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助工
2016-10-24 17:03:35     打赏
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这里介绍两款PWM信号与4-20mA/0-10V模拟信号相互转换的混合集成电路,请参考。

 

详细技术资料:

1、模拟信号转PWM可编程隔离变送器IC

http://www.sun-yuan.com/news/html/201506/NewsDetail_97.html

 

2、PWM脉冲调宽信号转换4-20mA/0-10V模拟信号IC

http://www.sun-yuan.com/news/html/201309/NewsDetail_60.html

 

导读:业界领先技术小体积低成本模拟信号可编程控制隔离放大器IC,可将传感器、仪器仪表、变送器输出的模拟信号隔离放大、AD转换为PWM方波信号,并实现脉冲频率控制可编程输出。现场各种传感器、变送器、仪器仪表及控制设备嵌入安装该IC后能立即与CAN总线系统、PC机、PLC/DCS组成以太网/物联网、RS232/CAN总线网络并联网通讯,将现场传统控制设备升级为工控智能化设备,方便用户远程监控。

 

关键词:模拟量转PWM  4-20mA转PWM  0-5V转PWM  0-10V转PWM  模拟量转PWM  模拟量转数字    

       ISO U(A)-P-D-Q系列产品是顺源新开发的业界领先技术小体积(SIP12 Pin)低成本可编程控制型隔离变送器。可以将传感器、仪器仪表、变送器输出的模拟信号隔离放大、AD转换为PWM方波信号,并实现脉冲频率控制可编程输出。传感器、变送器、仪器仪表及控制设备嵌入安装该IC后能立即与PC机、PLC/DCS组成以太网/物联网、RS232总线网络并联网通讯,将现场传统控制设备升级为工控智能化设备,方便用户远程监控。 

      SunYuan  ISO U(A)-P-D-Q在同一模块内集成了多路高隔离DC/DC电源、模拟放大与变换电路、可编程MCU、信号隔离控制电路等,特别适用于工业现场模拟信号的AD隔离变送,现场总线、以太网物联网、PLC/DCS上位机对多路传感器信号采集和分析。内部集成的高效率DC-DC隔离电源,分别给内部的输入调理电路、微型单片机AD转换电路和输出信号隔离电路供电。 SMD工艺结构及新技术隔离措施使该器件能达到:辅助电源与模拟信号输入、PWM信号输出的2500VAC三隔离,输入信号与通讯串口共地。并且能满足工业级宽温度、潮湿、震动的现场恶劣工作环境要求。  

      SunYuan  ISO U(A)-P-D-Q系列产品使用非常方便,无需外接任何元件即可实现模拟信号与PWM信号的隔离变送功能。12脚单列直插的超小体积(33.0X15.5X10.5mm)及标准PCB板上安装设计,有效简化用户系统设计方案选择,降低体积和布线成本。产品有PCB板上安装的IC封装、DIN35标准导轨安装和PIM面板显示嵌入式安装方式。  DIN导轨式安装方式可实现信号一进一出隔离传输功能。 PIM 面板嵌入式智能化变送表可实现传感器模拟信号隔离显示、报警控制及远距离无失真传输等多种功能。 广泛应用在冶金采矿、石油化工、电力设备、医疗仪器、工业自动化、新能源设施及军工科研等领域,用户可根据现场需要选择合适产品。

 

原理框图 



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菜鸟
2018-07-01 22:10:26     打赏
12楼

123



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