Specifications

Ra-01SH Specification V1.1
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第 14 页 共 17 页
（
1
）、
Ra-01SH needs to be used for soldering antennas, and the module is compatible
with half-hole pads and round-hole pads.
（
2
）、
In order to achieve the best effect of the antenna, the antenna assembly location
should be far away from the metal parts.
4
、
Power supply
（
1
）、
Recommended 3.3V voltage, peak current recommended above 200mA
（
2
）、
It is recommended to use LDO for power supply; if DC-DC is used, the ripple is
recommended to be controlled within 30mV.
（
3
）、
It is recommended to reserve the position of the dynamic response capacitor for
the DC-DC power supply circuit, which can optimize the output ripple when the load
changes greatly.
（
4
）、
It is recommended to add ESD devices to the 3.3V power interface.
。