Design of a Second-Order Sigma-Delta Modulator
| Autor: | Bo Wen Ding, Yong Sheng Yin, Hong Hui Deng, Min Guo |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Engineering
Electronic system-level design and verification business.industry Electrical engineering Schematic General Medicine Delta-sigma modulation law.invention Power (physics) CMOS Hardware_GENERAL law Hardware_INTEGRATEDCIRCUITS Operational amplifier Electronic engineering Oversampling business MATLAB computer computer.programming_language |
| Zdroj: | Applied Mechanics and Materials. :3797-3801 |
| ISSN: | 1662-7482 |
| DOI: | 10.4028/www.scientific.net/amm.644-650.3797 |
| Popis: | A second-order single bit Sigma - Delta modulator which can be applied to pressure sensor is designed in this paper.The modulator uses switched-capacitor circuit,and the operational amplifier adopts a differential folded-cascode structure with PMOS tube as input. Optimizes the coefficients at the system level design using Simulink tool. The schematic simulation and analysis is by the tools of Spectre and MATLAB with Global Foundry 0.35um CMOS technology. The modulator with oversampling rate of 256 is designed at the 3.3V power supply. Finally, this paper shows the circuit simulation results of the sigma-delta modulator whose signal-noise rate is 103.9dB and resolution is 16.97bits. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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