Replacing LM324N with Better Opamp

[m718]

Can PNP input opamps be replaced with NPN input ones?
I want to replace the LM324N with something better.

 

[berkeman]

Can PNP input opamps be replaced with NPN input ones?
I want to replace the LM324N with something better.

A FET rail-to-rail opamp would be able to replace the 324. The PNP topology was just used for some applications before good FET opamps were viable.

 

[oswaler]

Some people have suggested using NPN input opamps instead of PNP input ones.

I would recommend thoroughly researching and comparing the specifications and performance of the LM324N and potential replacement opamps before making a decision. While NPN input opamps may offer certain advantages, such as lower input bias current and lower input offset voltage, they may also have limitations in terms of input voltage range and common-mode rejection ratio. It is important to understand the specific requirements and operating conditions of your circuit before making any changes. Additionally, proper circuit design and layout considerations should be taken into account when using different types of opamps. I would also recommend consulting with other experts or conducting experiments to determine the best replacement for your specific application. Ultimately, the decision should be based on thorough research and analysis rather than simply switching to a different type of opamp without fully understanding the potential consequences.