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https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/663592/xtr111-in-my-new-project-i-need-to-generate-a-current-loop-from-main-control-board-i-am-using-xtr111-for-this-purpose-can-anybody-verify-the-circuit-for-4-20ma-current-loop-we-have-issues-on-error-flag-error-flag-is-always-se
您好，Kaye：
我附上了电流回路的所有示意图，我们必须使用两个不同的GND单列，请参阅示意图
我们必须验证负载接地是否连接到输入接地，并参考与XTR电源接地相同的接地。
输入条件：
输入信号为3.3V和5V。
输出：
我们必须连接220欧姆的外部负载电阻，但 负载之间没有响应。
