Specifications

SHENZHEN B&T TECHNOLOGY Co., Ltd ZHONGSHAN B&T TECHNOLOGY Co., Ltd
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Scheme two: put the module on the edge of the motherboard, the edge of the
motherboard in the antenna position empty an area.
(2)、 in order to meet the performance of on-board antenna, it is forbidden to
place metal parts around the antenna, away from high-frequency components..
4. power supply
(1)、 Recommended 3.3 V voltage, peak currentabove500 mA
(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
5.GPIO port use
(1)、 module periphery have lead some GPIO interfaces, if you need to use,it
is recommended the resistance of 10-100 ohms in series on the IO port. This can