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Wireless UART Module
2.1 Electrical Parameters
2.1.1 E61-TTL-50
Parameter
Transmitting current
Receiving current
Turn-off current
Transmitting power
Receiving sensitivity
Recommended frequency
Voltage supply
Communication level
2.1.2 E61-TTL-1W
Parameter
Transmitting current
Receiving current
Turn-off current
Transmitting power
Receiving sensitivity
Recommended frequency
Voltage supply
Communication level
2.3 Parameters Notes
When designing current supply circuit, 30% margin is recommended to be remained so as to ensure long-term stable operation of
l
the whole module.
The current at the instant of transmitting may be high, but the total energy consumed may be lower due to very short transmitting
l
time.
When using external antenna, the impedance matching degree at different frequency points between antenna and module may
l
affect the transmitting current at different levels.
The current consumed when the RF chip is only working at receiving mode is called as receiving current. The tested receiving current
l
may be higher for some RF chips with communication protocol or when the developers have loaded their own protocol to the whole
module.
The current at pure receiving mode is at mA level. To achieve µA level receiving current, the users need to manage it through
l
firmware development.
The turn-off current is always lower than the current consumed when the power supply source of the whole module is at no-load
l
status.
Each LRC component has ±0.1% error, and the error will accumulate since multiple LRC components are used in the whole RF circuit,
l
and the transmitting current will be different at different modules.
The power consumption can be lowered by lowering the transmitting power, but the efficiency of the internal PA will be decreased
l
by lowering transmitting power due to various reasons.
Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd.
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User Manual of E61 Series Modules
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Unit
mA
mA
μA
dBm
dBm
MHz
V
V
Unit
mA
mA
μA
dBm
dBm
MHz
V
V
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