NXP Semiconductors TDA2549
The TDA2549 is a complete i.f. It is capable of handling positively and negatively modulated video signals in both colour and black/white receivers.| Part No. | TDA2549 |
|---|---|
| Datasheet | TDA2549 Download |
| Manufacturer |  NXP Semiconductors |
| Description | I.F. amplifier and demodulator |
| Buy | Stock & Price |
GENERAL DESCRIPTION
TDA2549 The TDA2549 is a complete i.f. circuit with a.f.c., a.g.c., demodulation and video preamplification facilities for multistandard television receivers.FEATURES
● Gain-controlled wide-band amplifier providing complete i.f. gain● Synchronous demodulator for positive and negative modulation
● Video preamplifier with noise protection for negative modulation
● Auxiliary video input and output (75 Ω)
● Video switch to select between auxiliary video input signal and demodulated video signal
● A.F.C. circuit with on/off switch and inverter switch
● A.G.C. circuit for positive modulation (mean level) and negative modulation (noise gate)
● A.G.C. output for controlling MOSFET tuners QUICK REFERENCE DATA Supply voltage (pins 13 and 21) Supply current (pins 13 and 21) I.F. input signal at Vo = 2 V (between pins 6 and 7) Video output voltage at Vi = 0 V (between pins 22 and 3) positive modulation negative modulation Gain control range Signal-to-noise ratio at Vi = 10 mV...
