SI4432 Wireless Transceiver Module 915MHz Frequency

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 control
Home security and alarm
Telemetry
Toy control
Remote meter reading
Remote keyless entry
Home automation
Industrial control
Sensor networks
Health monitors
Tag readers

Features:
Module frequency band: 915MHz
Sensitivity: Up to -120~-121dBm (1.2Kbps)
Maximum output power of wireless transmission: 20dBm (1.2Kbps, 433M)
Data transmission rate: 0.123-256kbps
Modulation mode: FSK, GFSK and OOK
Power supply: 1.8-3.6 V
Ultra 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 Control
Configurable packet structurePre-sync signal detection
64 bytes send and receive data register (FIFO)
On-chip integrated low battery detection
On-chip temperature sensor and 8-bit ADC
Operating temperature range: -40 ~ +80 °C (temperature characteristics and product consistency is much better!)
Integrated voltage regulator
Frequency hopping function
Power on reset function
Built-in crystal error adjustment function
The 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