TA1298BN

The TA1298BN is a signal processor IC for PAL/NTSC color TV,  chroma, integrating video, sync/deflection (sync processing only in Double Scan mode) processors in a 56-pin shrink dual-in-line plastic package. The video section has a high-performance sharpness correction circuit (for YUV double scanning).  It is suitable for high-quality, large-screen, wide, and double-scanning TV. The chroma section has a PAL/NTSC auto detector circuit. The syncl deflection section has a 50/60 Hz auto detector circuit. The PAL demodulator circuit includes a baseband signal processor, making the circuit adjustment free. TA1298BN incorporates an IZC bus, enabling the user to set controls and functions via the bus.

The features of TA1298BN can be summarized as (1)video and chroma sections:Y delay line; chroma trap; IQ demodulation for NTSC; UV demodulation for PAL; color decoder tint; (2)back-end processor (BEP) section (Y processing/color difference processing (text sections): Independent operation from video and chroma demodulators; Double scanning signal processing; (Y processing section), black stretcher (controlled by l2C bus) variable DC restoration rate (controlled by I2C bus); (3)high bright color; (4)delay aperture sharpness circuit (APAcon) + luminance transient improver (LTI); (5) correction (one-point break line, gain, and start point controllable); (6)noise reduction circuit; (7) speed modulation output (first-order differential output, phase/amplitude adjustable); (8)(Color difference processing section); (9)color detail enhancer; (10)relative phase and amplitude switchable; (11)flesh-color correction (only at IQ modulation); (12)color ; (13)baseband tint control; (14)(Text section); (15)primary color output; (16)on-screen-display (OSD) interface; (17)linear RGB interface; (18)drive control; (19)syncl deflection section; (20)high-performance sync separator circuit; (21)adjustment-free horizontal and vertical oscillator circuits by countdown; (22)Horizontal and vertical position adjustment; (23)sync separation, horizontal/vertical output; (24)horizontal/vertical pulse output (in Normal Scan mode only).

The absolute maximum ratings of TA1298BN are (1)power supply voltage  VCCmaxl:  12 V; (2)input pin signal voltage  einmax:  9 Vp-p; (3)power dissipation  PD(Note 1: See the figure below):  1920  mW; (4)power dissipation reduction rate 1/ja:15.4 mW/°C; (5)operating temperature  Topr: -20~65 °C; (6)storage temperature  Tstg: -55~150  °C(Note 2: Since the device is susceptible to surge, handle with care. Especially pin 32 has a low surge resistance. ).