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| SI4704-D60-GUR Datasheet, PDF (18/39 Pages) Silicon Laboratories – BROADCAST FM RADIO RECEIVER WITH RDS/RBDS | |||
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Si4704/05-D60
2.2. SSOP Typical Application Schematic
Optional: Digital Audio Out
OPMODE: 0xB0, 0xB5
C9
R1
DOUT
R2
DFS
R3
GPO3/DCLK
GPO2/INT
GPO1
FM Antenna
C2
Embedded Antenna
1 DOUT
2 DFS
3 GPO3/DCLK
4 GPO2/INT
5 GPO1
6 NC
7 NC
8 FMI
9 RFGND
10 NC
11 LPI
12 NC
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
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. Pin 10 is unused. Tie this pin 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.
7. Place Si4704/05-D60 as close as possible to antenna and keep the FMI traces as short as possible.
18
Rev. 1.2
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