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Prototype analysis of a low-power, small-scale wearable medical device

Pablo Dutra da Silva

Pablo Dutra da Silva

Electrical Engineering Department, State University of Santa CatarinaSanta Catarina, Brazil
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Silva, Pablo Dutra da
 and 
Pedro Bertemes Filho

Pedro Bertemes Filho

Electrical Engineering Department, State University of Santa CatarinaSanta Catarina, Brazil
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Filho, Pedro Bertemes
  
Jan 04, 2025
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Published Online: Jan 04, 2025
Page range: 169 - 176
Received: Nov 20, 2024
DOI: https://doi.org/10.2478/joeb-2024-0020
Keywords
© 2024 Pablo Dutra da Silva et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1:

System diagram for the current device under development.
System diagram for the current device under development.

Figure 2:

System diagram for the current device under development.
System diagram for the current device under development.

Figure 3:

Enhanced Howland Current source Schematic.
Enhanced Howland Current source Schematic.

Figure 4:

Instrumentation Amplifier Schematic.
Instrumentation Amplifier Schematic.

Figure 5:

DC simulation results for the low power supply design.
DC simulation results for the low power supply design.

Figure 6:

Output impedance versus frequency in AC analysis.
Output impedance versus frequency in AC analysis.

Figure 7:

Simulation vs test output current comparison for 2 : kHz rectangle wave.
Simulation vs test output current comparison for 2 : kHz rectangle wave.

Figure 8:

Simulation vs test output current comparison for 1 MHz rectangle wave.
Simulation vs test output current comparison for 1 MHz rectangle wave.

Figure 9:

Instrumentation amplifier test with a 1 KΩ impedance for a 100 kHz rectangle wave.
Instrumentation amplifier test with a 1 KΩ impedance for a 100 kHz rectangle wave.

Figure 10:

Instrumentation amplifier test with a Cole impedance for a 100 kHz rectangle wave.
Instrumentation amplifier test with a Cole impedance for a 100 kHz rectangle wave.

Figure 11:

Shrink prototype (A) top view and (B) bottom view.
Shrink prototype (A) top view and (B) bottom view.

CC output current (in μA) considering temperature and voltage supply corners_

Topology Iout (0<T<100°C) Iout (1.8<VCC<3.3V)
EHCS 250.118 to 250.121 249.97 to 250.12
Language:
English
Publication timeframe:
1 times per year
Journal Subjects:
Engineering, Bioengineering and Biomedical Engineering, Biomedical Electronics, Life Sciences, Biophysics, Medicine, Biomedical Engineering, Physics, Spectroscopy and Metrology
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