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5
1.4. E73 (2G4M04S1D)
Parameter
Min
Typ
Max
Unit
Transmitting current
13.0
14.0
15.4
mA
Receiving current
11.3
12.6
13.8
mA
Turn-off current
0.5
1.0
2.5
μA
Transmitting power
3.6
4.0
4.5
dBm
Receiving sensitivity
-95.4
-96.0
-96.8
dBm
Recommended band
2379
2430
2496
MHz
Voltage supply
2.1
3.3
3.6
V
Communication level
2.1
3.3
3.6
V
1.5. E73(2G4M08S1C)
Parameter
Condition
Min
Typ
Max
Unit
Transmitting current
TX only run current (DC/DC, 3 V) P
RF
= +8 dBm
17.05
mA
TX only run current (DC/DC, 3 V) P
RF
= +4 dBm
12.68
TX only run current (DC/DC, 5 V, REG0 out = 3.3 V)P
RF
= 0dBm
7.25
TX only run current (DC/DC, 3 V)P RF = 0 dBm
7.63
Receiving current
RX only run current (DC/DC, 3 V) 1 Mbps / 1 Mbps BLE
7.71
mA
RX only run current (DC/DC, 3 V) 2 Mbps / 2 Mbps BLE
8.27
Transmitting power
-
7
dBm
Receiving sensitivity
-
-103 dBm@BLE 125kbps（long distance mode）、 -95 dBm@BLE 1M
dBm
Recommended band
-
2360
2402
24500
MHz
Voltage supply
-
1.7
3.3
5.5
V
Communication level
-
0.7 X VDD
VDD
V
Note: The current is the current of the whole machine. 64 MHz CPU clock, 52 μA/MHz running from flash memory.
1.6. Parameter notes
1
When designing current supply circuit, 30% margin is recommended to be remained so as to ensure long-term stable operation of
the whole module.
2.
The current at the instant of transmitting may be high, but the total energy consumed may be lower due to very short transmitting
time.
3.
When using external antenna, the impedance matching degree at different frequency points between antenna and module may
affect the transmitting current at different levels.
4.
The current consumed when the RF chip is only working at receiving mode is called as receiving current. The tested receiving current
may be higher for some RF chips with communication protocol or when the developers have loaded their own protocol to the whole
module.
5.
The current at pure receiving mode is at mA level. To achieve µA level receiving current, the users need to manage it through
firmware development.
6.
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.
7.
Each LRC component has ±0.1% error, and the error will accumulate since multiple LRC components are used in the whole RF circuit,
and the transmitting current will be different at different modules.
8.
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