4421-DKDB1 Silicon Laboratories Inc, 4421-DKDB1 Datasheet - Page 39

• Manufacturer Part Number: 4421-DKDB1
• Description: KIT DEV TEST EZRADIO SI4421 TRX
• Manufacturer: Silicon Laboratories Inc

Specifications of 4421-DKDB1

• Accessory Type: Test Card, Transceiver, 915MHz
• Wireless Frequency: 915 MHz
• Interface Type: SPI
• Modulation: FSK
• For Use With/related Products: EZRadio®
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

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