AD8123ACPZ:  Triple Differential Receiver with Adjustable Line Equalization LFCSP-40封装

The AD8123 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. Logic circuitry inside the AD8123 controls the gain functions of the individual stages so that the lowest noise can be achieved at short-to-medium cable lengths. This technique optimizes its performance for low noise, short-to-medium range applications, while at the same time provides the high gain bandwidth required for long cable equalization (up to 300 meters). Each channel features a high impedance differential input that is ideal for interfacing directly with the cable.

The AD8123 has three control pins for optimal cable compensation, as well as an output offset adjust pin. Two voltage-controlled pins are used to compensate for different cable lengths; the VPEAK pin controls the amount of high frequency peaking and the VGAIN pin adjusts the broadband flat gain, which compensates for the low frequency flat cable loss.

For added flexibility, an optional pole adjustment pin, VPOLE, allows movement of the pole locations, allowing for the compensation of different gauges and types of cable as well as variations between different cables and/or equalizers. The VOFFSET pin allows the dc voltage at the output to be adjusted, adding flexibility for dc-coupled systems.

The AD8123 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.

产品应用领域 Applications
AD8123ACPZ 特点
AD8123ACPZ 功能框图

芯片引脚定义图

AD8123ACPZ 技术指标
-3 dB BW (MHz) 120MHz Supply Current 132mA
Package 40-Lead LFCSP Pos Supply +4.5V to +5.5V
AD8123 订购指南
产品型号 产品状态 封装 引脚 温度范围
AD8123ACPZ 量产 40 ld LFCSP (6x6mm w/4.3mm pad) 40 工业
AD8123ACPZ-R7 量产 40 ld LFCSP (6x6mm w/4.3mm pad) 40 工业
AD8123ACPZ-RL 量产 40 ld LFCSP (6x6mm w/4.3mm pad) 40 工业
AD8123ACPZ 应用技术支持与电子电路设计开发资源下载
  1. 音频和视频产品系列AD8123 数据手册DataSheet 下载 . pdf
  2. ADI 模拟器件公司比较器产品选型指南 . pdf
  3. Analog Devices, Inc. 美国模拟器件公司产品订购手册 .pdf