8 Application Schematic
8.1 Application Circuit for RCLK and headphone
1. Place C4 closed to VDD pin
2. Options: the antenna matching network is kept for high sensitivity mode.
3. Strongly recommended to keep L5, L6, L7 and C9 when applying earphone antennas.
8.1.1 Bill Of Materials
L5, L6, L7
RL508 FM Radio Tuner
Audio AC couple capacitors
Ferrite bead keep high-impedance for RF path
Supply bypass capacitor 100nF ,±20%,Z5U/X7R
I2C pull-up resistors
Specifications subject to change without notice 20