參數(shù)資料
型號(hào)： AD8145YCPZ-R2
廠商： ANALOG DEVICES INC
元件分類(lèi)： 運(yùn)動(dòng)控制電子
英文描述： High Speed, Triple Differential Receiver with Comparators
中文描述： COMPARATOR, 6 ns RESPONSE TIME, QCC32
封裝： 5 X 5 MM, LEAD FREE, MO-220VHHD-2, LFCSP-32
文件頁(yè)數(shù)： 20/24頁(yè)
文件大?。?/td> 473K
代理商： AD8145YCPZ-R2
AD8145
COMPARATORS
In addition to general-purpose applications, the two on-chip
comparators can be used to decode video sync pulses from the
received common-mode voltages, or to receive differential digital
information. Built-in hysteresis helps to eliminate false triggers
from noise.
The comparator outputs are designed to drive source-terminated
transmission lines. The source termination technique uses a
resistor in series with each comparator output such that the sum
of the comparator source resistance (≈ 20 Ω) and the series
resistor equals the transmission line characteristic impedance.
The load end of the transmission line is high impedance. When
the signal is launched into the source termination, its initial
value is one-half of its source value, since its amplitude is
divided by two by the voltage divider formed by the source
termination and the transmission line. At the load, the signal
experiences nearly 100% positive reflection due to the high
impedance load, and is restored to nearly its full value. This
technique is commonly used in PCB layouts that involve high
speed digital logic.
An internal linear voltage regulator derives power for the
comparators from the positive supply; therefore, the AD8145
must always have a minimum positive supply voltage of 4.5 V.
SYNC PULSE EXTRACTION USING COMPARATORS
The AD8145 is particularly useful in keyboard, video, mouse
(KVM) applications. KVM networks transmit and receive
computer video signals, which typically comprise red, green,
and blue (RGB) video signals and separate horizontal and
vertical sync signals. Because the sync signals are separate and
Rev. 0 | Page 20 of 24
not embedded in the color signals, it is advantageous to
transmit them using a simple scheme that encodes them among
the three common-mode voltages of the RGB signals. The
AD8134 triple differential driver is a natural complement to the
AD8145 and performs the sync pulse encoding with the
necessary circuitry on-chip.
The AD8134 encoding equations are given in Equation
4
,
Equation
5
, and Equation
6
.
[
H
V
V
Red
CM
]
K
=
2
(
4
)
[
]
V
2
2
=
K
V
Green
CM
(
5
)
[
V
]
H
K
V
Blue
CM
+
=
2
(
6
)
where:
Red V
CM
,
Green V
CM
, and
Blue V
CM
are the transmitted common-
mode voltages of the respective color signals.
K
is an adjustable gain constant that is set by the AD8134.
V
and
H
are the vertical and horizontal sync pulses, defined
with a weight of 1 when the pulses are in their low states, and a
weight of +1 when they are in their high states.
The AD8134 data sheet contains further details regarding the
encoding scheme. Figure 44 illustrates how the AD8145
comparators can be used to extract the horizontal and vertical
sync pulses that are encoded on the RGB common-mode
voltages by the AD8134.
RECEIVED
RED VIDEO
HSYNC
RED CMV
GREEN CMV
BLUE CMV
50
50
1k
1k
VSYNC
RECEIVED
GREEN VIDEO
50
50
RECEIVED
BLUE VIDEO
50
50
R
S
R
S
475
47pF
47pF
0
Figure 44. Extracting Sync Signals from Received Common-Mode Signal
相關(guān)PDF資料
PDF描述
AD8145YCPZ-R7 High Speed, Triple Differential Receiver with Comparators
AD8145YCPZ-RL High Speed, Triple Differential Receiver with Comparators
AD8153 3.2 Gbps Single Buffered Mux/Demux Switch
AD8153_07 3.2 Gbps Single Buffered Mux/Demux Switch
AD8153ACPZ 3.2 Gbps Single Buffered Mux/Demux Switch
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD8145YCPZ-R7 功能描述:IC RECEIVER TRIPLE DIFF 32LFCSP RoHS:是 類(lèi)別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 產(chǎn)品培訓(xùn)模塊:RS-232 & USB Transceiver 標(biāo)準(zhǔn)包裝:2,000 系列:- 類(lèi)型:收發(fā)器 驅(qū)動(dòng)器/接收器數(shù):1/1 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類(lèi)型:表面貼裝 封裝/外殼:16-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:16-SSOP 包裝:帶卷 (TR) 其它名稱(chēng):296-19849-2
AD8145YCPZ-RL 功能描述:IC RECEIVER TRIPLE DIFF 32LFCSP RoHS:是 類(lèi)別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:27 系列:- 類(lèi)型:收發(fā)器 驅(qū)動(dòng)器/接收器數(shù):3/3 規(guī)程:RS232，RS485 電源電壓:4.75 V ~ 5.25 V 安裝類(lèi)型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC 包裝:管件
AD8146 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Triple Differential Driver for Wideband Video
AD8146ACPZ-R2 功能描述:IC DRIVER TRPL DIFF VID 24LFCSP RoHS:是 類(lèi)別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 應(yīng)用:TFT-LCD 面板：VCOM 驅(qū)動(dòng)器 輸出類(lèi)型:滿(mǎn)擺幅 電路數(shù):1 -3db帶寬:35MHz 轉(zhuǎn)換速率:40 V/µs 電流 - 電源:3.7mA 電流 - 輸出 / 通道:1.3A 電壓 - 電源，單路/雙路(±):9 V ~ 20 V，±4.5 V ~ 10 V 安裝類(lèi)型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬）裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:8-uMax-EP 包裝:管件
AD8146ACPZ-R7 功能描述:IC DRIVER TRIPLE DIFF 24-LFCSP RoHS:是 類(lèi)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(lèi)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(lèi)型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:20-QFN 裸露焊盤(pán)（4x4） 包裝:帶卷 (TR)
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。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(gòu)。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(gòu)

我的聯(lián)系方式

*
*
*