Report
A CMOS Analog Front-End for Implantable Pulmonary Artery Pressure Monitoring System
| العنوان: | A CMOS Analog Front-End for Implantable Pulmonary Artery Pressure Monitoring System |
|---|---|
| المؤلفون: | Besirli, M, Ture, K, Dehollain, C, Barrettino, D, Mattavelli, M |
| المصدر: | In: Proceedings of the 2019 15th Conference on Ph.D Research in Microelectronics and Electronics (PRIME). (pp. pp. 261-264). IEEE: Lausanne, Switzerland. (2019) |
| بيانات النشر: | IEEE |
| سنة النشر: | 2019 |
| المجموعة: | University College London: UCL Discovery |
| مصطلحات موضوعية: | heart failure (HF), pulmonary artery pressure (PAP), Wheatstone bridge sensor, capacitively-coupled instrumentation amplifier (CCIA), chopping technique |
| الوصف: | This paper presents an energy-efficient analog frontend circuit to monitor the pulmonary artery pressure (PAP) with piezoresistive pressure sensors. A low-power capacitively-coupled instrumentation amplifier (CCIA) is developed in order to boost the amplitude of the bridge sensor to the input range of the analog-to-digital converter (ADC). The 1/f noise and input-referred offset of the amplifier are eliminated by the chopping technique. Simulation results show that this CCIA with chopping technique achieves an input-referred noise density of 38.7 nV/√Hz and an input-referred offset voltage of 4 μV with a current consumption of 4.28 μA at 1.8 V voltage supply. This gives a noise-efficiency factor (NEF) of 3.1. Dual supply voltages are used to decrease the power consumption of the bridge sensor. The pressure range is selected to be between 0 and 125 mmHg and the bandwidth of the interface is set from DC to 400 Hz with an RC low pass filter (LPF). This low-noise, low-offset analog front-end circuit achieves an accuracy of 0.125 mmHg. |
| نوع الوثيقة: | report |
| وصف الملف: | text |
| اللغة: | English |
| Relation: | https://discovery.ucl.ac.uk/id/eprint/10136119/1/Ture_Prime_19.pdf; https://discovery.ucl.ac.uk/id/eprint/10136119/ |
| الاتاحة: | https://discovery.ucl.ac.uk/id/eprint/10136119/1/Ture_Prime_19.pdf https://discovery.ucl.ac.uk/id/eprint/10136119/ |
| Rights: | open |
| رقم الانضمام: | edsbas.964FA2D0 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |