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您好,您是使用的PGA309EVM-USB的这个EVM板是吗?可以参考EVM user's guide,其中T4是外部桥传感器输入端,T5可以接外部温度传感器输入:
输出端的话分为电压输出和电流输出,user‘s guide中也有给出介绍:
设置增益的话可使用PGA309EVM-USB Software ,可以参考User’s guide Figure 28:
https://www.ti.com.cn/cn/lit/ug/sbou084b/sbou084b.pdf