RC11xx(HP)-TM
RC25xx(HP)-TM
RC17xx(HP)-TM
2016 Radiocrafts AS
RC11xx(HP)/25xx(HP)/17xx(HP)-TM Data Sheet rev. 1.48 Page 83 of 86
2016 Tiny Mesh AS
Radiocrafts
Embedded Wireless Solutions
Power Supply
Noisy external circuitry may under certain scenarios affect the TX signal, and precaution should be
taken for EU R&TTE conformity. Example of circuits that may generate noise on the transmitted
spectrum may be DC/DC converters and some level converters like RS232 and RS485. To increase
spectrum margin it is important to add an EMI filter bead on the VCC pin of the module. Alternatively the
module may be powered form a separate voltage regulator. This will ensure that potential switching
noise is filtered out from the power supply to the module. A block diagram of a typical PC serial port
interface is illustrated below.
Component
Manufacturer
Part number
EMI filter bead
Murata
BLM11A102S, ordering code
BLM18xx102xN1D
For High Power versions of modules use
BLM18SG331TN1