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| SI4730-D60-GMR Datasheet, PDF (21/44 Pages) Silicon Laboratories – BROADCAST AM/FM/SW/LW RADIO RECEIVER | |||
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2.2. SSOP Typical Application Schematic
Si4730/31/34/35-D60
Optional: Digital Audio Out
OPMODE: 0xB0, 0xB5
C9
R1
DOUT
R2
DFS
R3
GPO3/DCLK
GPO2/INT
GPO1
FM Antenna
C2
L1
C3
1 DOUT
2 DFS
3 GPO3/DCLK
4 GPO2/INT
5 GPO1
6 NC
7 NC
8 FMI
9 RFGND
10 NC
11 NC
12 AMI
Optional: AM Air Loop Antenna
L2
DFS 2
DOUT 1
GP03/DCLK
3
LOUT
24
ROUT 23
Si473x
C7
C8
R3
R2
R1
Optional: AUXIN/Digital Audio Out
OPMODE: 0x5B, 0x0B
RIN
LIN
DCLK
DFS
DOUT
C9
LOUT 24
ROUT 23
DBYP 22
VA 21
VD 20
RCLK 19
SDIO 18
SCLK 17
SENB 16
RSTB 15
GND 14
GND 13
LOUT
ROUT
C1
2.0 to 5.5 V VA
RCLK
SDIO
SCLK
SENB
RSTB
1.62 to 3.6 V
VD
C4
T1 1
C3
3
AMI
RFGND
GPO3
X1
C5
RCLK
C6
Optional: For Crystal OSC
Notes:
1. Place C1 close to VA and C4 close to VD pin.
2. All grounds connect directly to GND plane on PCB.
3. Pins 6 and 7 are no connects, leave floating.
4. Pins 10 and 11 are unused. Tie these pins to GND.
5. To ensure proper operation and receiver performance, follow the guidelines in âAN383: Si47xx Antenna, Schematic,
Layout, and Design Guidelines.â Silicon Laboratories will evaluate schematics and layouts for qualified customers.
6. Pin 8 connects to the FM antenna interface, and pin 12 connects to the AM antenna interface.
7. Place Si473x-D60 as close as possible to antenna and keep the FMI and AMI traces as short as possible.
Rev. 1.1
21
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