參數(shù)資料
型號(hào)： TB1274BFG
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP48
封裝： 10 X 14 MM, 0.80 MM PITCH, QFP-48
文件頁(yè)數(shù)： 1/37頁(yè)
文件大小： 839K
代理商： TB1274BFG
TB1274BFG
2005-08-18
1
TOSHIBA Bi-CMOS INTEGRATED CIRCUIT
SILICON MONOLITHIC
TB1274BFG
LUMINANCE,
CHROMA
AND
SYNCHRONIZING SIGNALS PROCESSOR IC
FOR PAL / NTSC / SECAM COLOR TV
TB1274BFG integrates luminance, chroma and synchronizing
signals processing circuits for PAL / NTSC / SECAM color TV
system.
TB1274BFG incorporates high performance picture quality
compensation circuits in luminance section, an automatic PAL
/ NTSC / SECAM discrimination and decode circuits in chroma
section, and an automatic 50 / 60 Hz discrimination circuit in
synchronizing section.
Besides a crystal oscillator generates 4.43MHz, 3.58MHz and
M/N-PAL clock signals internally for color demodulation. A
horizontal PLL circuit is also built in this IC.
PAL
/
SECAM
demodulation
circuits
which
are
adjustment-free circuits incorporates a 1H DL circuit inside for
operating the base band signal processing system.
Also, TB1274BFG makes it possible to set and to control various functions through the built-in I2C BUS
line.
FEATURES
LUMINANCE SECTION
Built-in chroma trap filter
Y delay line
Sharpness control
Sub-Contrast control (-/+ 2dB)
Black set-up
CHROMA SECTION
Built-in 1H delay circuit (PAL / SECAM base band
demodulation system)
One crystal color demodulation circuit (4.43MHz,
3.58MHz, M/N-PAL)
Automatic system discrimination system and
forced system mode
1H delay line also serves as comb filter in NTSC
demodulation
Built-in band-pass and take-off filter, SECAM bell
filter
Sub-Color control (-/+2dB)
SYNCHRONIZING SECTION
Built-in horizontal VCO resonator
Adjustment-free horizontal and vertical oscillation
by count-down circuit
Automatic
vertical
frequency
discrimination
circuit
Noise detection circuit
OTHERS
Y/C out level control
4-channels inputs switching
2-input circuit for RGB
2-input circuit for Y/Cb/Cr
Y/Cb/Cr outputs
Cb/Cr offset adjustment
Built-in pre filters for A/D converter
Weight
: 0.83 g (Typ.)
QFP48-P-1014-0.80
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