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TB1227CNG Datasheet(PDF) 58 Page - Toshiba Semiconductor

Part No. TB1227CNG
Description  VIDEO, CHROMA AND SYNCHRONIZING SIGNALS PROCESSING IC FOR PAL / NTSC / SECAM SYSTEM COLOR TV
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Maker  TOSHIBA [Toshiba Semiconductor]
Homepage  http://www.semicon.toshiba.co.jp/eng
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TB1227CNG Datasheet(HTML) 58 Page - Toshiba Semiconductor

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TB1227CNG
2004-05-24
58
TEST CONDITION
Unless otherwise specified : H, RGB VCC = 9V ; VDD, Fsc VDD, Y / C VCC = 5V ; Ta = 25±3°C ; BUS = preset value ;
pin 51 input video signal = 50 system
(Note) “×” in the data column represents preset value at power ON.
NOTE
ITEM
SUB-ADDRESS & BUS DATA
MEASURING METHOD
DV4
V. Amplification
Degree
DV5
V. Amplifier Max.
Output
DV6
V. Amplifier Min.
Output
Sub 1BH
1
1
×
×
×
×
×
×
(1) Set bus data as indicated on the left.
(2) Change 5.0V of pin 54 voltage by +0.1V and −0.1V, and measure V53 output voltage in both the
conditions.
(3) Find GVA shown in the figure below.
(4) Measure Vvmax and Vvmin shown in the figure below.
DV7
V. S-Curve
Correction, Max.
Correction Quantity
Sub 19H
1
1
1
1
1
1
1
×
(1) Adjust the oscilloscope’s amplitude with the UNCAL so that pin 52 and pin 54 waveforms overlap each
other as the bus data is set to the preset value.
(2) Change the bus data as indicated on the left, and measure values of X and Y shown in the figure below.
(3) Find VS according to the equation that VS = (X / Y)×100%.


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