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YOUDA INTEGRATED CIRCUIT
YD2111
3V AM/FM ONE CHIP TUNER IC—YD2111
DESCRIPTION
The YD2111 are AM/FM 1 chip tuner ICs, which are designed for portable radios and 3V headphone radios.
FEATURES
*For NEW FCC.
*AM Detector coil, FM IFT, IF coupling condenser are not needed.
*For adopting ceramic discriminator, it is not necessary to adjust the FM quad detector circuit.
*Built-in FM MPX VCO circuit.
*Built-in varactor diode for AFC.
*Built-in AM low cut circuit.
*Low supply current.
(Vcc=3V, Tamb=25℃) Iccq (FM)=9.
0mA (typ.
) Iccq (AM)=5.
0mA (typ.
) *Operating Supply
Voltage Range: Vcc=1.
8~7V(Tamb=25℃)
BLOCK DIAGRAM
24 23 22 21 FM OSC 20 AM OSC AF FM MUTE AM DET FM MIX 2 3 4 5 ...