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參數(shù)資料
| 型號(hào)： | TB1227CNG |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP56 |
| 封裝： | 0.600 INCH, 1.78 MM PITCH, PLASTIC, SDIP-56 |
| 文件頁(yè)數(shù)： | 72/94頁(yè) |
| 文件大?。?/td> | 1291K |
| 代理商： | TB1227CNG |
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TB1227CNG
2004-05-24
74
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 S45 S39 S44
——
———
—
MEASURING METHOD
T24
DC Regeneration
B
A
B
A
B
A
—
(1) Short circuit pin 33 (B-Y IN) and pin 34 (R-Y IN) in AC coupling.
(2) Input such the step-up signal as shown below to pin 45 (Y IN) and
pin 51 (Sync IN).
(3) Connect pin 21 (Digital Ys) and pin 22 (Analog Ys) to ground.
(4) Set bus data so that contrast is maximum and DC transmission
correction factor is minimum.
(5) Adjust data on Y sub contrast so that video amplitude of pin 13
(G OUT) is 2.5V.
(6) While varying APL of the step-up signal from 10% to 90%,
measure change in voltage at the point A.
T25
RGB Output S / N
Ratio
↑
B
↑
—
———
—
(1) Short circuit pin 31 (Y IN), pin 33 (B-Y IN) and pin 34 (R-Y IN) in
AC coupling.
(2) Input synchronizing signal of 0.3V in amplitude to pin 51 (Sync IN).
(3) Connect pin 21 (Digital Ys) and pin 22 (Analog Ys) to ground.
(4) Set bus data on contrast at maximum.
(5) Set bus data on Y sub contrast at center value.
(6) Measure video noise level of pin 13 (G OUT) with oscilloscope
(no).
SNo = 20og (2.5 / (1 / 5) ×no)
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