Specifications

3.3
Module electrical parameters
parameter minimum
value
Typica
l value
Maxi
mum
Com
pany
VDD 2.2 3.3 3.6
V
Distribution
network
current
- 120 - mA
Working
electric
current
- 55 -
Standby
current
- 23 -
4.Reference application and PCB layout
4.1Application schematic reference
4.2PCB layout reference
4.2.1 Keep clearance at the module antenna
4.2.2 The module is far away from strong interference sources
4.2.3 The capacitance shall be increased at the power supply, and the wiring shall be short and
thick
4.2.4 The module can be pasted on the PCB board or welded on the PCB board with 2.0 rows of pins
4.2.5 PCB can use on-board antenna or IPEX base to connect external antenna (as shown below). This version is
on-board antenna
  Onboard antenna: R8 (0r) / R9 (NC)
  PEX sub external antenna: R8 (NC) / R9 (0r)