9
Item
Pin
Min
Typical
Max
Unit
Condition
LOW Level Output Voltage
Vout_low
0
0.45
V
Iout= 4 mA
High Level Output Voltage
Vout_high
2.85
3.3
V
Iout =4 mA
Antenna Gain
Gant
20
36
dB
Power Consumption
P
2.3
2.6
W
2.6
Physical Specifications
Table 2-5 Physical Specifications
Temperature
Operating: -40
℃
～
+85
℃
Storage: -55
℃
～
+95
℃
Humidity
95% No condensation
Vibration
GJB150.16-2009, MIL-STD-810
Shock
GJB150.18-2009, MIL-STD-810
3
Hardware Design
3.1
Design in Considerations
⚫
The module VCC power-on behavior is repeatable. The initial level is lower
than 0.4V, and the undershoot and ringing should be guaranteed to be
within 5% VCC
⚫
ANT1 and ANT2 MMCX interfaces supply DC 4.8~5.4 V feed in no-load
condition, and supply DC 4.6V±0.2V feed when the working circuit is
tested 30~100mA in room temperature. Fifty (50) ohm impedance
matching for ANT1 and ANT2 is strongly recommended
⚫
Supply stable power to the VCC pin. Connect all the GND pins to ground
⚫
Ensure COM1 is connected to the host. COM1 is required for firmware
upgrades.
⚫
FRESET_N resets the factory settings for the board. RESETIN is fast reset;
please ensure the board is connected correctly to reset the board.
In order to obtain proper performance, special concerns should be paid during the
design to the following:
⚫
Power supply: A stable and low ripple power supply is necessary for good
performance. Make sure the peak to peak voltage ripple does not exceed
50mVpp. It is recommended to use a power chip with current output
capacity greater than 2A to power the board.
−
Use LDO to ensure the purity of the power supply
−
Try to place LDO close to the module in layout
−
Widen the tracks of power circuit or use copper pour surface to
transmit current
