Chip S1A0901A01-A0 is a monolithic integrated circuit which consists of a one-chip tuner and a no adjustment FM multiplex
for AM/FM radios and headphone radios.

• One chip tuner with built-in FM Multiplex
• No adjustment for FM detector and VCO
• No AM detect coil, IF coupling capacitor, FM IF
bypass capacitor needed
• Built-in AM/FM selection switch
• Minimum number of external parts required
• Wide operating voltage range: VCC = 1.8V − 7V
• Low distortion (FM IF: 0.4 %, AM IF : 1%, MPX: 0.2% (Typ))