si4710-b30 Silicon Laboratories, si4710-b30 Datasheet - Page 17

• Manufacturer Part Number: si4710-b30
• Description: Si4710/11-b30 Fm Radio Transmitter
• Manufacturer: Silicon Laboratories

4. Universal AM/FM RX/FM TX Application Schematic
Figure 12 shows an application schematic that supports the Si47xx family of 3 mm x 3 mm QFN products,
including the Si4702/3/4/5 FM receivers, Si471x FM transmitters, Si472x FM transceivers, and Si473x AM/FM
receivers.
Following the schematic and layout recommendations detailed in “AN383:
Guidelines
AM/FM RX/FM TX Application Schematic”. System components are those that are likely to be present for any tuner
or transmitter design.
System Component
D3
J1
” will result in optimal performance with the minimal application schematic shown in Figure 12. “Universal
L
HP Jack
HEADPHONE
270 nH
System Component
System Component
D5
D4
R 2
S 1
T 5
Figure 12. Universal AM/FM RX/FM TX Application Schematic
RCLK
SCLK
SDIO
RST
SEN
VIO
FM Embedded RX/TX Antenna
1 nF
Audio
C4
Right
R14
0 
AM Ferrite Antenna
L
600 uH
FERRITE
Audio
180–
Left
10 nH
120 nH
L
GPIO2
GPIO3
GPIO1
L1
SHORT
470 nF
C16
2.5 k @ 100 MHz
2.5 k @ 100 MHz
3.3pF/0 
C17/R21
FB1
FB2
2 k
R16
Rev. 1.1
1
2
3
4
5
NC
FMI
RFGND
TXO/AMI
RST
Headphone Amplifier
System Component
Si47xx
U2
U1
GND/RIN/DOUT
LOUT/DFS
ROUT/DIN
Universal Antenna Selection and Layout
GND
VDD
Si4710/11-B30
15
14
13
12
11
Si4702/03: Populate R12, R13, R21, C14, and C15
Si4704/05/1x/2x/3x Analog: Populate C7, C8, C14
and C15 as shown
Si4704/05/1x/2x/3x Digital: Populate R16, R17,
R18, R19, and R20 as shown
C1
22 nF
VBATTERY
2.7 to 5.5 V
R13
R12
0 
0 
0.39 uF/ 0 
0.39 uF/ 600 
C15/R20
0.39 uF/ 2 k
0.39 uF/ 0 
C8/R18
VBATTERY
2.7 to 5.5 V
C7/R17
C14/R19
System Components
LIN
RIN
17