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SX127X RF Module
1.2.3 Turn-off current
Model No.
Min
E19 (433M20SC)
0.5
E19 (433M20S2)
0.5
E19 (433M30S)
1.5
E19 (868M20S)
0.5
E19 (868M30S)
1.5
E19 (915M20S)
0.5
E19 (915M30S)
1.5
1.2.4 Supply voltage
Model No.
Min
E19 (433M20SC)
1.8
E19 (433M20S2)
1.8
E19 (433M30S)
3.3
E19 (868M20S)
1.8
E19 (868M30S)
3.3
E19 (915M20S)
1.8
E19 (915M30S)
3.3
1.2.5 Communication level
Model No.
Min
E19 (433M20SC)
1.8
E19 (433M20S2)
1.8
E19 (433M30S)
3.3
E19 (868M20S)
1.8
E19 (868M30S)
3.3
E19 (915M20S)
1.8
E19 (915M30S)
3.3
1.3 RF parameters
1.3.1 Transmitting Power
Model No.
Min
E19 (433M20SC)
19
E19 (433M20S2)
19
E19 (433M30S)
28.5
E19 (868M20S)
19
E19 (868M30S)
28.5
E19 (915M20S)
19
E19 (915M30S)
28.5
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Typ
Max
Unit
1.0
2.5
µA
1.0
2.5
µA
3.0
4.5
µA
1.0
2.5
µA
3.0
4.5
µA
1.0
2.5
µA
3.0
4.5
µA
Typ
Max
Unit
3.3
3.6
V DC
3.3
3.6
V DC
5.0
5.5
V DC
3.3
3.6
V DC
5.0
5.5
V DC
3.3
3.6
V DC
5.0
5.5
V DC
Typ
Max
Unit
3.3
3.6
V DC
3.3
3.6
V DC
5.0
5.5
V DC
3.3
3.6
V DC
5.0
5.5
V DC
3.3
3.6
V DC
5.0
5.5
V DC
Typ
Max
Unit
20
20.5
dBm
20
20.7
dBm
30
30
dBm
20
20.4
dBm
30
30
dBm
20
20.6
dBm
30
30
dBm
Remark
The turn-off current means the current consumed when
●
CPU, RAM, Clock and some registers remain operating while
SoC is at very low power consumption status.
● The turn-off current is always lower than the current
consumed when the power supply source of the whole
module is at no-load status.
Remark
● If the voltage is at maximum value for long time, the
module may be damaged;
● The power supply pin has certain surge-resistance ability,
but the potential pulse higher than the maximum power
supply voltage;
● The power supply voltage is recommended to be higher
than 3.0V, if the voltage is lower than 3.0V, the RF
parameters will be affected at different degrees.
Remark
● If the communication level is higher than the allowed
maximum value, the module may be damaged;
● Although the communication level can be switched with
various methods, the power consumption of the whole
module will be affected at great degree.
Remark
Due to the error of the materials, each LRC component
●
has ±0.1% error, so error accumulation will occur since
multiple LRC components are used in the whole RF circuit,
and the transmitting currents will be different;
● The power consumption can be lowered by lowering
the transmitting power, but the efficiency of the internal PA
will be decreased by lowering transmitting power due to
various reasons;
● The transmitting power will be lowered by lowering the
power supply voltage.
User Manual of E19 Series Modules
4
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