要给一个阻性(几十欧)元件施加一个20~80mA的电流,测量电压,计算出准确的阻值,由于功耗限制,电流只允许持续1us,本打算使用DAC+运放+晶体管实现电流源,但找了一圈,发现DAC的建立时间通常都在1us以上,再算上运放的建立时间,肯定>1us,请教该如何实现?
This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
您好,
您可以看下以下电流源是否满足您的要求:
0-2V to 0-100mA:
https://www.ti.com/tool/TIPD102?keyMatch=Voltage-to-Current&tisearch=Search-EN
0 to 5 V Input, 0 mA to 500 mA:
https://www.ti.com/tool/TIPD101?keyMatch=Voltage-to-Current&tisearch=Search-EN