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Forum 隔离式半双工差分线路收发器ISO1176T(TI)
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  • iso1176t
  • 差分线路收发器
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隔离式半双工差分线路收发器ISO1176T(TI)

铁丝19
铁丝19 over 14 years ago

来源:21ic

 

 

 

日前,德州仪器 (TI) 宣布推出一款带集成变压器驱动器的隔离式半双工差分线路收发器 ISO1176T。该解决方案不仅可为隔离变压器提供初级电压,而且还可配合外部变压器、整流器和稳压器实现具有最高效率及最低电磁干扰 (EMI) 的业界最小型隔离式信号与电源系统设计。

63.jpg

ISO1176TDWISO1176TDW 可广泛应用于 Profibus 系统、工厂和楼宇自动化、网络传感器、电机/运动控制、制热通风与空调系统 (HVAC) 以及网络安全站等领域。该器件可与 TI TPS76350 等稳压器实现兼容。TPS76350 是一款采用小型封装的低压降 (LDO) 稳压器,能够实现低功耗工作。与传统的 LDO 稳压器相比,这类稳压器具有低压降电压和静态电流等优异特性,理想适用于对板级空间具有较高要求的低成本设计与应用。

ISO1176TDWISO1176TDW 的主要特性和优势:
• 生命周期更长,可靠性更高:TI 电容隔离技术采用 SiO2 作为电介质隔离,可靠性和生命周期是磁性或光学隔离技术的两倍还多。可在线路收发器和逻辑电平接口之间实现 2500Vrms 的隔离,从而既可降低数据损坏风险,而且还能避免超长传输线路上昂贵的控制电路出现损坏;
• 缩小板级空间,降低成本:在收发器中集成变压器驱动器可减少组件数,而且与业界竞争型解决方案相比可节省 20% 的板级空间;
• 更高速度:工作速率高达 40Mbps,即比实力最接近的竞争解决方案快两倍多,实现了更高的数据传输速度;
• 更多节点:支持 160 个节点,即可减少所需中继器数量,而且还能降低系统成本。

 

ISO1176TDWISO1176TDW 采用16 引脚SOIC 封装,目前已开始供货。其它两款带变压器驱动器的隔离式全双工 RS-485 收发器于预计将于 2011 年第一季度末开始供货,其工作电压分别为5V 和3.3V。

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