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PDF TC90A44P Data sheet ( Hoja de datos )
| Número de pieza | TC90A44P | |
| Descripción | NTSC 2-LINE DIGITAL Y / C SEPARATION IC | |
| Fabricantes | Toshiba | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TC90A44P (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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TC90A44P,45P/F
TOSHIBA CMOS DIGITAL INTEGRATED CIRCUIT SILICON MONOLITHIC
TC90A44P,TC90A45P,TC90A45F
NTSC 2-LINE DIGITAL Y / C SEPARATION IC
The TC90A44P, TC90A45P / F separates luminance (Y) and
chrominance (C) signals from NTSC system composite video signal
by using 2 horizontal (H) lines separation. The Y / C separation unit
for TV and VCR set is able to assembled at low cost, because it
requires few external parts and no adjustment.
FEATURES
· TV system : NTSC
· PLL4 × multiplication circuit
· sync. tip clamping circuit
· Internal 8 bit A / D converter
· Internal 8 bit D / A converters (2 ch.)
· 1 H line memory
· Dynamic comb filter
· Color killer mode (Y / C separation OFF)
· DIP16 / SOP16 package
· 5 V single power supply
Weight
DIP16-P-300-2.54A : 1.00 g (Typ.)
SOP16-P-300-1.27 : 0.18 g (Typ.)
000707EBA1
· TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general
can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the
buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and
to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or
damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the
most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the “Handling
Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability Handbook” etc..
· The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal
equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are
neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or
failure of which may cause loss of human life or bodily injury (“Unintended Usage”). Unintended Usage include atomic energy
control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control
instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document
shall be made at the customer’s own risk.
· The products described in this document are subject to the foreign exchange and foreign trade laws.
· The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by
TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its
use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or
others.
· The information contained herein is subject to change without notice.
2001-01-16 1/11
1 page  
TC90A44P,45P/F
FUNCTION BLOCK DESCRIPTIONS
(1) Input clamp (CLAMP)
This is sync tip clamp circuit for composite signal.
This circuit makes feedback so that the min. data after A / D converter at Y / C separation equal to internal DC
bias level.
(2) A / D converter (ADC)
This is high speed series-parallel 8 bit A / D converter (Dynamic Range: 1.0V). Recommendable Input level is
0.75 Vp-p (Sync tip~white 100%).
(3) Line memory
This block is DRAM line memory for 1 H delay.
(4) Band-pass filter (BPF)
This filter extracts the signal of chrominance band from composite video signal. The center frequency is fsc.
(5) Dynamic comb filter (DCF)
This block is logical comb filter to extract the chrominance signal. Filtering logic applies a correlation of two
lines to reduce color dot crawl and cross color.
(6) Color killer circuit (KILLER)
This block is applied for black and white (B / W) signal regardless of have color burst or no color burts. When
pin 10 (KILLER) is “H ”, logic stop Y / C separation and output composite video signal from pin 14 (YOUT).
(7) PLL (4 times multiply clock generator)
This block is 4 times multiplier and makes 4fsc as system clock.
This block supplies system clock (4fsc) to each block via buffer and generates timing signal for memories.
(8) D / A converter (DAC)
This is high speed 8 bit D / A converter. Y output level is 1.73 Vp-p (Typ.).
C output level is 437 mVp-p (Typ.). (Input condition is 0.75Vp-p)
2001-01-16 5/11
5 Page 
PACKAGE DIMENSIONS
SOP16-P-300-1.27
TC90A44P,45P/F
Unit : mm
Weight : 0.18 g (Typ.)
2001-01-16 11/11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet TC90A44P.PDF ] | |
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