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> 2540 / TDA2540 if amp with demodulator and afc
2540 / TDA2540 if amp with demodulator and afc
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IF AMPLIFIER WITH DEMODULATOR AND AFC
* I.F. INPUT VOLTAGE SENSITIVITY ATF = 38.9MHz : 85mVRMS TYP
* VIDEO OUTPUT VOLTAGE (white at 10% oftop 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 Df = 100kHz : 10V TYP
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 :
* Video preamplifier with noise protection
* Tuner AGC output (NPN tuner for 2540)-(PNP tuner for 2541)
* VCR switch for video output inhibition (VCR play back)
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