Fully‐differential flipped‐source‐follower low‐pass analogue filter in CMOS 28 nm bulk
| Autor: | L. Mangiagalli, Marcello De Matteis, Andrea Baschirotto |
|---|---|
| Přispěvatelé: | De Matteis, M, Mangiagalli, L, Baschirotto, A |
| Rok vydání: | 2018 |
| Předmět: |
Physics
business.industry Low-pass filter 020208 electrical & electronic engineering Transistor Electrical engineering 020206 networking & telecommunications 02 engineering and technology Filter (signal processing) Noise (electronics) law.invention Threshold voltage Analogue filter CMOS Control and Systems Engineering law Hardware_INTEGRATEDCIRCUITS 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering business Voltage |
| Zdroj: | IET Circuits, Devices & Systems. 12:689-695 |
| ISSN: | 1751-8598 1751-858X |
| Popis: | This study presents a novel low-pass continuous-time filter based on the voltage flipped-source-follower (SF). The filter efficiently operates in CMOS 28 nm and improves the SF filters state-of-the-art thanks to a dedicated circuit that operates in fully-differential fashion (instead of the pseudo-differential typically used in state-of-the-art SF filters) with a dedicated Common-Mode-Feedback circuit. Thus this work extends the application of the SF filtering stages to the nm-range technologies where threshold voltage ( V TH ) is only two times lower than the supply voltage ( V DD ) for what regards standard-process MOS transistors. In order to validate the design concept, the proposed filter has been designed in CMOS 28 nm technology. Extensive simulation results of a 131 MHz -3 dB frequency proof-of-concept second-order filter are proposed. The device consumes 510 μW power from a single 1 V supply-voltage. In-band integrated noise is 160 μV RMS and IIP3 is 19 dBm for 20 and 21 MHz input tones frequencies. Simulation results lead to 166 J -1 figure-of-merit, outperforming the analogue filter state-of-the-art. |
| Databáze: | OpenAIRE |
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