| Autor: |
Chao Yuan, Yao-Ping Liu, Yvonne Lam Ying Hung |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
ISCAS |
| DOI: |
10.1109/iscas.2014.6865394 |
| Popis: |
A new highly energy-efficient SAR ADC with capacitor constructed bypass-window structure is proposed for low-power biomedical applications. The proposed structure is able to bypass the first few conversion phases when the input signal is within a pre-defined window, resulting in an overall power reduction of 59% when the input signal has a possibility of 80% to activate the bypass-window function. Meanwhile, this structure maintains symmetry and has good common-mode noise immunity. Extra comparators and external window-reference voltage are not needed in this new structure. This circuit is designed in 40nm 1P6M CMOS technology. Simulation results show that the ADC achieves a Signal-to-Noise-and-Distortion-Ratio (SNDR) of 61.55 dB when it runs at 1V and at a sampling rate of 2-MS/s. The total power consumption is 11.82μW and the Figure-of-Merit (FoM) is 6.1 fJ/conversion-step. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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