| Autor: |
Harald Pretl, Patrick Fath, Thomas Faseth, Stefan Schmickl, Tim Schumacher |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
2020 Austrochip Workshop on Microelectronics (Austrochip) |
| Popis: |
For the acquisition of bio-signals, like EEG or ECG, there is a need for low-noise amplifiers that are capable of amplifying input-signals with high source-impedance at very low frequencies 100mV at the electrode-tissue interface, ideally without using external components. This fully differential amplifier achieves a gain of 38.7 dB with a CMRR of 74 dB and an input-referred noise of 0.97 $\mu\mathrm{V}_{\mathrm{rms}}$ while consuming 350 nW of power at 1V supply voltage. This renders the amplifier well suited for RF-powered wireless bio-sensing applications. The amplifier uses a flicker-noise reducing switched capacitor feedback and a special method of metal-metal capacitor design to maximize the area-density. This fully-integrated design is implemented in a 1P6M180 nm CMOS technology using 0.42mm2. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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