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In addition to the decoupling capacitors above, we also
highly recommend
a
feed-through capacitor prior to decoupling to further clean up the supply voltage.
Example Feed-Through Capacitor
TDK:
YFF31HC2A105MT000N
5.3 Input Voltage Examples
The Modem can be supplied via linear or switching regulator depending on the user's
requirements. The Modem has an on-board boost regulator with an input voltage range of 3.0V
to 5.0V. Most customers are operating remotely and use switching regulators for high efficiency
and battery applications. We have provided example parts below. The customer can use these
as a baseline for starting their own designs using other suppliers.
© 2022 SWARM TECHNOLOGIES
SWARM M138 MODEM PRODUCT MANUAL · REV 1.20 · FEBRUARY 2022
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