[Interface de communication]:trou de tampon
[Puissance de transmission]:37 dBm
[Distance de communication]: 20 km
[Gain de réception]:15 dBm
[Introduction]:E21-230G37S est un amplificateur de puissance moyenne (PA) RF purement matériel avec une puissance de sortie maximale de 37 dBm et une plage de fréquences de couverture de 220 à 236 MHz. Amplificateur à faible bruit LNA intégré, utilisant une puce PA de haute qualité + un schéma de conception unique, améliore considérablement l'efficacité de travail du PA et peut transmettre en continu des données à une température ambiante de -40 à +85 degrés. Filtre intégré, dispositif limiteur, faible coefficient de bruit, améliore la sensibilité de réception du canal de réception et étend la distance de communication.
| Pin number | Pin name | Pin direction | Pin usage |
| 1 | GND | - | Ground wire, connected to the reference ground |
| 2 | +7.5V | - | PA drive power supply VCC1 |
| 3 | +7.5V | - | PA drive power supply VCC1 |
| 4 | GND | - | Ground wire, connected to the reference ground |
| 5 | +5V | - | Control power supply VCC2 |
| 6 | GND | - | Ground wire, connected to the reference ground |
| 7 | TXEN | enter | Transmit mode enabled, active at high level (supports 3.3V/5V level) |
| 8 | RXEN | enter | Receive mode enabled, active at high level (supports 3.3V/5V level) |
| 9 | GND | - | Ground wire, connected to the reference ground |
| 10 | PIN | input/output | Transmitting mode: RF signal input/receiving mode: RF signal output |
| 11 | PoUT | Output/Input | Transmitting mode: RF signal output/receiving mode: RF signal input |
| 12 | GND | - | Ground wire, connected to the reference ground |
| 13 | GND | - | Ground wire, connected to the reference ground |
| 14 | GND | - | Ground wire, connected to the reference ground |
| 15 | GND | - | Ground wire, connected to the reference ground |
| 16 | GND | - | Ground wire, connected to the reference ground |
| 17 | GND | - | Bottom heat dissipation pad, connect module GND |
Note: 1. TXEN and RXEN cannot be opened at the same time at any time. Opening them at the same time may cause direct damage to the PA module. 2. The bottom pad is connected to the internal GND and needs to be coated with silicone grease for heat dissipation or soldered to the bottom board to enhance heat dissipation. | |||