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HOME > PRODUCTS > FSK FRONT-END MODULES > RF4438PRO : SI4438 433MHZ 100MW FRONT-END RF MODUL...
RF4438PRO : Si4438 433MHz 100mW Front-End RF Module
- 433MHz RF module RF4438PRO adopts Silicon Lab EzradioPro2 RF transceiver si4438, which is a highly integrated wireless ISM band transceiver chip. The features of high sensitivity (-124 dBm), +20 dBm output power, low current consumption, 10PPM crystal, and good RF matching circuit make this module work well in hot/cold environment with reliable communication and long distance.
- RF4438PRO is manufactured and tested strictly using lead-free process and complies with RoHS and Reach standards.
| Parameter | Min | Typ | Max | Unit | Condition |
| Working Condition | |||||
| Working voltage range | 1.8 | 3.3 | 3.8 | V | |
| Temperature voltage | -40 | 85 | ℃ | ||
| Current Consumption | |||||
| Receiving current | 14 | mA | |||
| Transmitting current | 85 | mA | @20dBm | ||
| Sleep current | < 0.1 | uA | |||
| Parameter | |||||
| Frequency range | 425 | 433 | 463 | MHz | @433MHz |
| 470 | 490 | 510 | MHz | @470MHz | |
| Modulation rate | 0.1 | 500 | Kbps | FSK | |
| Output power range | -20 | 20 | dBm | ||
| Receiving sensitivity | -124 | dBm | @data=500bps | ||
| Modulation | (G)FSK |
| Chip | si4438 |
| Frequency | 433MHz |
| Output Power | 100mW |
| Interface | SPI |
Features of 433MHz RF Module RF4438PRO
- Frequency:433MHz(customizable 425-525MHz)
- High Sensitivity up to -124dBm
- Max output power：20dBm
- 14mA @ receiver mode
- Data transfer rate：0.1-500Kbps
- (G)FSK, OOK Modulation mode
- 1.8-3.8 V Power supply
- Ultra-low consumption shutdown mode
- Digital received signal strength indicator (RSSI)
- Timed wake-up function
- Excellent antenna match circuit and bi-direction communication
- Configurable packet structure
- Preamble detection
- 64/128byte transmit and receive data register（FiFo）
- Low-battery detection
- Temperature sensor and 8-bit analog-to-digital converters
- Operating Temperature Range：-40 ~ + 85 °C
- Integrated voltage regulator
- Frequency hopping
- Power-on reset function
- Built-in crystal adjustment function
Applications of 433MHz RF Module RF4438PRO
- Remote control
- Remote meter reading
- Home security alarm and remote keyless entry
- Industrial control
- Home automation remote sensing
- Individual data records
- Toys control
- Sensor network
- Tire pressure monitoring
- Health monitoring
- Wireless PC peripherals
- Tag reading and writing
| Pin NO. | Pin Name | Description |
| 1 | GND | Power ground |
| 2 | NC | NC |
| 3 | GPIO0 | GPIO0 of Si4468 |
| 4 | GPIO1 | GPIO1 of Si4468 |
| 5 | VCC | Positive power supply 3.3V |
| 6 | SDO | Serial data out for SPI interface. |
| 7 | SDI | Serial data in for SPI interface |
| 8 | SCLK | Serial data clock for SPI interface |
| 9 | nSEL | Serial data selection for SPI interfaces. |
| 10 | nIRQ | Interrupt output |
| 11 | SDN | Power down control. SDN = 1, power down SDN = 0, normal working |
| 12 | GND | Power ground |
| 13 | GND | power ground |
| 14 | ANT | Connect with 50 ohm coaxial antenna |
