RF4438PRO 433MHz Embedded SPI Interface Wireless Transceiver Module

Item Overview: The RF4438PRO module uses the Silicon Lab Si4438-C device, a highly integrated wireless ISM band transceiver chip. Extremely low receive sensitivity (-124 dBm) combined with industry-leading output power of +20 dBm, ensures extended range and improved link performance. At the same time, built-in antenna diversity and support for frequency hopping can be used to further expand the range and improve performance. Specifications: Frequency range: 433 (customizable 425-525MHZ) Power supply: 1.8-3.8 V Operating temperature range: -40 ~ +85 C Sensitivity: up to -124dBm Maximum output power: 20dBm (14mA@receiver status) Data transfer rate: 0.1-500kbps (FSK modulation mode) Features: - Ultra low power shutdown mode - Digital Received Signal Strength Indicator (RSSI) - Timed wake-up function, frequency hopping function, power-on reset function, built-in crystal adjustment function - Antenna automatic matching and bidirectional switch control, - Pre-sync signal detection, low power detection - 64-byte Transceiver Data Register (FIFO) configurable packet structure - Temperature sensing and 8-bit analog-to-digital converter with integrated voltage regulator Technical Parameters: Parameter Minimum Typical maximum Unit Condition Operating conditions Operating Voltage 1.8 3.3 3.8 V Operating temperature -40 85 Current consumption Receiving current 14 mA Low power mode Emission current 85 mA @20dBm Sleep current