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LMP91000的问题

TI专家们好:

             最近在用LMP91000做电化学传感器的产品,接 三电极无偏置和有偏置的电化学传感器还可以

             但是接2电极的氧气电化学传感器,用恒电势电路,把 RE 和 CE脚短接,这个也是LMP91000推荐的,现象是开机 到稳定需要很长很长时间,而且LMP91000里面TIA放大器 负端没有被 拉到 正的零点参考电压处