SI4704-D60-GUR Datasheet, PDF(17/39 Page) Silicon Laboratories – BROADCAST FM RADIO RECEIVER WITH RDS/RBDS

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SI4704-D60-GUR Datasheet, PDF (17/39 Pages) Silicon Laboratories – BROADCAST FM RADIO RECEIVER WITH RDS/RBDS

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2. Typical Application Schematic

2.1. QFN Typical Application Schematic

Si4704/05-D60

FM Antenna

Embedded Antenna

RSTB

Optional: Digital Audio Out

OPMODE: 0xB0, 0xB5

GPO1

GPO2/INT

1 NC

DOUT 15

2 FMI

LOUT 14

3 RFGND

ROUT 13

4 LPI Si4704/05 GND 12

5 RSTB

D60

VA 11

GPO3/DCLK

DFS

DOUT

LOUT

ROUT

2.7 to 5.5 V

1.62 to 3.6 V

RCLK

SDIO

SCLK

SENB

GPO3

RCLK

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 âAN383: Si47xx Antenna, Schematic,

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

5. Pin 2 connects to the FM antenna interface.

6. Place Si4704/05-D60 as close as possible to antenna and keep the FMI traces as short as possible.

Rev. 1.2

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