SI4021-A1-FT Silicon Laboratories Inc, SI4021-A1-FT Datasheet - Page 9

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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
Note 1:
for sending 100 byte packets in length at 19.2 kbps with +3 dBm output power in the 915 MHz band.
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Using a CR2032 battery (225 mAh capacity), the expected battery life is greater than 2 years using a 60-second wake-up period
Using anything but a 10 MHz crystal is allowed but not recommended because all crystal-referred timing and frequency
parameters will change accordingly.
Adjustable in 8 steps.
Optimal antenna admittance/impedance for the Si4021:
With selective resonant antennas (see: Application Notes available from http://www.silabs.com/integration).
During this period, no commands are accepted by the chip. For detailed information see the Reset modes section.
The maximum FSK bitrate and the Output phase noise are dependent on the on the actual setting of the PLL Setting Command.
The crystal oscillator start-up time strongly depends on the capacitance seen by the oscillator. Using low capacitance and low ESR
crystal is recommended. When designing the PCB layout keep the trace connecting to the crystal short to minimize stray
capacitance.
434 MHz
868 MHz
915 MHz
1.35E-3 - j1.2E-2
1.45E-3 - j1.3E-2
1.3E-3 - j6.3E-3
Yantenna [S]
Zantenna [Ohm]
31 + j152
8.7 + j77
9 + j82
Lantenna [nH]
58.00
15.20
13.60
Si4021
9