TDA4282T

The TDA4282T is a controlled AM amplifier with FM demodulator (to produce an intercarrier) and subsequent sound-IF limiting amplifier with coincidence demodulator, standard VCR connection and seperate AF-output with volume control. There are some features as follows. First is outstanding limiting qualities. The second is connection for video recorder. The last one is little external circuitry.

What comes next is about the maximum ratings of TDA4282T. The VS (supply voltage) is 15 V and 16.5 V when t1 min. The Rth SA (thermal resistance (system-ambient air)) is 65 K/W. The Tj (junction temperature) is 150. The Tstg (storage temperature) is from -40 to +125. Then is about the operational range. The VS (supply voltage) is from 11 to 15 V. The fAM (frequency range of AM part) is from 10 to 60 MHz. The fFM (frequency range of FM part) is from 0.01 to 12 MHz. The V2 (control voltage for AM part) is from 0 to 5 V. The I8 (switch current for FM part) is from 0.3 to 1 mA. The Tamb (ambient temperature in operation) is from 0 to 60.

The following is about the characteristics about TDA4282T (VS=15 V, Tamb=25). The typical IS (current consumption) is 60 mA and the maximum is 80 mA. Then is about the AM-part characteristics. The typical AGC range is 55 dB. The minimum VGS voltage is 0 V and the maximum is 5 V. The typical input impedance is 10 k. Then is about the FM-part characteristics. The typical impedance is 800. The typical input voltage for limiting is 60 V at f=30 kHz. The typical demodulator output resistance is 5.4 k.