and Wai Pan Chan and Zhi Hui Kong and Minkyu Je}, country = {}, institution = {}, abstract = {This paper describes a low-power second-order filter for a continuous-time chopper stabilized capacitive sensor interface, integrated with a fully differential post-CMOS surface-micromachined MEMS pressure sensor. The circuit uses a single-ended folded-cascode operational amplifier and two GM-C filters connected in cascade. The circuit is realized in a 0.18 μm CMOS process and offers differential to single-ended conversion. The novelty of the scheme is the cascade of two GM-C filters to achieve a second-order filter while minimizing power dissipation. The simulated filter cutoff frequency is 1.14 kHz at common-mode voltage 1.65 V, operating from a 3.3 V supply while dissipating 172μW of power. The filter achieves an operating range of 1V for an output load of 1MOhm and 10pF.}, journal = {International Journal of Electronics and Communication Engineering}, volume = {6}, number = {9}, year = {2012}, pages = {899 - 901}, ee = {https://publications.waset.org/pdf/13840}, url = {https://publications.waset.org/vol/69}, bibsource = {https://publications.waset.org/}, issn = {eISSN: 1307-6892}, publisher = {World Academy of Science, Engineering and Technology}, index = {Open Science Index 69, 2012}, }