Chengdu Ebyte Electronic Technology Co., Ltd. E77-xxxM22S User Manual
Copyright © 2012-2 024 , Chengdu Ebyte Electronic Technology Co., Ltd.
2.4 Parameter description
When designing the power supply circuit for the module, it is often recommended to reserve more than 30% margin,
so that the whole machine can work stably for a long time;
The current required at the moment of emission is relatively large, but because the emission time is extremely short,
the total energy consumed may be smaller;
When customers use an external antenna, the different impedance matching degrees between the antenna and the
module at different frequencies will affect the emission current to varying degrees;
The current consumed when the RF chip is in a pure receiving state is called receiving current. Some RF chips with
communication protocols or developers have loaded some self-developed protocols on the whole machine, which
may cause the tested receiving current to be too large;
The shutdown current is often much smaller than the current consumed by the power supply part of the whole
machine when it is no-load, so there is no need to be too demanding;
Since the material itself has certain errors, a single LRC component has an error of ±0.1%. However, if multiple
LRC components are used in the entire RF circuit, errors will accumulate, resulting in differences in the
transmitting current and receiving current of different modules;
Reducing the transmit power can reduce power consumption to a certain extent, but due to many reasons, reducing
the transmit power will reduce the efficiency of the internal PA.
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