Linearity-Enhanced Ring Amplifier Using Adaptive Slew-Rate Feed-Forward Path
| Autor: | Ahmed N. Mohieldin, Faisal Hussien, Mohamed M. Aboudina, Ahmed Gharib Gadel-Karim |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Total harmonic distortion Amplifier 020208 electrical & electronic engineering Feed forward Linearity Slew rate 02 engineering and technology Power (physics) CMOS Logic gate Hardware_INTEGRATEDCIRCUITS 0202 electrical engineering electronic engineering information engineering Electronic engineering Electrical and Electronic Engineering |
| Zdroj: | IEEE Transactions on Circuits and Systems II: Express Briefs. 67:2908-2912 |
| ISSN: | 1558-3791 1549-7747 |
| Popis: | This brief presents a novel adaptive slew-rate ring amplifier. The proposed technique enhances the linearity, without stability degradation, using a rail-to-rail controlled feed-forward path used in parallel with the main ring amplifier. It offers additional degrees of freedom to improve the linearity/power consumption trade-off proposed in other reported slew-rate enhancement techniques. The proposed design has been implemented and simulated in a low-cost CMOS 65 nm technology. Operating from a single 0.9 V power supply, it consumes $186~\mu \text{A}$ for switching frequency of 210MHz. For the same current consumption, it achieves an improvement of 10 dB in the total harmonic distortion (THD) compared to state-of-the-art. |
| Databáze: | OpenAIRE |
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