TDA7222A

TDA7222A TDA7222AD 3V AM/FM ONE-CHIP RADIO . . . . . ADVANCE DATA BUILT-IN FM F/E, AM/FM IF AND FM MPX AM DETECTOR COIL AND IF COUPLING CAPACITOR ARE NOT NEEDED COMPACT PACKAGE : 24-Pin Shrink OPERATING SUPPLY VOLTAGE RANGE VCC (opr) = 1.8 to 7.0V (TA = 25oC) LED DRIVE CIRCUIT FOR TUNING INDICATION SHRINK DIP24 (Plastic Package) ORDER CODE : TDA7222A DESCRIPTION TDA7222Aand TDA7222AD are AM/FM chip tuner ICs, which are designed for portable radios and 3V headphone radios. PIN CONNECTIONS TDA7222A (SDIP24) SO28 (Plastic Micropackage) ORDER CODE : TDA7222AD TDA7222AD (SO28) FM RF IN GND1 FM MIX AM MIX AGC VCC2 AM IF IN FM IF IN GND2 TUN LED ST LED QUAD 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 AM RF IN FM RF OUT V CC1 FM OSC AM OSC DET OUT MPX IN LPF1 LPF2 VCO L OUT R OUT FM RF IN GND1 FM MIX NOT CONNECTED AM MIX AGC VCC2 AM IF IN FM IF IN NOT CONNECTED GND2 TUN LED ST LED QUAD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 AM RF IN FM RF OUT VCC1 FM OSC NOT CONNECTED AM OSC DET OUT MPX IN LPF1 LPF2 NOT CONNECTED VCO L OUT R OUT 7222A-01.EPS / 7222AD01.EPS February 1995 This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without no tice. 1/7 2/7 L OUT R OUT V CC VCO Stop AM FM FM OSC 21 14 AM OSC 20 DET OUT 19 MPX IN 18 LPF1 17 LPF2 16 VCO 15 13 FM OSC Φ Φ BLOCK DIAGRAM TDA7222A - TDA7222AD AM RF IN FM RF OUT V CC1 24 23 22 AM OSC VCO PRE ...