SI4836-A10 Datasheet, PDF (9/21 Pages) Silicon Laboratories – BROADCAST MECHANICAL TUNING AM/FM/SW RADIO RECEIVER

2. Typical Application Schematic
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Notes:
1. Place C₄ close to V_DD and GND pins.
2. Pin 15 GND connects directly to GND plane on PCB.
3. Pin 5 leave floating.
4. To ensure proper operation and receiver performance, follow the guidelines in "AN738: Si4825/36-A Antenna,
Schematic, Layout, and Design Guidelines." Silicon Labs will evaluate the schematics and layouts for qualified
customers.
5. Pin 6 connects to the FM antenna interface and pin 8 connects to the AM antenna interface.
6. Place Si4836 as close as possible to antenna jack and keep the FMI and AMI traces as short as possible.
7. Recommend keeping the AM ferrite loop antenna at least 5 cm away from the tuner chip.
8. Keep the AM ferrite loop antenna at least 5 cm away from MCU, audio AMP, and other circuits which have AM
interference.
9. Place the transformer T1 away from any sources of interference and even away from the I/O signals of the Si4836.
Rev. 1.0
9