opo7c 运算放大器电路问题

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2018-06-01 08:46:27

按照差分运算放大接的电路，放大比例一比一，但是实际输入1引脚和2引脚均接地时输出端有一个6V电压，不知道为什么？有接触过这种电路的帮忙看下

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zhangruxpy 2020-05-16

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发错了这个图

zhangruxpy 2020-05-16

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这个你会吗
原理

tianxj001 2018-06-01

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对了，你这里运放只是5V供电，那有能力输出6V电压，这种情况，根本就是外面错误的倒送过来的。

CodeAllen嵌入式 2018-06-01

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好的，我检查下

tianxj001 2018-06-01

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你说的1和2都接地，和图哪都对不上，应该是INPUT和OUTPUT2个脚，全部接地的话，如果芯片、线路正确，是不可能输出6V的，没法分析什么，肯定是实际线路有问题，或者某个器件有问题。就这种线路，不需要OP07，哪怕用324，这样接法，如果器件正确，同相反相没有搞错。输出不会超过2mV。因为324的失调电压也就<2mV.，一倍差分放大器，输出失调等于输入失调。如果器件都是对的，怀疑实物线路和原理不符。原理图引脚顺序都没问题，如果实物顺序错误，就不知道会发生什么情况了，比如2和3脚顺序错误。

op07芯片是一种低噪声、非斩波稳零的双极性运算放大器集成电路。它以其优异的性能，在电子行业中得到了广泛的应用。op07的主要特点是低输入失调电压、低输入偏置电流以及高开环增益。 #### 二、技术特性 ##### 1. ...

OP07是一种低噪声的双极性运算放大器集成电路。它是一种非斩波稳零的设备，这意味着它能够在不需要斩波稳定器的情况下提供稳定的零点。双极性运算放大器通常使用双极型晶体管，具有较高的输入阻抗和较高的输出驱动...

【电路设计实例】 op07c 运算放大电路设计— 检测电流之前电路设计时涉及到检测电流电路需求:检测输入端电源差值，一比一比例输出，然后给单片机检测基本电路：这个电路问题是输入端电压改变时没法实时响应反馈...

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opo7c 运算放大器 电路问题

opo7c 运算放大器电路问题