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TB1227CNG Datasheet(PDF) 82 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) 82 Page - Toshiba Semiconductor

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TB1227CNG
2004-05-24
82
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
06H
MEASURING METHOD
T53
Analog RGB AC Gain
B
A
B
B
B
A
———
———
In the setting condition of the Note T52, calculate output / input gain
(double) with contrast data being set maximum.
G = Vc13mx / 0.5V
T54
Analog RGB
Frequency
Characteristic
FFH
———
(1) Input 0.3V synchronizing signal to pin 51 (Sync IN).
(2) Supply 5V of external supply voltage to pin 22 (Analog Ys).
(3) Input TG7 sine wave signal (f = 100kHz, video amplitude = 0.5V) to
pin 24 (Analog G IN).
(4) Set bus data so that contrast is maximum and drive is set at center
value.
(5) Measure video amplitude of pin 13 (G OUT) and calculate output /
input gain (double) (G6M).
(6) From measurement results of the above step 5 and the preceding
Note 53, find frequency characteristic.
Gf = 20ℓog (G6M / G)


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