V-Chip Microsystems VT-SX1278-433M, Руководство пользователя

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COPYRIGHT @ 2016 Shenzhen V-CHIP MICROSYSTEMS Co. Ltd v1.0.0
VT-SX1278-433M
General Characteristics
Test operating conditions
：
Ta=25°C
，
VCC=3.3V if nothing else stated.
Parameter Type Condition/Note
Operating supply voltage DC 1.8
～
3.7V
Central frequency 433MHz
Can be programmable to other frequency in bands
410~525MHz
Frequency accuracy ±10KHz
Modulation format FSK/OOK/LORA Programmable
Transmit power -2
～
+20dBm Programmable
TX current consumption <140mA Po=20dBm
Receiver sensitivity -110dBm @LoRa
，
SF=12
，
BW=7.8kHz
RX current consumption <14mA
Sleep State current consumption <1uA Refer to IC operation states
Data rate 0.018kbps~300kbps Programmable
Spurious emissions and harmonics < -30dBm TX power +20dBm.
Communication distance >3000m 0.8kBaud data rata, +20dBm output power.
Antenna impedance 50ohm
Operating temperature -20
～
+85 °C
Storage temperature range -50
～
+125°C
Dimension 20.5
×
15.5
×
2.0mm See more in PCB description
Note
：
1
．
The module transmission data rate will affect Transmission distance ,the higher the data rate , the closer the
distance, and the lower the receiving sensitivity.
2
．
The supply voltage to the module will affect TX power, in the operating supply voltage range, the lower the
voltage, the lower the TX power.
3
．
The module central frequency will change as the operating temperature change, use it under suggest temperature,
the module can work well.
4
．
The antenna will strongly affect the communication distance, please select matched antenna and connect it
correctly.
5
．
The module mount will affect the communication distance.