參數(shù)資料
型號(hào): AD8091ARZ
廠商: Analog Devices Inc
文件頁(yè)數(shù): 8/21頁(yè)
文件大小: 0K
描述: IC OPAMP VF R-R LDIST LP 8SOIC
標(biāo)準(zhǔn)包裝: 98
放大器類型: 電壓反饋
電路數(shù): 1
輸出類型: 滿擺幅
轉(zhuǎn)換速率: 170 V/µs
-3db帶寬: 110MHz
電流 - 輸入偏壓: 1.4µA
電壓 - 輸入偏移: 1800µV
電流 - 電源: 4.8mA
電流 - 輸出 / 通道: 45mA
電壓 - 電源,單路/雙路(±): 3 V ~ 12 V,±1.5 V ~ 6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 8-SO
包裝: 管件
產(chǎn)品目錄頁(yè)面: 770 (CN2011-ZH PDF)
AD8091/AD8092
Rev. C | Page 15 of 20
Some circuits use a sync tip clamp to hold the sync tips at a
relatively constant level to lower the amount of dynamic signal
swing required. However, these circuits can have artifacts like
sync tip compression unless they are driven by a source with a
very low output impedance. The AD8091/AD8092 have
adequate signal swing when running on a single 5 V supply to
handle an ac-coupled composite video signal.
The feedback circuit provides unity gain for the dc biasing of
the input and provides a gain of 2 for any signals that are in the
video bandwidth. The output is ac-coupled and terminated to
drive the line.
The capacitor values provide minimum tilt or field time
distortion of the video signal. These values are required for
video that is considered to be studio or broadcast quality.
However, if a lower consumer grade of video, sometimes
referred to as consumer video, is all that is desired, the values
and the cost of the capacitors can be reduced by as much as a
factor of 5 with minimum visible degradation in the picture.
The input to the circuit shown in Figure 36 is a standard
composite (1 V p-p) video signal that has the blanking level at
ground. The input network level shifts the video signal by
means of ac coupling. The noninverting input of the op amp is
biased to half of the supply voltage.
0285
9-
0
36
AD8091
5V
+
4.99k
10F
47F
+
4.99k
10k
RT
75
RG
1k
RF
1k
RBT
75
RL
75
VOUT
COMPOSITE
VIDEO IN
+
220F
0.1F
3
2
4
6
7
1000F
0.1F
10F
+
Figure 36. Single-Supply Composite Video Line Driver
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