SI4322-A1-FT Silicon Laboratories Inc, SI4322-A1-FT Datasheet - Page 37

• Manufacturer Part Number: SI4322-A1-FT
• Description: IC RCVR FSK 915MHZ 3.8V 16-TSSOP
• Manufacturer: Silicon Laboratories Inc
• Type: FSK Receiverr

Specifications of SI4322-A1-FT

• Package / Case: 16-TSSOP
• Frequency: 868MHz, 915MHz
• Sensitivity: -104dBm
• Data Rate - Maximum: 256 kbps
• Modulation Or Protocol: FSK
• Applications: Remote Control, RKE, Security Systems
• Current - Receiving: 14mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Features: RSSI Equipped
• Voltage - Supply: 2.2 V ~ 3.8 V
• Operating Frequency: 915 MHz
• Operating Supply Voltage: 2.5 V, 3.3 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Supply Current: 12 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Operating Temperature: -
• Memory Size: -
• Lead Free Status / Rohs Status: Supplier Unconfirmed
• Other names: 336-1628-5

Note: LNA gain: maximum, V
The table below shows the optimal receiver baseband bandwidth (BW) and transmitter deviation frequency (δf
settings for different data-rates supposing no transmit receive offset frequency. If TX/RX offset (for example due to
crystal tolerances) have to be taken into account, increase the BW accordingly.
f
BW=135 kHz
FSK
1.2 kbps
=60 kHz
f
BW=135 kHz
10
10
10
10
10
10
10
10
10
10
FSK
2.4 kbps
1
1
-1
-2
-3
-4
-5
-1
-2
-3
-4
-5
-115
-115
=60 kHz
1.2 kbps
2.4 kbps
1.2 kbps
4.8 kbps
DD
2.4 kbps
9.6 kbps
4.8 kbps
f
= 3.0 V
BW=135 kHz
9.6 kbps
FSK
4.8 kbps
-110
-110
Figure 11. BER Curves in 433 MHz Band
Figure 12. BER Curves in 868 MHz Band
=60 kHz
f
BW=135 kHz
FSK
-105
-105
9.6 kbps
=60 kHz
Input Power [dBm]
Input Power [dBm]
Rev. 1.2
f
BW=135 kHz
-100
-100
FSK
19.2 kbps
=60 kHz
19.2 kbps
38.4 kbps
57.6 kbps
19.2 kbps
38.4 kbps
f
57.6 kbps
-95
-95
BW=135 kHz
FSK
38.4 kbps
=100 kHz
-90
-90
f
BW=200 kHz
FSK
57.6 kbps
115 kbps
115 kbps
=120 kHz
-85
-85
Si4322
f
BW=270 kHz
FSK
115.2 kbps
=140 kHz
FSK
37
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