(China (Mainland))
Product Summary
The TB1274AF is a PAL/NTSC/SECAM colour TV brightness chromaticity and synchronous signal processor integrated circuit.
Parametrics
TB1274AF absolute maximum ratings: (1)Supply voltage: 5.5 V; (2)Signal voltage at each input pin: 5 Vp-p; (3)Power consumption: 1644 mW; (4)Power consumption reduction ratio: 13.16 mW/℃; (5)Operating temperature: -20～65 ℃; (6)Storage temperature: -55～150 ℃.
Features
TB1274AF features: (1)Built-in 1H delay circuit (PAL / SECAM base band demodulation system); (2)One crystal color demodulation circuit (4.43MHz, 3.58MHz, M/N-PAL); (3)Automatic system discrimination system and forced system mode; (4)1H delay line also serves as comb filter in NTSC demodulation; (5)Built-in band-pass and take-off filter, SECAM bell filter; (6)Sub-Color control (-/+2dB).
Diagrams
