E21-230G37S Power amplifier PA module second harmonic and power Long-distance communication LNA low noise amplifier
[Communication interface]：stamp hole
[Transmitting power]：37dBm
[Communication distance]： 20km
[Receive gain]：15dBm
[Introduction]：E21-230G37S is a pure hardware RF medium power amplifier (PA) with a maximum output power of 37dBm and a frequency range of 220 to 236MHz. It has a built-in LNA low noise amplifier and uses high-quality PA chips + unique design solutions to greatly improve PA working efficiency and enable continuous data transmission at an ambient temperature of -40 to +85 degrees. It has built-in filters, limiters, and low noise coefficients to improve the receiving channel's receiving sensitivity and extend the communication distance.
Official Store| Main parameters | performance | Remark | |||
| minimum value | Typical value | maximum value | |||
| Power supply voltage(V) | 4.5 | 5 | 5.5 | ≥ 4.7V guaranteed output power | |
| PA control voltage (V) | 7 | 7.5 | 8 | It is recommended to use 7.5V to ensure the best performance | |
| Working temperature (℃) | -40 | 25 | +85 | Industrial grade design | |
| Working frequency band (MHEz) | 220 | - | 236 | The default frequency band is 230MHz, | |
| Power consumption | Emission current (mA) | 1200 | 1300 | 1400 | Instantaneous power 37dBm (power supply voltage 5V, PA voltage 7.5V test) |
| Receive current (mA) | 6.5 | 8 | -100dBm input current 8mA | ||
| Sleep current (uA) | 3.0 | T/RX_EN = or | |||
| Maximum transmit power (dBm) | 36 | 37 | 38 | The input power of the front stage is greater than 17dEm to ensure full power output. | |
| Receive gain (dBm) | 14 | 1 5 | 17 | -100dBm input | |
| Transmission gain (dB) | 30 | 32 | 34 | 前级输入 5dBm 模The front-end input 5dBm module can stably output 37dBm. | |
| Main parameters | describe | Remark |
| reference distance | 20Km | In a clear and open environment, the antenna gain is 5dBi, the antenna height is 2 meters, and the air rate is 2.4kbps. |
| Packaging method | SMD type | / |
| Interface mode | 1.5mm | stamp hole |
| Overall dimensions | 45*30mm | l |
| RF input and output interface | stamp hole | Equivalent impedance is about 50 Ω |
| Main parameters | performance | Remark | |
| minimum value | maximum value | ||
| Power supply voltage(V) | 4.5 | 5.5 | Exceeding 6V will permanently burn the module |
| PA drive voltage (V) | 7 | 8 | Default 7.5V power supply can output full power |
| Blocking power (dBm) | - | 10dbm | High-power modules are more likely to be burned when used at close range |
| Working temperature (℃ ) | -40 | +85 | Industrial grade |