SI4432-B1-FM Wireless & RF Integrated Circuits RF Transceiver
Frequency Range
240–930 MHz (Si4431/32)
900–960 MHz (Si4430)
Sensitivity = –121 dBm
Output power range
+20 dBm Max (Si4432)
+13 dBm Max (Si4430/31)
Low Power Consumption
18.5 mA receive
30 mA @ +13 dBm transmit
85 mA @ +20 dBm transmit
Data Rate = 0.123 to 256 kbps
FSK, GFSK, and OOK modulation
Power Supply = 1.8 to 3.6 V Ultra low power shutdown mode
Digital RSSI
Wake-up timer
Auto-frequency calibration (AFC)
Power-on-reset (POR)
Antenna diversity and TR switch control
Configurable packet handler
Preamble detector
TX and RX 64 byte FIFOs
Low battery detector
Temperature sensor and 8-bit ADC
–40 to +85 °C temperature range
Integrated voltage regulators
Frequency hopping capability
On-chip crystal tuning
