SI4421-A0-FT Silicon Laboratories Inc, SI4421-A0-FT Datasheet - Page 39

• Manufacturer Part Number: SI4421-A0-FT
• Description: IC TXRX FSK 915MHZ 3.8V 16-TSSOP
• Manufacturer: Silicon Laboratories Inc

Specifications of SI4421-A0-FT

• Frequency: 433MHz, 868MHz, 915MHz
• Data Rate - Maximum: 256kbps
• Modulation Or Protocol: FSK
• Applications: ISM
• Power - Output: 7dbm
• Sensitivity: -110dBm
• Voltage - Supply: 2.2 V ~ 3.8 V
• Current - Receiving: 15mA
• Current - Transmitting: 28mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1737-5

REFERENCE DESIGNS
Evaluation Board with 50 Ohm Matching Network
Schematics
Frequency Dependent Component Values
Recommended Component Types
For component selection guidelines, see the notes on the next page.
Component
f [MHz]
434
868
915
C10
C11
C9
C8
C3
L1
L4
L2
L3
CN61
1
2
3
4
5
6
7
8
9
10
11
12
13
14
DCLK
SDI
DATA
SEL
SDO
SCK
IRQ
ARSSI
VDI
RESET
GND
L1 [nH]
Manufacturer
Coilcraft
Coilcraft
Coilcraft
Coilcraft
18
Murata
Murata
Murata
Murata
Murata
3.9
3.6
L2 [nH]
47
18
16
C3
*
GRM1885C1H2R7CZ01B
GRM1885C1H5R0CZ01B
GRM1885C1H2R7CZ01B
GRM1885C1H221JA01B
GRM1885C1H221JA01B
GND
C2
10nF
0603CS-18NX
0603CS-18NX
0603CS-47NX
0603CS-R39X
L3 [nH]
390
100
100
434MHz
C1
2.2uF
SDI
SCK
SEL
SDO
IRQ
DATA
DCLK
L4 [nH]
18
3.9
3.6
1
2
3
4
5
6
7
8
IC1
SDI
SCK
NSEL
SDO
NIRQ
FSK/DATA/NFFS
DCLK/CFIL/FFIT
CLK
IA4421
GRM1885C1H1R8CZ01B
C8 [pF]
GRM1885C1H1R2CZ01B
GRM1885C1H2R7CZ01B
GRM1885C1H470JZ01B
GRM1885C1H470JZ01B
NINT/VDI
XTL/REF
ARSSI
5
2.7
2.7
NRES
0603CS-3N9X
0603CS-3N9X
0603CS-18NX
0603CS-R10X
VDD
RF1
RF2
VSS
Part number
868 MHz
16
15
14
13
12
11
10
9
GND
GND
C9 [pF]
VDI
ARSSI
RESET
2.7
1.2
1.2
C10 [pF]
MATCHING_NETWORK
2.7
1.8
1.8
*
*
GRM1885C1H1R2CZ01B
GRM1885C1H2R7CZ01B
GRM1885C1H1R8CZ01B
*
GRM1885C1H330JZ01B
GRM1885C1H330JZ01B
VDD
C10
0603CS-3N9X
0603CS-3N9X
0603CS-16NX
0603CS-R10X
C11 [pF]
C9
*
GND
* See values in the table
915MHz
*
220
47
33
GND
*
optional
C8
*
C11
C3 [pF]
*
220
GND
GND
CN62
47
33
GND
ANT
Si4421
Note
3, 4
1
1
1
2
3
3
3
3
39