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參數(shù)資料
| 型號： | TA1276AF |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP80 |
| 封裝： | 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80 |
| 文件頁數(shù)： | 47/83頁 |
| 文件大?。?/td> | 1585K |
| 代理商： | TA1276AF |
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TA1276AF
2002-01-29
51
Test Conditions (unless otherwise stated, VCC1 = 5 V, VCC2/VCC3/DEF VCC = 9 V, Ta = 25 ± 3°C)
Switching Mode
Note
Parameter
SW33
SW34
SW35
SW37
SW38
SW39
SW51
SW52
SW53
Test Conditions
Text Block
Text block common test conditions
SW13: A, SW15: C, SW18: ON, SW20: ON,
SW23: ON, SW24: ON, SW25: ON
T1
AC Gain
A
B
A
1)
Input signal 1 (f0 = 100 kHz, picture period amplitude = 0.2 Vp-p) to pin 78.
2)
Measure the picture period amplitude of pins 15, 13, 11 (V41, V42, and
V43).
3)
GR = V43/0.2
GG = V42/0.2
GB = V41/0.2
T2
Unicolor Adjustment
Characteristics
↑
1)
Input signal 1 (f0 = 100 kHz, picture period amplitude = 0.2 Vp-p) to pin 78.
2)
Set the unicolor data to maximum (7F), center (40), and minimum (00) and
measure the pin 11 picture period amplitudes for each case.
(vuMAX, vuCNT, vuMIN)
3)
Calculate the unicolor maximum and minimum amplitude ratios using
digital conversion. (
vu)
T3
Brightness Adjustment
Characteristics
↑
1)
Input signal 2 to pin 78 and adjust the picture period amplitude output of
pin 11 to 1 Vp-p.
2)
Measure the voltage of pin 11 when the brightness is changed to
maximum (FF), center (80), and minimum (00). (VbrMAX, VbrCNT,
VbrMIN)
T4
Brightness Sensitivity
↑
1)
Using the results obtained from T3, calculate the brightness sensitivity
from the following formula.
2)
Gbr
= (VbrMAX VbrMIN)/256
T5
White Peak Slice Level
↑
1)
Change the bus data and set the sub-contrast to maximum.
2)
Connect an external power supply to pin 78 and increase the voltage
gradually from 5.8 V.
3)
Measure the picture period amplitude voltage of pin 11 when pin 11°s
picture period is clipped (Vwps1).
4)
Change the subaddress (05) data to (81) and repeat steps 1) to 3) above.
(Vwps2)
T6
Black Peak Slice Level
A
B
C
1)
Repeat step 1) of T5.
2)
Connect an external power supply to pin 78 and decrease the voltage
gradually from 5.8 V.
3)
Measure the voltages of pins 11, 13, and 15 when their picture periods are
clipped.
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