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关于REF3233在空载时电压输出偏差太大问题与上电时序关系

Other Parts Discussed in Thread: REF3233, REF3433

Dear TI:

            我们在使用REF3233芯片3.3V基准电压给ADC供电时(空载状态)输出电压偏差太大,有时电压为3.294V,有时电压为3.28V,也有出现只有3.26V,,输入电压为3.8V。EN使能脚接的MCU的GPIO口(电平为3.3V),REF3233是否有上电时序要求?上电时序是否与Vin输入电压比对?