ADI ADN4624四通道信号隔离LVDS 2.5 Gbps缓冲器解决方案

ADI公司的ADN4624是四通道信号隔离式低压差模信号(LVDS)缓冲器, 数据速率高达2.5 Gbps,并且具有极低的抖动.该器件集成了ADI公司的iCoupler®技术, 针对高速运行进行了增强,可提供LVDS信号链的插入式电气隔离. 到LVDS接收器和来自LVDS驱动器的交流耦合和/或电平转换允许隔离其他高速信号. ADN4624包括一种刷新机制,用于监控输入和输出状态,并确保它们在没有数据转换的情况下(例如上电时)保持不变.隔离电压5.7 kV rms和1.5 kV rms LVDS隔离器,和TIA/EIA-644-A LVDS信号电平兼容,四路总带宽为10Gbps,典型传输时延2.15ns,典型抖动为0.82 psrms随机, 40 ps总峰值.低电压1.8V电源,隔离阻挡层±8 kV IEC 61000-4-2 ESD保护,共模瞬态免疫为100 kV/μs.工作温度−40°C 到 +125°C.6 mm × 6 mm LFCSP 封装.主要用在隔离视频和成像数据,模拟前端隔离,数据平面隔离,隔离高速时钟和数据链路,多千兆位序列化/反序列化(SERDES)和板对板光纤更换(例如短距离光纤).本文介绍了ADN4624主要特性,功能框图,采用ADN4624的隔离视频接口(HDMI)电路图以及评估板EVAL-ADN4624EB1Z主要特性,电路图,材料清单和PCB设计图.

The ADN46241 is a quad-channel, signal isolated, low voltagedifferential signaling (LVDS) buffer that operates at up to 2.5 Gbpswith very low jitter. The device integrates Analog Devices, Inc.,iCoupler® technology, enhanced for high speed operation to providedrop-in galvanic isolation of LVDS signal chains. AC couplingand/or level shifting to the LVDS receivers and from the LVDSdrivers allows isolation of other high speed signals such as currentmode logic (CML).

The ADN4624 includes a refresh mechanism to monitor the inputand output states and ensure they remain the same in the absenceof data transitions (for example, at power-on).

For lower power consumption and high speed operation with lowjitter, the LVDS and isolator circuits rely on 1.8 V supplies. TheADN4624 is fully specified over a wide industrial temperature rangeand is available in a 28-lead, wide-body, finer pitch SOIC_W_FPpackage with 8.3 mm creepage and clearance (for 5.7 kV rms or 8kVPEAK surge and impulse voltages and reinforced insulation at acmai...