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參數資料
型號: TVP5150PBSR
廠商: TEXAS INSTRUMENTS INC
元件分類: 顏色信號轉換
英文描述: COLOR SIGNAL DECODER, PQFP32
封裝: GREEN, PLASTIC, TQFP-32
文件頁數: 8/68頁
文件大小: 917K
代理商: TVP5150PBSR
Functional Description
10
May 2006
SLES043A
f Frequency MHz
40
35
30
25
20
15
10
5
0
5
10
01234567
No Notch Filter
Notch3 Filter
Notch1 Filter
f Frequency MHz
40
35
30
25
20
15
10
5
0
5
10
01234567
Amplitude
dB
Amplitude
dB
Figure 33. Chroma Trap Filter Frequency
Response, NTSC ITUR BT.601 Sampling
Figure 34. Chroma Trap Filter Frequency
Response, PAL ITUR BT.601 Sampling
Notch2 Filter
No Notch Filter
Notch2 Filter
Notch1 Filter
Notch3 Filter
3.7
Color Low-Pass Filter
In some applications, it is desirable to limit the U/V bandwidth to avoid crosstalk. This is especially true in case
of nonstandard video signals that have asymmetrical U/V sidebands. In this case, notch filters are provided
that limit the bandwidth of the U/V signals.
Notch filters are needed when the comb filtering turns off, due to extreme color transitions in the input image.
The response of these notch filters is shown in Figure 35. The notch filters have three options that allow three
different frequency responses based on the color frequency characteristics of the input video.
f Frequency MHz
70
60
50
40
30
20
10
0
10
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Amplitude
dB
No Notch Filter
3 dB @ 1.412 MHz
Notch3 Filter
3 dB @ 554 kHz
Notch2 Filter
3 dB @ 844 kHz
Notch1
Filter 3 dB
@ 1.03 MHz
Figure 35. Color Low-Pass Filter With Notch Filter Characteristics, NTSC/PAL ITUR BT.601 Sampling
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相關代理商/技術參數
參數描述
TVP5150PBSRG4 制造商:Texas Instruments 功能描述:
TVP5151 制造商:TI 制造商全稱:Texas Instruments 功能描述:Ultralow-Power NTSC/PAL/SECAM Video Decoder
TVP5151EVM 功能描述:視頻 IC 開發工具 TVP5151 Eval Mod RoHS:否 制造商:Texas Instruments 產品:Evaluation Boards 類型:YPbPr to RGBHV Converters 工具用于評估:LMH1251 工作電源電壓:5 V
TVP5151IPBS 功能描述:視頻 IC UltraLo-Pwr NTSC/ RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel
TVP5151IPBSR 功能描述:視頻 IC UltraLo-Pwr NTSC/PAL SECAM Vid Dec RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel
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