The LM324 series are low−cost quad operational amplifiers with true differential inputs. They have several distinct advantages over.
lm d
https://www.ti.com/lit/gpn/lm324-n
LM124/LM224/LM324/LM2902. Low Power Quad Operational Amplifiers. General Description. The LM124 series consists of four independent high gain
LM M NOPB Texas Instruments datasheet
LM2902
https://www.st.com/resource/en/datasheet/lm224a.pdf
LM124/LM224/LM324/LM2902. Low Power Quad Operational Amplifiers. General Description. The LM124 series consists of four independent high gain
LM324 datasheet
Application Design Guidelines for LM324/LM358 Devices The LM324 and LM358 family of op amps are popular and long-lived general purpose amplifiers due to ...
LM2902 Quadruple Operational Amplifiers
http://www.zpag.net/Electroniques/Datasheet/LM324.pdf