SI4431-A0-FM Silicon Laboratories Inc, SI4431-A0-FM Datasheet - Page 140

• 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 61h. Channel Filter Coefficient Value
Register 62h. Crystal Oscillator/Power-on-Reset Control
Si4431
Reset value = 00000000
Reset value = xxx00100
140
Name
Name
Type
Type
Bit
Bit
7:6
5:0
7:5
Bit
Bit
4
3
2
1
0
chfilval[5:0]
Reserved
enamp2x
pwst[2:0]
enbias2x
clkhyst
Name
Name
bufovr
D7
D7
enbuf
Reserved
R/W
pwst[2:0]
Reserved.
Filter Coefficient Value in the Look-up Table Addressed by the chfiladd[3:0].
Internal Power States of the Chip.
LP:
RDY:
Tune: 011
TX:
RX:
Clock Hysteresis Setting.
2 Times Higher Bias Current Enable.
2 Times Higher Amplification Enable.
Output Buffer Enable Override.
If set to 1 then the enbuf bit controls the output buffer.
0: output buffer is controlled by the state machine.
1: output buffer is controlled by the enbuf bit.
Output Buffer Enable.
This bit is active only if the bufovr bit is set to 1.
D6
D6
R
000
001
010
111
D5
D5
Preliminary Rev. 0.4
clkhyst
R/W
D4
D4
enbias2x
Function
Function
R/W
D3
D3
chfilval[5:0]
R/W
enamp2x
R/W
D2
D2
bufovr
R/W
D1
D1
enbuf
R/W
D0
D0