SI4431-A0-FM Silicon Laboratories Inc, SI4431-A0-FM Datasheet - Page 52
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SI4431-A0-FM
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
SI4431-A0-FMR
Manufacturer:
SILICON
Quantity:
3 500
Part Number:
SI4431-A0-FMR
Manufacturer:
SILICONLABS/芯科
Quantity:
20 000
Si4431
7.2. Modem Settings for OOK
The Si4431 is configured for OOK mode by setting the modtyp[1:0] field to OOK in "Register 71h. Modulation Mode
Control 2". In OOK mode, the following parameters can be configured: data rate, manchester coding, channel filter
bandwidth, and the clock recovery oversampling rate.
The required data rate (Rb) is configured via the txdr[15:0] field in "Register 6Eh. TX Data Rate 1" and "Register
6Fh. TX Data Rate 0". For data rates < 30 kbps, “txdtrscale” in "Register 70h. Modulation Mode Control 1" should
be set to 1 for increased data rate precision. Manchester coding is enabled by setting enmanch in Register 70h.
The receive channel select filter bandwidth is configured via "Register 1Ch. IF Filter Bandwidth". The register
settings for the available channel bandwidth bandwidths are shown in Table 18.
The proper settings for ndec[2:0] are listed in Table 19 where Rb is the data rate (Rb) which is doubled when
Manchester coding is enabled.
52
Table 18. Channel Filter Bandwidth Settings
BW[kHz]
127.9
137.9
191.5
225.1
248.8
269.3
284.9
335.5
361.8
420.2
468.4
518.8
620.7
112.1
75.2
83.2
95.3
577
90
Preliminary Rev. 0.4
dwn3_bypass filset[3:0]
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
10
12
13
14
11
5
F
1
2
3
4
6
7
1
2
3
4
8
9