TDA2541

TDA2540 TDA2541 IF AMPLIFIER WITH DEMODULATOR AND AFC . . . . . . . . . . . . . . . SUPPLY VOLTAGE : 12V TYP SUPPLY CURRENT : 50mA TYP I.F. INPUT VOLTAGE SENSITIVITY AT F = 38.9MHz : 85µVRMS TYP VIDEO OUTPUT VOLTAGE (white at 10% of top synchro) : 2.7VPP TYP I.F. VOLTAGE GAIN CONTROL RANGE : 64dB TYP SIGNAL TO NOISE RATIO AT VI = 10mV : 58dB TYP A.F.C. OUTPUT VOLTAGE SWING FOR ∆f = 100kHz : 10V TYP DESCRIPTION The TDA2540 and 2541 are IF amplifier and A.M. demodulator circuits for colour and black and white television receivers using PNP or NPN tuners. They are intended for reception of negative or positive modulation CCIR standard. They incorporate the following functions : Gain controlled amplifier Synchronous demodulator White spot inverter Video preamplifier with noise protection Switchable AFC AGC with noise gating Tuner AGC output (NPN tuner for 2540)-(PNP tuner for 2541) VCR switch for video output inhibition (VCR play back) DIP16 (Plastic Package) ORDER CODE : TDA2540-TDA2541 PIN CONNECTIONS IF INPUT DECOUPLING CAPACITOR TUNER AGC TAKE-OVER ADJUST TUNER AGC OUTPUT AFC OUTPUT AFC SWITCH AFC DEMODULATOR L.C. NETWORK REFERENCE L.C. NETWORK 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 IF INPUT DECOUPLING CAPACITOR AGC CAPACITOR GROUND VIDEO OUTPUT VCC AFC DEMODULATOR L.C. NETWORK REFERENCE L.C. NETWORK 2540-01.EPS August 1992 1/7 TDA2540 - TDA2541 BLOCK DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol V (11–13) V (4–13) Ptot Tstg Tamb Parameter Supply Voltage Tuner A.G.C. Volta...