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TB1227CNG Datasheet(PDF) 67 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) 67 Page - Toshiba Semiconductor

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TB1227CNG
2004-05-24
67
TEST CONDITION (Unless otherwise specified : H, RGB VCC = 9V ; VDD, Fsc VDD, Y / C VCC = 5V ; Ta = 25±3°C ; BUS = preset value)
SW MODE
SUB-ADDRESS & BUS DATA
NOTE
ITEM
S21 S22 S31 S33 S34 S51
00H 02H
MEASURING METHOD
T4
Frequency
Characteristic
B
B
B
B
B
A
FFH 00H
(1) Input TG7 sine wave signal whose frequency is 6MHz and video
amplitude is 0.7V to pin 31 (Y IN).
(2) Input 0.3V synchronizing signal to pin 51 (Sync IN).
(3) Connect both pin 21 (Digital Ys) and pin 22 (Analog Ys) to ground.
(4) Set bus data so that contrast is maximum, Y sub contrast and drive
are set at each center value and color is minimum.
(5) Measure amplitude of pin 13 signal (G OUT) and find the output /
input gain (double) (G6M).
(6) From the results of the above step 5 and the Note T3, find the
frequency characteristic.
Gf = 20ℓog (G6M / G)


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