Step 10: Design of the HEX3653 FM Receiver Kit
PCB
U1 HEX3653 Chip SMD 16pin
Q1 SS8050 NPN Transistor
L1 Inductor 100uH
Y1 32.768KHz Crystal
R1, R2, R3, R4 Resistors 10KOhm
C1, C2 Electrolytic Capacitors 100uF
C3, C5 Ceramic Capacitors (104) 0.1uF
C4 Ceramic Capacitor (33) 33pF
D1, D2 1N4148 Diodes
Yellow LED
Audio Phone Jack 3.5mm
Four-Pin Header with Jumper
Five Momentary Pushbuttons
Dual AA Battery Holder
The HEX3653 receiver chip operates over the 76MHz-108MHz frequency range, which is allocated to FM broadcast
radio.
The kit includes ve pushbuttons:
Frequency tuning (SEEK +, SEEK-)
Volume control (VOL +, VOL-)
Power (PW)
The circuit has a working voltage of 1.8-3.6V, which is easily supplied by two 1.5V cells.
HackerBox 0034: SubGHz: Page 8
