TA1310ANG Datasheet, PDF (34/106 Pages) Toshiba Semiconductor – NTSC VIDEO, CHROMA, DEFLECTION, AND DISTORTION COMPENSATION IC (WITH YUV INTERFACE AND ACB)

TEST CONDITIONS
Video stage
NOTE
ITEM
#54 Voltage
P_{1 (Y Input Pedestal Clamp}
Voltage)
P₂ #55 Voltage
P₃ #56 Voltage
P₄ #1 Voltage
P₅
Y Input Pedestal Clamp
Error Voltage
SW MODE
SW₅₄ SW₅₅ SW₅₆
(TEST CONDITIONS V_CC = 9 V / 5 V, Ta = 25 ± 3°C)
MEASUREMENT METHOD
1) Set the bus control data to the preset value.
C OPEN OPEN
2) Measure the #54 DC voltage V₅₄.
1) Set the bus control data to the preset value.
C OPEN OPEN
2) Measure the #55 DC voltage V₅₅.
1) Set the bus control data to the preset value.
C OPEN OPEN
2) Measure the #56 DC voltage V₅₆.
1) Set the bus control data to the preset value.
C OPEN ON
2) Measure the #1 DC voltage V₁.
1) Set the bus control data to the preset value.
2) Set SW₅₄ to C (connect the Y input to AC-GND).
3) Measure #56 with an oscilloscope as shown in the diagram and calculate∆VPC.
4) Calculate the voltage differences∆VPC1 and∆VPC0 when the Y mute is on (1) and off (0).
C OPEN OPEN
TA1310ANG
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).
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2005-09-20