TA1276AFG Datasheet, PDF (49/83 Pages) Toshiba Semiconductor – PAL/NTSC Video Chroma And Deflection IC For CTV

TA1276AFG
Note
Parameter
Test Conditions (unless otherwise stated, V_CC1 = 5 V, V_CC2/V_CC3/DEF V_CC = 9 V, Ta = 25 ± 3°C)
Subaddress
Switching Mode
07
10
17
18 SW₅ SW₆ SW₁₃ SW₁₅
Test Conditions
Chroma Block
Chroma block common test conditions
SW₁₃: B, SW₁₅: C, SW₁₈: ON, SW₂₀: ON, SW₂₃: ON, SW₂₄: ON, SW₂₅: ON,
SW₃₃: A, SW₃₄: A, SW₃₅: A, SW₃₇: A, SW₃₈: A, SW₃₉: A, SW₄₆: ON
1) Input 3.58-NTSC rainbow signal (C-4 signal) burst/chroma signals with the same
burst/chroma amplitude to the chroma input pin (TP54).
C₁ ACC Characteristics
80
00
00
00 OPEN OPEN B
A 2) Measure the output amplitudes F₁₀, F₃₀, F₃₀₀, and F₆₀₀ of the UQ output pin 65
when the chroma input amplitude levels are set to 10, 30, 300, and 600 mV_p-p.
3) Calculate A = F₃₀/F₃₀₀.
1) Connect SW₁₃ to A.
2) Switch the color system mode (10) to 3.58 NTSC (00), 4.43 PAL (60), and M-PAL
(80) and measure the following for each of those cases.
C₂
APC Frequency Control
Sensitivity
↑
↑
↑
↑
↑
↑
A
↑ ^{3) Connect external voltage source (V11) to APC filter pin 58.}
4) Vary the voltage of the external voltage source (V₁₁) and observe the f_sc output pin
72 using a frequency counter.
5) Measure the free-run sensitivity β for the V₁₁ + ∆V₁₁ (100 mV) near the f_c.
(3.5 NTSC = β₃, 4.3; PAL = β₄; M-PAL = β_M)
1) Input 3.579545 MHz, 4.433619 MHz, and 3.575611 MHz continuous waves (200
mV_p-p to the chroma input pin (TP54).
2) Switch the color system mode (10) to 3.58 NTSC (00), 4.43 PAL (60), and M-PAL
C₃ APC Pull-In and Hold Range
↑
↑
↑
↑
↑
↑
↑
↑
(80), and measure the following for each of those cases.
3) Vary the input signal frequency in 10 Hz-steps within a range of ±3 kHz.
4) Clamp B/W → color mode (f*P*). While holding color → B/W mode (f*H*),
measure the ± deviations from the frequency at each continuous wave input.
C₄
SECAM Output DC Level
Change
1) Connect SW₁₃ to A.
00
or
2) Measure the output DC level of the SECAM control pin 3 when the color system
↑
C₀
30
↑
↑
↑
↑
↑
or
mode (10) is switched to 3.58 NTSC (00), 4.43 PAL (30), and SECAM (60).
(3.58 NTSC mode: SEN)
60
(4.43 PAL mode: SEP)
(SECAM mode: SES)
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2002-04-01