AD8122

量产

具有300M可调电缆均衡特性的三通道差分接收器

数据手册 (Rev. 0) 产品选型表

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产品详情

电缆补偿长度可达300米，适合宽带视频
-- 60 MHz均衡带宽（300米UTP电缆）
-- 120 MHz均衡带宽（150米UTP电缆）
快速时域性能
-- 1%建立时间：70 ns（300米UTP电缆）
-- 上升/下降时间：7 ns（2 V步进，300米UTP电缆）
三个频率响应增益调整引脚
-- 高频峰值调整 (V_PEAK)
-- 输出低通滤波器截止频率调整(V_FILTER)
-- 宽带平坦增益调整(V_GAIN)
可选择UTP或同轴补偿

直流输出失调调整(V_OFFSET)
低输出失调电压：±4 mV (G = 1)
RGB和YPbPr均可补偿
两个具有迟滞特性的片内比较器
-- 可用于共模同步提取
采用40引脚、6 mm × 6 mm LFCSP封装

参考资料

数据手册 1

AD8122: Triple Differential Receiver with 300m Adjustable Line Equalization Datasheet (Rev.0) 05/21/2012

应用笔记 1

AN-2543: Complete Broadband Video-over-UTP Driver and Receiver Solution for RGB, YPbPr, and More 08/16/2024

申请保密协议

通过UTP信号链传输视频的完整解决方案

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评估套件

AD8122 Evaluation Board

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特性和优点

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 70 nsec settling time to 1% with 300 meters of UTP cable 7 ns rise/fall times with 2 V step @ 300 meters of UTP cable
Selectable for UTP or coax compensation 3 frequency response gain adjustment pins
Compensates both RGB and YPbPr

High frequency peaking adjustment (VPEAK) Output lowpass filter cutoff adjustment (VFILTER) >Broadband flat gain adjustment (VGAIN)
DC output offset adjust (VOFFSET) Low output offset voltage: ±4 mV @ G = 1
Two on-chip comparators with hysteresis
Can be used for common-mode sync extraction
Available in 40-lead, 6 mm × 6 mm LFCSP

产品详情

The AD8122 is a high-speed, triple differential receiver and equalizer designed to compensate for signal loss in UTP cables (up to 300m) and coaxial cables (up to 200m) by adjusting gain stages to counteract cable frequency response. It features high impedance differential inputs with excellent common-mode rejection for direct cable interfacing, and provides control inputs for cable compensation, filter adjustment, cable type selection, and DC output offset. The device also offers selectable gain (1 or 2) and is available in a 40-lead LFCSP, operating in a temperature range of −40°C to +85°C.