TA8168SN

TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA8168SN FM Front End IC TA8168SN The TA8168SN is a FM front−end IC which is designed for radio cassette recorders and music centers. Comparing with conventional types, RF inter−modulation characteristics and overload characteristics are improved. Features · Improved RF inter−modulation characteristics by double balanced type mixer circuit · Low drift oscillation frequency for strong input · It is available TV band frequency (up to 220MHz) · Built−in IF amplifier RO = 330Ω (typ.), Vo (IF) = 70mVrms (typ.) · Emitter output of local oscillation transistor · Built−in varactordiode for AFC Cathode and anode are floating · Operating supply voltage range VCC (opr) = 3.5~14V (Ta = 25°C) Block Diagram Weight: 0.65g (typ.) 1 2002-10-30 Explanation Of Terminals (terminal voltage is DC voltage at Ta = 25°C, VCC = 5V, and no signal) Pin No. Symbol Contents Internal Circuit 1 By-pass Bias terminal for RF amp. Capacitor is connected 2 RF in 3 VCC 4 RF out 5 Mix in 6 GND 7 Mix out RF input terminal Power supply terminal RF output terminal RF tank circuit is connected Mixer input terminal Ground terminal — Refer to pin(1), (2). — Mixer output terminal Mixer coil is connected 8 IF out IF output terminal output impedance RO (IF) = 330Ω (typ.) 9 Monitor 10 Local OSC 11 AFC (C) 12 AFC (A) Local OSC monitor terminal Local OSC terminal OSC tank circuit is connected AFC diode cathode terminal AFC diode anode terminal ...