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AD8122

更新时间： 2024-02-05 05:51:08
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亚德诺 - ADI /
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13页 388K
描述
Triple Differential Receiver

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AD8122 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：QCCN, LCC40,.24SQ,20
针数：40Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.47接口集成电路类型：LINE RECEIVER
JESD-30 代码：S-PQCC-N40JESD-609代码：e3
湿度敏感等级：3标称负供电电压：-5 V
端子数量：40最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：QCCN封装等效代码：LCC40,.24SQ,20
封装形状：SQUARE封装形式：CHIP CARRIER
峰值回流温度（摄氏度）：260电源：+-5 V
认证状态：Not Qualified最大接收延迟：
子类别：Line Driver or Receivers标称供电电压：5 V
表面贴装：YES技术：BIPOLAR
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：QUAD处于峰值回流温度下的最长时间：30
Base Number Matches：1

AD8122 数据手册

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Triple Differential Receiver with  
300m Adjustable Line Equalization  
Preliminary Technical Data  
AD8122  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
V
V
V V  
OFFSET GAIN  
Compensates cables to 300 meters for wideband video  
60 MHz Equalized BW @ 300 meters of UTP Cable  
120 MHz Equalized BW @ 150 meters of UTP Cable  
Fast time domain performance  
PEAK  
FILTER  
COAX/UTP  
70 ns settling time to 1% with 300 meters of UTP cable  
7 ns rise/fall times with 2 V step @ 300 meters of UTP cable  
Three frequency response gain adjustment pins  
–IN  
R
OUT  
R
+IN  
R
GAIN  
High frequency peaking adjustment (VPEAK  
Output lowpass filter cutoff adjustment (VFILTER  
Broadband flat gain adjustment (VGAIN  
Selectable for UTP or coax compensation  
DC output offset adjust (VOFFSET  
)
R
)
–IN  
G
OUT  
G
)
+IN  
G
GAIN  
OUT  
G
)
–
IN  
B
Low output offset voltage: 4 mV @ G = 1  
Compensates both RGB and YPbPr  
B
+IN  
B
Two on-chip comparators with hysteresis  
GAIN  
B
Can be used for common-mode sync extraction  
Available in 40-lead, 6 mm × 6 mm LFCSP  
–IN  
+IN  
–IN  
+IN  
CMP1  
CMP1  
CMP2  
CMP2  
OUT  
CMP1  
APPLICATIONS  
OUT  
Keyboard-video-mouse (KVM)  
Digital signage  
CMP2  
AD8122  
RGB video over UTP cables  
Professional video projection and distribution  
HD video  
Figure 1.  
Security video  
GENERAL DESCRIPTION  
frequency peaking and the VGAIN input adjusts the broadband  
The AD8122 is a triple, high speed, differential receiver and  
equalizer that compensates for the transmission losses of UTP  
and coaxial cables up to 300 meters in length. Various gain  
stages are summed together to best approximate the inverse  
frequency response of the cable. Each channel features a high  
impedance differential input that is ideal for interfacing directly  
with the cable.  
flat gain, which compensates for the flat cable loss. The VFILTER  
input controls the cutoff frequency of output lowpass filters on  
each channel. Selection between UTP and coaxial cable  
compensation responses is determined by the binary  
COAX/  
input, which can be left floating in UTP  
UTP  
applications. The VOFFSET pin allows the dc voltage at the output  
to be adjusted, which can be useful in dc-coupled systems.  
The AD8122 has two control inputs for optimal cable  
compensation, one LPF control input, an input to select  
between UTP and coax cable, and an output offset adjust input.  
The cable compensation inputs are used to compensate for  
different cable lengths; the VPEAK input controls the amount of high  
For added flexibility, the gains of each channel can be set to x1  
or x2 using the associated GAIN control pins.  
The AD8122 is available in a 6 mm × 6 mm, 40-lead LFCSP and  
is rated to operate over the extended temperature range of  
−40°C to +85°C.  
Rev. PrC  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rightsof third parties that may result fromits use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks andregisteredtrademarks are the property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2012 Analog Devices, Inc. All rights reserved.  
 
 
 
 
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