ta1310ang TOSHIBA Semiconductor CORPORATION, ta1310ang Datasheet - Page 37

• Manufacturer Part Number: ta1310ang
• Description: Ntsc Video, Chroma, Deflection, And Distortion Compensation Ic With Yuv Interface And Acb
• Manufacturer: TOSHIBA Semiconductor CORPORATION

NOTE
Note 1: When testing, see the picture sharpness test circuit diagram. First turn ACB mode off (bus control).
Note 2: Ensure the composite signal is always input to pin 38 (SYNC IN).
P
P
10
11
Black Peak Detection Level
Black Level Compensation
ITEM
SW
C
C
54
SW MODE
SW
A
C
55
OPEN
OPEN
SW
56
1)
2)
3)
1)
2)
3)
4)
5)
Set the bus control data to the preset value.
Set SW
the black level compensation on (set the black stretch start point to 000).
Observe #56, measure ∆V, and calculate the following formula.
Set the bus control data to the preset value.
Turn the Y mute off (0) and connect #54 to an external power supply (PS).
Turn the black level correction on (set the black stretch start point to 000).
Increase the PS from 3V and measure the voltage VBP of #56 where the DC level of the picture period of #55
shifts from high to low.
Calculate ∆VBP from the following formula.
∆VBP = VBP − V
B
LC
[(IRE)] = (∆V [mV] ÷ (0.7 × 10
54
to C (connect the Y input to AC-GND), set SW
(TEST CONDITIONS V
56
37
3
) [mV]) × 100 [(IRE)]
CC
MEASUREMENT METHOD
= 9 V / 5 V, Ta = 25 ± 3°C)
55
to A (maximum gain), turn the Y mute off (0), and turn
TA1310ANG
2005-09-20