A 52 μw Heart-Rate Measurement Interface Fabricated on a Flexible Foil with A-IGZO TFTs
| Autor: | Zulqarnain, M., Stanzione, S., Steen, J.L.P.J. van der, Gelinck, G.H., Myny, K., Abdinia, S., Cantatore, E. |
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| Rok vydání: | 2018 |
| Předmět: |
Wearable applications
Wireless communications Experimental characterization Heart rate measurements IGZO Thin film transistors Bio-signal read out Heart Semiconducting indium compounds 1/F noise Pulse width modulation voltage to pulse width conversion Fabrication Wireless telecommunication systems PWM Biosignals Pulsewidths |
| Zdroj: | 44th IEEE European Solid State Circuits Conference, ESSCIRC 2018, 3 September 2018 through 6 September 2018, 126-129 |
| Popis: | This paper presents a 52 μW heart-rate measurement interface for wearable applications, fabricated on a flexible foil with a-IGZO TFTs. The interface consists of a cascaded diode-connected load preamplifier with a gain of 22 dB in 3 kHz bandwidth. The output is provided as a binary PWM waveform, which can be sent to a reader device using wireless communication. Voltage to pulse-width conversion is achieved with a simple and power minimalistic approach, which exploits a reset integrator. Experimental characterization demonstrates an overall low-frequency gain of the system equal to 25 msec/V and an input referred noise of 186.3 μV rms. In-vivo measurements have been performed, resulting in a 60 bpm heart-rate for a person at rest. © 2018 IEEE. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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