SI4320-J1-FT Silicon Laboratories Inc, SI4320-J1-FT Datasheet - Page 32

• Manufacturer Part Number: SI4320-J1-FT
• Description: IC RCVR FSK 915MHZ 5.4V 16-TSSOP
• Manufacturer: Silicon Laboratories Inc

Specifications of SI4320-J1-FT

• Package / Case: 16-TSSOP
• Frequency: 315MHz, 433MHz, 868MHz, and 915MHz
• Sensitivity: -109dBm
• Data Rate - Maximum: 256 kbps
• Modulation Or Protocol: FSK, OOK
• Current - Receiving: 14mA
• 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: 315 MHz to 915 MHz
• Operating Supply Voltage: 2.2 V to 5.4 V
• Mounting Style: SMD/SMT
• Supply Current: 3 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: 336-1627-5

Input impedance
Measured input return loss on the demo boards with suggested matching circuit
-10
-15
-20
-25
-30
-35
-40
-5
0
-10
-15
-20
-25
-30
-35
-40
800
-5
0
200
868 and 915 MHz Matching to 50 Ohm
820
220
315 MHz Matching to 50 Ohm
840
240
860
260
880
280
magdB(S11)
freq. [MHz]
magdB(S11)
freq. [MHz]
900
g
300
920
320
940
340
360
960
380
980
400
1000
AC
-10
-15
-20
-25
-30
-35
-40
50ohm
-5
0
Frequency [MHz]
200
220
433 MHz Matching to 50 Ohm
915
868
433
315
240
Input Matching circuit
C1
C1
260
280
magdB(S11)
freq. [MHz]
L1 [nH]
300
L1
15
15
36
56
320
340
C1 [pF]
3
3
7
9
360
to LNA
to LNA
LNA 250ohm
380
400
Si4320
32