SI4430-B1 Datasheet, PDF (16/74 Pages) Silicon Laboratories – Si4430/31/32 ISM TRANSCEIVER

Si4430/31/32-B1
supply voltage
C6
C7
C8
100p 100n 1u
X1
30MHz
VDD
GP1
GP2
L4
C3
L3
C2
L2
L1 VDD_RF ₁
15 ^SCLK
TX ₂
14 ^SDI
C1
RFp _{3 Si4430/31 13} SDO
GP3
GP4
GP5 ^{microcontroller}
RXn ₄
12 ^VDD_D
C4
NC ₅
11 ^NC
L6
L5
C9
1u
C5
VSS
Programmable load capacitors for X1 are integrated.
L1-L6 and C1-C5 values depend on frequency band, antenna
impedance, output power and supply voltage range.
Figure 1. Si4430/31 RX/TX Direct-Tie Application Example
Supply Voltage
C6
C7
C8
100 p 100 n 1 u
X1
30 MHz
GP1
GP2
VDD
TR & ANT-DIV
Switch
1
6
2
5
3
4
L3
C3
L2
C2
C4
L4
C5
L1 VDD_RF ₁
15 ^SCLK
GP3
C1
TX ₂
14 ^SDI
RFp _{3 Si4432 13} SDO
GP4
GP5 ^{Microcontroller}
RXn ₄
12 ^VDD_D
NC ₅
11 ^NC
C9
1u
VSS
Programmable load capacitors for X1 are integrated.
L1–L4 and C1–C5 values depend on frequency band, antenna
impedance, output power, and supply voltage range.
Figure 2. Si4432 Antenna Diversity Application Example
16
Rev 1.1