SI4021-A1-FT Silicon Laboratories Inc, SI4021-A1-FT Datasheet - Page 11

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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
Modulated RF Spectrum
The antenna tuning characteristics was recorded in “max-hold” state of the spectrum analyzer. During the measurement, the transmitters
were forced to change frequencies by forcing an external reference signal to the XTL pin. While the carrier was changing the antenna tuning
circuit switched trough all the available states of the tuning circuit. The graph clearly demonstrates that while the complete output circuit
had about a 40 MHz bandwidth, the tuning allows operating in a 220 MHz band. In other words, the tuning circuit can compensate for 25%
variation in the resonant frequency due to any process or manufacturing spread.
Ref 10 dBm
#Samp
Log
10
dB/
VAvg
24
W1 S2
S3 FC
Center 434 MHz
#Res BW 1 kHz
Ref 10 dBm
#Peak
Log
10
dB/
VAvg
3
W1 S2
S3 FC
Center 434 MHz
#Res BW 3 kHz
AA
AA
With 10 MHz CLK Output Enabled at 433 MHz
17:11:41 Dec 7, 2005
17:18:23 Dec 7, 2005
180 kHz Deviation at 64 kbps
Spurious RF Spectrum
Atten 20 dB
Atten 20 dB
At 433 MHz with
#VBW 300 Hz
#VBW 1 kHz
1R
Sweep 4.074 s (2000 pts)
Sweep 45.47 s (2000 pts)
Mkr1
Span 50 MHz
Span 2 MHz
-44.23 dB
19.98 MHz
1
Ref 10 dBm
#Samp
Log
10
dB/
VAvg
50
W1 S2
S3 FC
Center 868 MHz
#Res BW 1 kHz
AA
17:26:17 Dec 7, 2005
Antenna Tuning Characteristics
180 kHz Deviation at 64 kbps
Atten 20 dB
At 868 MHz with
750–970 MHz
#VBW 1 kHz
Sweep 4.074 s (2000 pts)
Si4021
Span 2 MHz
11