Design of Voltage-Mode Tunable Active Filter Based on Current-Mode Active
| Autor: | Ssu-Che Yang, 楊思哲 |
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| Rok vydání: | 2008 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 96 The key point of major research of this thesis is that the author uses the linear transformation method to design the low-pass tunable bandwidth active filter. This thesis can be divided into three parts. The first part of this thesis is to implement a 6th-order Butterworth low-pass filter using second generation current conveyors with TSMC 0.35μm 2P4M technology. The power supply is ±1.65V, the power consumption is 30.7mW, and the chip area is 0.168588mm2. The second part of this thesis is to implement a 6th-order tunable Butterworth low-pass filter using digitally controlled method that achieved the bandwidth of active filter can be tuned to control second generation current conveyors with TSMC 0.18μm 1P6M technology. The tunable bandwidth of active filter is about 11KHz to 1.44MHz. The power supply and the power consumption are ±0.9V and 5.54mW, and the chip area is 0.359296mm2. The third part of this thesis is to implement a 6th-order tunable Butterworth low-pass filter using the another active component called the differential difference current conveyor and uses digitally controlled method to control differential difference current conveyors to achieve the purpose that the bandwidth of active filter can be tuned with TSMC 0.18μm 1P6M technology. The tunable bandwidth of active filter is about 14KHz to 2.62MHz. The power supply and the power consumption are 1.8V and 3.64mW, and the chip area is 0.31515mm2 without PAD circuits. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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