PWM + XTR115 实现输出0-20ma电流电路 有设计好的电路吗,急用,谢谢。
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这外电路可以,将用低通滤波器将PWM滤波成直流电压,再结合XRT115的典型电路设计。
另外TI有4-20mA输出的DAC,见下面的链接。
http://www.ti.com/lsds/ti/data-converters/Precision-DAC-4-to-20mA-current-output-products.page