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): 33/83頁
文件大?。?/td> 1585K
代理商: TA1276AF
TA1276AF
2002-01-29
39
Test Conditions (unless otherwise stated, VCC1 = 5 V, VCC2/VCC3/DEF VCC = 9 V, Ta = 25 ± 3°C)
Switching Mode
Note
Parameter
SW15
SW49
SW50
SW53
Test Conditions
V5
D.ABL Detect Voltage
C
OFF
A
C
1)
Set the BUS control data to the preset value.
2)
Turn the Y mute off (1), set the ABL sensitivity to the minimum (000), set the D.ABL sensitivity to the maximum (111),
and turn the black stretch gain off (1).
3)
Connect pin 8 to an external power supply (PS) and decrease the voltage from 6.5 V.
4)
Repeat 3) when the D.ABL detect voltage bus data are 000, 001, 010, and 100 respectively. Measure PS voltages
V000, V001, V010, and V100 when the picture period of pin 3 changes to low. (enlarge the range before measuring.)
5)
Next, calculate the
V001, V010, and V100 voltage differentials from V000 and V001, V010, and V100.
V*** = V000 V001 (V010, V100)
Pin 38
Pin 3 Detected
Pin 3 Undetected
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