SI4021-A1-FT Silicon Laboratories Inc, SI4021-A1-FT Datasheet - Page 13

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SI4021-A1-FT

Manufacturer Part Number
SI4021-A1-FT
Description
IC TX FSK 915MHZ 5.4V 16-TSSOP
Manufacturer
Silicon Laboratories Inc
Datasheet

Specifications of SI4021-A1-FT

Package / Case
16-TSSOP
Frequency
433MHz, 868MHz, 915MHz
Modulation Or Protocol
FSK, OOK
Data Rate - Maximum
512kbps
Power - Output
8dBm
Current - Transmitting
24mA
Data Interface
PCB, Surface Mount
Antenna Connector
PCB, Surface Mount
Voltage - Supply
2.2 V ~ 5.4 V
Operating Temperature
-40°C ~ 85°C
Operating Frequency
433 MHz to 915 MHz
Mounting Style
SMD/SMT
Operating Supply Voltage
2.2 V to 5.4 V
Supply Current
1.5 mA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Applications
-
Memory Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1622-5

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SI4021-A1-FTR
Manufacturer:
SILICON
Quantity:
5 000
Control Commands
Note: In the following tables the POR column shows the default values of the command registers after power-on.
1. Configuration Setting Command
d2
b1
10
11
12
bit
0
0
1
1
0
0
0
0
1
1
1
1
1
2
3
4
5
6
7
8
9
d1
Control Command
Configuration Setting Command
Power Management Command
Frequency Setting Command
Data Rate Command
Power Setting Command
Low Battery Detector Command
Sleep Command
Push-Button Command
Wake-Up Timer Command
Data Transmit Command
Status Register Command
PLL Setting and Reset Mode Command
b0
0
1
0
1
0
0
1
1
0
0
1
1
15
1
d0
0
1
0
1
0
1
0
1
Frequency Band {MHz]
14
0
13
0
315
433
868
915
Frequency [MHz]
Clock Output
12
b1
1.25
1.66
3.33
2.5
10
11
b0
1
2
5
10
d2
d1
9
d0
8
Related Parameters/Functions
Frequency band, microcontroller clock output, crystal
load capacitance, frequency deviation
Crystal oscillator, synthesizer, power amplifier, low
battery detector, wake-up timer, clock output buffer
Carrier frequency
Bit rate
Nominal output power, OOK mode
Low battery threshold limit, transmit bit synchronizer,
wake-up timer calibration
Length of the clock tail after power down
Push-button related functions
Wake-up time period
Data transmission
Transmitter status read
PLL bandwidth, reset mode
x3
7
x2
6
The resulting output frequency can be calculated as:
where:
Note:
x1
5
x3
0
0
0
0
1
1
f
f
M is the three bit binary number <m2 : m0>
SIGN = (ms) XOR (FSK input)
out
0
is the channel center frequency (see the next command)
x2
x0
= f
4
0
0
0
0
1
1
Use M in a range from 0 to 6.
0
– (-1)
x1
ms
0
0
1
1
1
1
3
SIGN
x0
0
1
0
1
0
1
m2
* (M + 1) * (30 kHz)
2
Crystal Load Capacitance [pF]
m1
1
m0
0
10.0
15.5
16.0
8.5
9.0
9.5
8080h
Related control bits
b1 to b0, d2 to d0, x3
to x0, ms, m2 to m0
a1 a0, ex, es, ea, eb,
et, dc
f11 to f0
r7 to r0
ook, p2 to p0
dwc, ebs, t4 to t0
s7 to s0
p4, d1 to d0, b4 to b1,
bc
r4 to r0, m7 to m0
bw1 to bw0, dr
POR
Si4021
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