參數(shù)資料
型號(hào)： TA1275BFNG
元件分類： 顏色信號(hào)轉(zhuǎn)換
英文描述： COLOR SIGNAL DECODER, PDSO24
封裝： 0.300 INCH, 0.65 MM PITCH, PLASTIC, SSOP-24
文件頁(yè)數(shù)： 9/21頁(yè)
文件大?。?/td> 1249K
代理商： TA1275BFNG
TA1275BFNG
2005-03-14
17
Note
Item
Test Condition
17
Ext. Color Difference Gain
(1) : Input a 200 mVp-p, 15 kHz sine wave into Pin 14 and Pin 16.
(2) : Supply 4 V to Pin 6.
(3) : Measure the respective output amplitudes at Pin 9 and Pin 11: VEXTR and VEXTB.
(4) : Calculate : "GEXTR" = VEXTR / 200 mV
"GEXTB" = VEXTB / 200 mV
18
Gate Pulse Width Variable
Range
(1) : Input a 75% color bar (200 mVp-p at R ID) into Pin 20.
(2) : Connecting Pin 13 to GND via 1 k, observe the gate
pulse at Pin 13.
(3) : Measure the respective gate pulse widths for when Pin
4 is opened and for when it is connected to VCC / GND:
"WGP", "WGPVCC" and "WGPGND".
19
Y DL Characteristics
(1) : Connect Pin 13 to VCC via 10 k.
(2) : Connect Pin 8 to GND.
(3) : Measure the delay time between Pin 23 input and Pin 7 output, that is, "tYDL".
20
Y Trap Characteristics
(1) : Input a sweep signal with sync. (1 Vp-p).
(2) : Connect Pin 13 to VCC via 10 k.
(3) : Connect Pin 8 to VCC.
(4) : Observing the frequency response at Pin 7,
measure the frequency at which the attenuation is
maximum, that is, "f0Y5.5"; and measure the
attenuation at f0Y5.5 against that at 1 MHz, that is,
"GY5.5".
21
Y Input Dynamic Range
(1) : Connect Pin 13 to VCC via 10 k.
(2) : Increasing the amplitude of the Y signal input into Pin 23, measure the amplitude
at which the output signal from Pin 7 begins to be distorted, that is, "DRYS".
(3) : Open Pin 13.
(4) : Repeat (2), that is, "DRYBW".
22
Y Gain
(1) : Input a Y signal (picture period amplitude: 0.7 Vp-p) into Pin 23.
(2) : Connect Pin 13 to VCC via 10 k.
(3) : Measure the gain between Pin 23 input and Pin 7 output, that is, "GYS".
(4) : Open Pin 13.
(5) : Repeat (3), that is, "GYBW".
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