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TOSHIBA
TOSHIBA

TB1226EN Datasheet

Video / Chroma and Synchronizing Signals Processing IC


TB1226EN Datasheet Preview


TENTATIVE
TOSHIBA Bi-CMOS INTEGRATED CIRCUIT
SILICON MONOLITHIC
TB1226EN
TB1226EN
VIDEO, CHROMA AND SYNCHRONIZING SIGNALS PROCESSING IC FOR PAL / NTSC
/ SECAM SYSTEM COLOR TV
TB1226EN that is a signal processing IC for the PAL / NTSC /
SECAM color TV system integrates video, chroma and
synchronizing signal processing circuits together in a 56-pin
www.DataSheets4hUr.icnokmDIP plastic package.
TB1226EN incorporates a high performance picture quality
compensation circuit in the video section, an automatic PAL /
NTSC / SECAM discrimination circuit in the chroma section, and
an automatic 50 / 60Hz discrimination circuit in the
synchronizing section. Besides a crystal oscillator that internally
generates 4.43MHz, 3.58MHz and M / N-PAL clock signals for
color demodulation, there is a horizontal PLL circuit built in the
IC.
The PAL / SECAM demodulation circuit which is an
Weight: 5.55g (Typ.)
adjustment-free circuit incorporates a 1H DL circuit inside for
operating the base band signal processing system.
Also, TB1226EN makes it possible to set or control various functions through the built-in I2C bus line.
FEATURES
Video section
Built-in trap filter
Black expansion circuit
Variable DC regeneration rate
Y delay line
Sharpness control by aperture control
γ correction
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 forced mode
1H delay line also serves as comb filter in NTSC demodulation
Built-in band-pass filter, SECAM bell filter
Color limiter circuit
1 2001-07-26
Page 1

Synchronizing deflecting section
Built-in horizontal VCO resonator
Adjustment-free horizontal / vertical oscillation by count-down circuit
Double AFC circuit
Vertical frequency automatic discrimination circuit
Horizontal / vertical holding adjustment
Vertical ramp output
Vertical amplitude adjustment
Vertical linearity / S-shaped curve adjustment
Text section
Linear RGB input
OSD RGB input
www.DataSheet4U.comCut / off-drive adjustment
RGB primary signal output
TB1226EN
2 2001-07-26
Page 2

BLOCK DIAGRAM
TB1226EN
3 2001-07-26
Page 3
Part Number TB1226EN
Manufactur TOSHIBA
Description Video / Chroma and Synchronizing Signals Processing IC
Total Page 70 Pages
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TB1226EN datasheet
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