參數(shù)資料
型號(hào)： EL4093CN
元件分類： 視頻放大器
英文描述： 300 MHz DC-Restored Video Amplifier
中文描述： 300兆赫的DC -恢復(fù)視頻放大器
文件頁數(shù)： 16/16頁
文件大小： 342K
代理商： EL4093CN
EL4093C
300 MHz DC-Restored Video Amplifier
Applications Information
Product Description
The EL4093C is a high speed DC-restore system
containing a current feedback amplifier (CFA)
and a sample
hold (SH) amplifier The CFA
offers a wide 3 dB bandwidth of 300 MHz and a
slew rate of 1500 V
ms making it ideal for high
speed video applications such as SVGA
The
CFA’s excellent differential gain and phase at
358 MHz also makes it suitable for NTSC appli-
cations Drawing only 95 mA on g5V supplies
the EL4093C serves as an excellent choice for
those applications requiring both low power and
high bandwidth
The connection between the CFA and sample
hold (the Autozero interface) has been greatly
simplified The output of the sample
hold is a
high impedance current source allowing direct
connection to the CFA inverting input for au-
tozero purposes
In addition
special circuitry
within the sample
hold provides a charge cur-
rent of 85 mA in sample mode resulting in a
sample hold current ratio (ratio of charging cur-
rent to droop current) of approx 1000000
Theory of Operation
In video applications DC restoration moves the
backporch or black level to a fixed DC reference
The EL4093C uses a CFA in feedback with a
sample
hold to provide DC restoration Figure
1 shows how the two are connected to provide
this function the SH compares the output of
the CFA to a DC reference and any difference
between them causes an output current from the
SH This ‘‘a(chǎn)utozero’’ current is fed to the CFA
inverting input the effect of which is to move the
CFA output towards the reference voltage This
autozero mechanism settles when the CFA out-
put is one VOS away from the reference (the VOS
here refers to the SH offset voltage)
44093 – 3
Figure 1
The autozero mechanism is typically active for
only a short period of each video line Figure 2
shows a NTSC video signal along with the
EL4581C back porch output The back porch sig-
nal is used to drive the HOLD input of the
EL4093C and we see that the EL4093C is in
sample mode for only 35
ms of each line It is
during this time that the autozero mechanism at-
tempts to drive the CFA output towards the ref-
erence voltage at the same time putting a correc-
tion voltage onto the hold capacitor CHOLD
During the rest of the line (60
ms) the EL4093C is
in hold mode but DC correction is maintained by
the voltage on CHOLD
44093 – 37
Figure 2
9
相關(guān)PDF資料
PDF描述
EL4093CS 300 MHz DC-Restored Video Amplifier
EL4093C 300 MHz DC-Restored Video Amplifier(300MHz 直流恢復(fù)放大器)
EL4094C Video Gain Control/Fader(視頻增益控制器/信號(hào)漸弱器)
EL4094 Video Gain Control/Fader
EL4094CN Video Gain Control/Fader
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
EL4093CS 功能描述:IC VIDEO AMP 300MHZ 16-SOIC RoHS:否 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:驅(qū)動(dòng)器 輸出類型:差分 電路數(shù):3 -3db帶寬:350MHz 轉(zhuǎn)換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR)
EL4093CS-T13 功能描述:IC VIDEO AMP 300MHZ 16-SOIC RoHS:否 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:驅(qū)動(dòng)器 輸出類型:差分 電路數(shù):3 -3db帶寬:350MHz 轉(zhuǎn)換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR)
EL4093CS-T7 功能描述:IC VIDEO AMP 300MHZ 16-SOIC RoHS:否 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:驅(qū)動(dòng)器 輸出類型:差分 電路數(shù):3 -3db帶寬:350MHz 轉(zhuǎn)換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR)
EL4093CSZ 功能描述:IC VIDEO AMP 300MHZ 16-SOIC RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:驅(qū)動(dòng)器 輸出類型:差分 電路數(shù):3 -3db帶寬:350MHz 轉(zhuǎn)換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR)
EL4093CSZ 制造商:Intersil Corporation 功能描述:Video Buffer / Amplifier IC
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*