com YOUDA INTEGRATED CIRCUIT YD1191 SINGLE-CHIP FM/AM RADIO IC—YD1191 DESCRIPTION The YD1191 is a one-chip FM/AM radio IC designed for radio-cassette tape recorders.
FEATURES *Small number of peripheral components.
*Low current consumption (Vcc=3V) For FM:ID=5.
3mA (Typ.
) For AM:ID=3.
4mA (Typ.
) *Built-in FM/AM select switch.
*Built-in RF AGC, IF AGC circuit.
*Tuning LED driver.
*Large output of AF amplifier.
Vcc=6V,EIAJ output=500mW (Typ.
) When load impedance 8Ω BLOCK DIAGRAM 28 27 26 25 24 23 22 21 20 19 TUNING METER 18 17 16 15 AM IF DET AGC AF Power AMP AM RF AMP FM DISCRIMINATOR FM FE 1 2 3 4 5 6 7 8 9 FM IF AMP 10 11 12 13 14 WuXi YouDa Electron...

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