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| 型號： | ADV7180 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 10-Bit, 4 x Oversampling SDTV Video Decoder |
| 中文描述： | 10位，4個采樣標(biāo)清視頻解碼器 |
| 文件頁數(shù)： | 18/112頁 |
| 文件大小： | 1320K |
| 代理商： | ADV7180 |
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ADV7180
ANTIALIASING FILTERS
The ADV7180 has optional on-chip antialiasing filters on each
of the three channels that are multiplexed to the ADC (see
Figure 12). The filters are designed for standard definition video
up to 10 MHz bandwidth. Figure 13 and Figure 14 show the
filter magnitude and phase characteristics.
The antialiasing filters are enabled by default and the selection
of INSEL[3:0] determines which filters are powered up at any
given time. For example, if CVBS mode is selected, the filter
circuits for the remaining input channels are powered down to
conserve power. However, the antialiasing filters can be disabled
or bypassed using the AA_FILT_MAN_OVR control.
Rev. A | Page 18 of 112
A
IN
1
A
IN
2
A
IN
3
A
IN
4
1
A
IN
5
1
A
IN
6
1
AA
FILTER 1
AA
FILTER 2
AA
FILTER 3
10-BIT, 86MHz
ADC
M
SHA
A/D
0
1
ONLY AVAILABLE IN 64-LEAD PACKAGE
Figure 12. Antialias Filter Configuration
AA_FILT_MAN_OVR, Antialiasing Filter Override,
Address 0xF3 [3]
This feature allows the user to override the antialiasing filters
on/off settings, which are automatically selected by INSEL[3:0].
AA_FILT_EN, Antialiasing Filter Enable, Address 0xF3 [2:0]
These bits allow the user to enable or disable the antialiasing
filters on each of the three input channels multiplexed to the
ADC. When disabled, the analog signal bypasses the AA filter
and is routed directly to the ADC.
AA_FILT_EN, Address 0xF3 [0]
When AA_FILT_EN[0] is 0, AA Filter 1 is bypassed.
When AA_FILT_EN[0] is 1, AA Filter 1 is enabled.
AA_FILT_EN, Address 0xF3 [1]
When AA_FILT_EN[1] is 0, AA Filter 2 is bypassed.
When AA_FILT_EN[1] is 1, AA Filter 2 is enabled.
AA_FILT_EN, Address 0xF3 [2]
When AA_FILT_EN[2] is 0, AA Filter 3 is bypassed.
When AA_FILT_EN[2] is 1, AA Filter 3 is enabled.
0
–36
1k
100M
0
FREQUENCY (Hz)
10k
100k
1M
10M
–4
–8
–12
–16
–20
–24
–28
–32
Figure 13. Antialiasing Filter Magnitude Response
0
–150
1k
100M
0
FREQUENCY (Hz)
10k
100k
1M
10M
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
Figure 14. Antialiasing Filter Phase Response
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADV7180BCPZ | 10-Bit, 4 x Oversampling SDTV Video Decoder |
| ADV7180BSTZ | 10-Bit, 4 x Oversampling SDTV Video Decoder |
| ADV7181 | Multiformat SDTV Video Decoder |
| ADV7181B | Multiformat SDTV Video Decoder |
| ADV7181BBCPZ | Multiformat SDTV Video Decoder |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADV7180_12 | 制造商:AD 制造商全稱:Analog Devices 功能描述:10-Bit, 4?? Oversampling SDTV Video Decoder |
| ADV7180BCP32Z | 制造商:Analog Devices 功能描述:10-BIT, 4? OVERSAMPLING SDTV VIDEO DECODER - Trays |
| ADV7180BCP32Z-RL | 制造商:Analog Devices 功能描述:IC |
| ADV7180BCPZ | 功能描述:IC VIDEO DECODER SDTV 40-LFCSP RoHS:是 類別:集成電路 (IC) >> 線性 - 視頻處理 系列:- 標(biāo)準(zhǔn)包裝:250 系列:- 類型:電平移位器 應(yīng)用:LCD 電視機(jī)/監(jiān)控器 安裝類型:表面貼裝 封裝/外殼:28-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:28-WQFN（4x4）裸露焊盤 包裝:帶卷 (TR) 其它名稱:296-32523-2TPS65198RUYT-ND |
| ADV7180BCPZ | 制造商:Analog Devices 功能描述:IC VIDEO DECODER 10BIT 57.27MSPS LFCSP40 |
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