Medical Design Briefs - September 2021 - 17

Time (Seconds)
START
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10
(ACMP0 PWR_ON)
Delayed ACMP0 output
(ACMP1 PWR_ON)
Delayed ACMP1 output
(ACMP2 PWR_ON)
Delayed ACMP2 output
(ACMP3 PWR_ON)
Delayed ACMP3 OUTPUT
5s DLY OUTPUT
Pin3
(Very Low Glucose LED)
Pin4
(Low Glucose LED)
Pin5
(Normal Glucose LED)
Pin10
(High Glucose LED)
Pin18
(Very High Glucose LED)
nRESET
(This section not to scale)
Fig. 5 - System signals when ANALOG_IN ≥400 mV.
or 3-bit. These LUTs resolve which LED
should be lit to indicate the level of
glucose.
When the START signal goes LOW, a
short reset pulse is triggered using the
PDLY as a falling edge detector along
with inverter FILTER0. This short,
active- low pulse will reset the four DFFs.
This reset will consequently power off all
of the ACMPs and ready the system to
take another reading. Figures 4 and 5
illustrate timing diagrams. Compared to
a typical glucometer, this GreenPAKbased
glucometer is smaller, less expensive,
and more energy efficient. The
design could easily be modified for
patients with Type 1 or Type 2 diabetes.
Conclusion
In this article, Dialog GreenPAK
SLG46580V and SLG88104V were used
to develop a custom glucometer. The
concepts used in the article could be
modified to fit other medical applications.
Thanks to their small size and
low energy consumption, theses products
make it possible for this design to be
portable and energy efficient.
This article was provided by Dialog
Semiconductor, Reading, UK. This design
was created in GUI-based GreenPAK Designer
software. The IC design file can be downloaded
free. For more information and to
download the software, visit http://info.
hotims.com/79417-343.
Medical Design Briefs, September 2021
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Medical Design Briefs - September 2021

Table of Contents for the Digital Edition of Medical Design Briefs - September 2021

Medical Design Briefs - September 2021 - Intro
Medical Design Briefs - September 2021 - Cov3
Medical Design Briefs - September 2021 - Cov1a
Medical Design Briefs - September 2021 - Cov1b
Medical Design Briefs - September 2021 - Cov1
Medical Design Briefs - September 2021 - Cov2
Medical Design Briefs - September 2021 - 1
Medical Design Briefs - September 2021 - 2
Medical Design Briefs - September 2021 - 3
Medical Design Briefs - September 2021 - 4
Medical Design Briefs - September 2021 - 5
Medical Design Briefs - September 2021 - 6
Medical Design Briefs - September 2021 - 7
Medical Design Briefs - September 2021 - 8
Medical Design Briefs - September 2021 - 9
Medical Design Briefs - September 2021 - 10
Medical Design Briefs - September 2021 - 11
Medical Design Briefs - September 2021 - 12
Medical Design Briefs - September 2021 - 13
Medical Design Briefs - September 2021 - 14
Medical Design Briefs - September 2021 - 15
Medical Design Briefs - September 2021 - 16
Medical Design Briefs - September 2021 - 17
Medical Design Briefs - September 2021 - 18
Medical Design Briefs - September 2021 - 19
Medical Design Briefs - September 2021 - 20
Medical Design Briefs - September 2021 - 21
Medical Design Briefs - September 2021 - 22
Medical Design Briefs - September 2021 - 23
Medical Design Briefs - September 2021 - 24
Medical Design Briefs - September 2021 - 25
Medical Design Briefs - September 2021 - 26
Medical Design Briefs - September 2021 - 27
Medical Design Briefs - September 2021 - 28
Medical Design Briefs - September 2021 - 29
Medical Design Briefs - September 2021 - 30
Medical Design Briefs - September 2021 - 31
Medical Design Briefs - September 2021 - 32
Medical Design Briefs - September 2021 - 33
Medical Design Briefs - September 2021 - 34
Medical Design Briefs - September 2021 - 35
Medical Design Briefs - September 2021 - 36
Medical Design Briefs - September 2021 - 37
Medical Design Briefs - September 2021 - 38
Medical Design Briefs - September 2021 - 39
Medical Design Briefs - September 2021 - 40
Medical Design Briefs - September 2021 - 41
Medical Design Briefs - September 2021 - 42
Medical Design Briefs - September 2021 - Cov3
Medical Design Briefs - September 2021 - Cov4
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