TA1310ANG Datasheet, PDF (42/106 Pages) Toshiba Semiconductor – NTSC VIDEO, CHROMA, DEFLECTION, AND DISTORTION COMPENSATION IC (WITH YUV INTERFACE AND ACB)

TA1310ANG
NOTE
ITEM
P₁₇ Sharpness Control Range
P₁₈
Sharpness Control Center
Characteristics
SW MODE
SW₅₄ SW₅₅ SW₅₆
1)
2)
3)
4)
A
B OPEN
5)
6)
7)
1)
2)
A
B OPEN ³⁾
4)
(TEST CONDITIONS V_CC = 9 V / 5 V, Ta = 25 ± 3°C)
MEASUREMENT METHOD
Set the bus control data to the preset value.
Set SW₅₄ to A and input a sine wave to TP54A.
Set the amplitude of #54 to 20 mV_p-p.
Set the unicolor to the maximum (111111), the brightness to the center (1000000), RGB cutoff to the center
(10000000), and turn the Y mute off (0).
Set the picture sharpness to the maximum (111111). Connect an emitter-follower to TP13 (R OUT). When the
frequencies are 100 kHz and 2.4 MHz, measure the respective V₁₀₀ and V₂₄ amplitudes.
Next, set the picture sharpness to the minimum (000000). As in 5), when the frequencies are 100 kHz and 2.4
MHz, measure the V₁₀₀ and V₂₄ amplitudes respectively.
Calculate G_MAX and G_MIN from the following formula.
G_MAX, G_MIN [dB] = 20 × ℓog (V₂₄ ÷ V₁₀₀)
Repeat steps 1) to 4) of P₁₇.
Set the picture sharpness to the center (100000)
Connect an emitter-follower to TP13 (R OUT). When the frequencies are 100 kHz and 2.4 MHz, measure the
V₁₀₀ and V₂₄ amplitudes respectively.
Calculate G_CEN from the following formula.
G_CEN [dB] = 20 × ℓog (V₂₄ ÷ V₁₀₀)
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