SI4431-A0-FM Silicon Laboratories Inc, SI4431-A0-FM Datasheet - Page 146

• Manufacturer Part Number: SI4431-A0-FM
• Description: IC TXRX ISM 930MHZ 3.6V 20-QFN
• Manufacturer: Silicon Laboratories Inc

Specifications of SI4431-A0-FM

• Package / Case: 20-QFN
• Mfg Application Notes: Transitioning SI4430/31 to Rev B
• Frequency: 240MHz ~ 930MHz
• Data Rate - Maximum: 128kbps
• Modulation Or Protocol: FSK, GFSK, OOK
• Power - Output: 13dBm
• Sensitivity: -118dBm
• Voltage - Supply: 1.8 V ~ 3.6 V
• Current - Receiving: 18.5mA
• Current - Transmitting: 28mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Number Of Receivers: 2
• Number Of Transmitters: 1
• Wireless Frequency: 240 MHz to 930 MHz
• Output Power: 13 dBm
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Maximum Supply Current: 28 mA
• Minimum Operating Temperature: - 40 C
• Modulation: FSK, GFSK, OOK
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Applications: -
• Memory Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 336-1633-5

Register 6Dh. TX Power
Register 6Eh. TX Data Rate 1
Si4431
Reset value = xxxx1000
Reset value = 00001010
The data rate can be calculated as: TX_DR = 10
The data rate can be calculated as: TX_DR = 10
146
Name
Name
Type
Type
Bit
Bit
7:4
2:0
7:0
Bit
Bit
3
txpow[2:0]
Reserved
txdr[15:8]
lna_sw
Name
Name
D7
D7
Reserved.
LNA Switch Controller.
If set, lna_sw control from the digital will go high during TX modes, and low during other
times. If reset, the digital control signal is low at all times.
TX Output Power.
The output power is configurable from –8 dBm to +13 dBm in ~3 dBm steps.
txpow[2:0] = 111 corresponds to +13 dBm and 000 to –8 dBm.
Data Rate Upper Byte.
See formula above.
D6
D6
Reserved
R
D5
D5
Preliminary Rev. 0.4
3
3
x txdr[15:0] / 2
x txdr[15:0] / 2
D4
D4
txdr[15:8]
R/W
Function
Function
16
21
lna_sw
R/W
D3
D3
[kbps] (if address 70[5] = 0) or
[kbps] (if address 70[5] = 1)
D2
D2
txpow[2:0]
R/W
D1
D1
D0
D0