Hi,
On page 21 of ths4031 datasheet, the Equation 1 for input noise Ein calculation should be "Ein = sqrt((xxx)^2 + (xxx)^2 + (xxxx))", rather than "Ein = sqrt((xxx)^2 = (xxx)^2 = (xxxx))", I think.
Could you please confirm if it is correct and also review any other issues in the section 9.3.1? Thank you.
Yifei
Hello Yifei,
Thank you for your interest in our amplifiers and for bringing this to our attention. You are correct, those should be plus signs instead of equal signs. I have verified that there are no other errors.The correct equation is the following:
For more information regarding noise, I recommend checking out the application report Noise Analysis for High-Speed Op Amps where the above equation appears as equation 5. The TIPL video series on noise (section 8) is also a great resource that discusses modeling the noise with hand calculations and simulations.
