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采用 AnalogPAK 的电流环路通信

概览

描述

该系统使用 AnalogPAK™ 配置一个 4 至 20mA 的电流环路,用于主设备和从设备之间的通信。 AnalogPAK™ 能够作为高速可寻址远程传感器(HART®)调制解调器支持对通信数据进行调制和解调,还可支持 1200Hz 和 2200Hz 的 FSK 调制。

系统优势:

  • AnalogPAK™ 可提供更小的尺寸和更低的成本。
  • SLG47011 将 HART 调制解调器集成到单个芯片中,可根据用户需求灵活选择 MCU。
  • SLG47003 中的零漂移、超低偏移运算放大器可确保稳定和、高精确度的信号传输。

产品对比

应用

  • 工业设备的压力测量
  • 工业应用
  • 工厂自动化

方框图

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WSxxx_HART Connector Line Connector Line.230 Connector Line.232 Connector Arrow.179 Sheet.100 HART HART Sheet.101 Current Loop Circuit Current Loop Circuit Dynamic connector.490 Dynamic connector.493 Sheet.119 4-20mA Loop 4-20mA Loop Notes 1 Choose any MCU according to user specifications. 2 HART mod... 1 Choose any MCU according to user specifications.2 HART modem: PGA, ACMP, Digital filter, DAC, Modulator/Demodulator, etc.3 FSK modulation (1200Hz, 2200Hz). Sensor Sensor Sensor Connector Arrow AnalogPAK AnalogPAK2 AnalogPAK2 Line Bi-directional Line Bi-directional.160 Connector Arrow.162 Connector Arrow.163 HART_OUT HART_OUT3 HART_OUT3 HART_IN HART_IN HART_IN 3.3V 3.3V 3.3V Connector Arrow.168 Connected signals arrow Connected signals arrow.170 AnalogPAK Op Amp AnalogPAK Op Amp x2 (Filter) AnalogPAKOp Amp x2(Filter) AnalogPAK AnalogPAK2 AnalogPAK2 Line Bi-directional.177 Line Bi-directional.178 Connector Arrow.180 HART_OUT HART_OUT3 HART_OUT3 HART_IN HART_IN HART_IN 3.3V 3.3V 3.3V Connector Arrow.184 Connected signals arrow.185 Connected signals arrow.186 AnalogPAK Op Amp AnalogPAK Op Amp x2 (Buffer/Filter) AnalogPAKOp Amp x2(Buffer/Filter) Resistor - Fixed Op Amp Op Amp Op Amp Connected signals arrow.193 Connector Arrow.195 Connected signals line Connector Arrow.198 Battery 2-Cell.203 Sheet.204 Sheet.205 Sheet.206 Sheet.207 Line 1pt.1552 Line 1pt.1608 Connector 1.160 Loop Power 24V Loop Power 24V Loop Power 24V Connector 1.221 Connector Line.225 Connector Line.226 Dotted Line Dotted Line.228 Connector Line.229 Connector 2 Connector 2.233 Connector 2.234 Connector 2.235 Field Field Field Host Host Host WS030 WS030 WS030 Sheet.245 MCU MCU1 MCU1 UART UART UART GPIO GPIO GPIO Sheet.246 MCU MCU1 MCU1 UART UART UART ADC ADC ADC GPIO GPIO GPIO
Exiting Interactive Block Diagram