SI4735-D60-GU 查看數據表（PDF） - Silicon Laboratories

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SI4735-D60-GU

BROADCAST AM/FM/SW/LW RADIO RECEIVER

Silicon Laboratories 

Si4730/31/34/35-D60

2. Typical Application Schematic

2.1. QFN Typical Application Schematic

DFS 16

DOUT 15

GP03/DCLK

17

LOUT

14

ROUT 13

Si473x

C7

C8

R3

R2

R1

RIN

LIN

DCLK

DFS

DOUT

C9

Optional: AUXIN/Digital Audio Out

OPMODE: 0x5B, 0x0B

Optional: Digital Audio Out

OPMODE: 0xB0, 0xB5

GPO1

GPO2/INT

C9

R3

R2

R1

GPO3/DCLK

DFS

DOUT

FM Antenna

C2

L1

C3

1 NC

DOUT 15

2 FMI

LOUT 14

Si473x 3 RFGND

ROUT 13

4 AMI

D60

GND 12

5 RSTB

VA 11

LOUT

ROUT

2.7 to 5.5 V

VA

C1

RSTB

Optional: AM Air Loop Antenna

L2

1.62 to 3.6 V

VD

C4

RCLK

SDIO

SCLK

SENB

GPO3

T1 1

C3

AMI

X1

C5

3

RFGND

RCLK

C6

Optional: For Crystal OSC

Notes:

1. Place C1 close to VA pin and C4 close to VD pin.

2. All grounds connect directly to GND plane on PCB.

3. Pins 1 and 20 are no connects, leave floating.

4. To ensure proper operation and receiver performance, follow the guidelines in “AN383: Si47xx Antenna, Schematic,

Layout, and Design Guidelines.” Silicon Laboratories will evaluate schematics and layouts for qualified customers.

5. Pin 2 connects to the FM antenna interface, and pin 4 connects to the AM antenna interface.

6. Place Si473x-D60 as close as possible to antenna and keep the FMI and AMI traces as short as possible.

20

Rev. 1.1

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