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Tags: SI4432 915MHZ, transmitter module, wireless module
Description:The Si4432/31 offers advanced radio features, including continuous frequency coverage from 240–930 MHz and adjustable output power of up to +20 dBm with the Si4432. The Si4430 offers frequency coverage from 900 to 960 MHz to support the Japanese frequency bands. The Si4432/31/30’s high level of integration offers reduced BOM cost while simplifying overall system design. The extremely low receive sensitivity (–118 dBm) coupled with the Si4432’s industry-leading +20 dBm output power ensures extended range and improved link performance. Built-in antenna diversity and support for frequency hopping can be used to further extend range and enhance performance. Antenna diversity is completely integrated into the Si443x and can improve the system link budget by 8–10 dB, resulting in substantial range increases under adverse environmental conditions.
Application:Remote controlHome security and alarmTelemetryToy controlRemote meter readingRemote keyless entryHome automationIndustrial controlSensor networksHealth monitorsTag readers
Features:Module frequency band: 915MHzSensitivity: Up to -120~-121dBm (1.2Kbps)Maximum output power of wireless transmission: 20dBm (1.2Kbps, 433M)Data transmission rate: 0.123-256kbpsModulation mode: FSK, GFSK and OOKPower supply: 1.8-3.6 VUltra low power consumption is 10nA (4.21ms) in power down mode, 300nA in standby mode, 600nA (1.21ms) in sleep mode, 18.5mA in receiving current, and 80mA (200us) in maximum emission current.Digital Received Signal Strength Indicator (RSSI)Timing wake-up function, wireless wake-up function (WUT)Automatic Antenna Matching and Bidirectional Switch ControlConfigurable packet structurePre-sync signal detection64 bytes send and receive data register (FIFO)On-chip integrated low battery detectionOn-chip temperature sensor and 8-bit ADCOperating temperature range: -40 ~ +80 °C (temperature characteristics and product consistency is much better!)Integrated voltage regulatorFrequency hopping functionPower on reset functionBuilt-in crystal error adjustment functionThe chip automatically calculates and verifies CRC-16 and supports three 16-bit CRC polynomials.A header of up to 4 bytes is available. Use the header filter on the receiving side to set up reception by address.
SI4432 chip datasheet
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