SI4022-A1-FT Silicon Laboratories Inc, SI4022-A1-FT Datasheet - Page 10

• Manufacturer Part Number: SI4022-A1-FT
• Description: IC TX FSK 915MHZ 3.8V 16-TSSOP
• Manufacturer: Silicon Laboratories Inc
• Type: ISM Band FSK Transmitterr

Specifications of SI4022-A1-FT

• Package / Case: 16-TSSOP
• Frequency: 868MHz, 915MHz
• Applications: ISM
• Modulation Or Protocol: FSK
• Data Rate - Maximum: 115.2kbps
• Power - Output: 6dBm
• Current - Transmitting: 24mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 2.2 V ~ 3.8 V
• Operating Temperature: -40°C ~ 85°C
• Operating Frequency: 434 MHz to 915 MHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 2.5 V, 3.3 V
• Supply Current: 24 mA
• Supply Voltage (max): 3.8 V
• Supply Voltage (min): 2.2 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Memory Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 336-1623-5

Note
Note
Control Commands
Note
Note
Note: In the following tables the POR column shows the default values of the command registers after power-on.
Configuration Setting Command
The output power is given in the table as
relative to the maximum available power, which
depends on the actual antenna impedance.
(See: Antenna Application Note available from
http://www.silabs.com/integration).
Control Word
Configuration Setting Command
Frequency Setting Command
Power Managament Command
Transmitter FIFO Write Command
FIFO Setting Command
Data Rate Command
Low Battery and Microcontroller Clock
Divider Command
Wake-up Timer Command
Extended Wake-up Timer Command
Extended Features Command
Status Register Read Command
bit
bs
p2
0
1
0
0
0
0
1
1
1
1
15
1
p1
0
0
1
1
0
0
1
1
14
0
Frequency Band [MHz]
p0
0
1
0
1
0
1
0
1
13
0
868
915
Output Power
12
1
[dBm]
-12
-15
-18
-21
-3
-6
-9
0
11
bs
10
p2
Related Parameters/Functions
frequency band and deviation, output power, crystal oscillator load capacitance
frequency of the local oscillator
crystal oscillator, synthesizer, power amplifier, low battery detector, wake-up timer,
clock output buffer
transmitter FIFO write
FIFO functions
bit rate
LBD voltage threshold and microcontroller clock division ratio
wake-up time period
wake-up time period finer adjustment
low frequency output clock, wake-up timer extra functions
transmitter status read
p1
9
p0
8
x3
7
The resulting output frequency can be calculated as:
where:
x2
6
x3
0
0
0
0
1
1
x1
f
f
next command)
M is the three bit binary number <m2 : m0>
SIGN = (ms) XOR (FSK input)
5
out
0
is the channel center frequency (see the
x2
0
0
0
0
1
1
= f
……
x0
0
4
– (-1)
x1
0
0
1
1
1
1
ms
3
SIGN
x0
0
1
0
1
0
1
* (M + 1) * (20 kHz)
m2
2
Capacitance [pF]
m1
Crystal Load
1
10.0
15.5
16.0
8.5
9.0
9.5
….
m0
0
9082h
POR
Si4022
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