Uploaded May 2024 | Updated September 2026, 2 weeks ago
In this video, I give you my five top tips for designing circuits with operational amplifiers.
These Operational amplifiers or op-amps are ideal chips for many analogue circuits from audio amplifiers to measurement inputs, filters, integrators, oscillators and many more essential analogue building blocks.
They have very many advantages and they are very easy to use, but to get the best out of them you need to follow a few simple rules.
These guidelines are all very simple:
Choose the best op amp. As there are so many different types, spending a little time to select the best operational amplifier type for the job in hand can pay dividends.
Use the feedback network to give you the response or function you want: amplifiers inverting and non-inverting, low pass, high pass and bandpass filters, oscillators, integrators and so many more. These can all be created by using different forms of feedback.
Don't try to get too much voltage gain out of each stage. Possibly ten to twenty is a maximum, but always look at the gain bandwidth product. See the video link for this later.
Also use sensible values, don't make values too high, say over 100kOhm or less than 100 Ohm unless you really need to. But wherever they are just try to keep them not too low and not too high. This avoids loading effects that might occur, because the input impedance is high but not infinite and with low resistor values other effects may occur - the source impedance of the previous stage and the like.
Finally for amplifier circuits using operational amplifiers or op-amps, choose the right format: inverting or non-inverting. The non-inverting amplifier has a high input impedance and the gain is calculated from the formula 1 plus R2 over R1. The inverting amplifier has a low input impedance - that of the input resistor and the gain is equal to R2 divided R1. Also this configuration can be used as a summing amplifier. So think what you want before you design
To find out more about operational amplifier circuits check the following link: electronics-notes.com/articles/analogue_circuits/operational-amplifier-op-amp/circuits.php
Op-amp gain bandwidth product video: youtu.be/-hkckP9odts
Visit my online shop: electronics-notes-shop.fourthwall.com
Visit my homepage: electronics-notes.com
Please don’t forget to subscribe to my channel: youtube.com/electronicsnotes?sub_confirmation=1
In this video, I give you my five top tips for designing circuits with operational amplifiers.
These Operational amplifiers or op-amps are ideal chips for many analogue circuits from audio amplifiers to measurement inputs, filters, integrators, oscillators and many more essential analogue building blocks.
They have very many advantages and they are very easy to use, but to get the best out of them you need to follow a few simple rules.
These guidelines are all very simple:
Choose the best op amp. As there are so many different types, spending a little time to select the best operational amplifier type for the job in hand can pay dividends.
Use the feedback network to give you the response or function you want: amplifiers inverting and non-inverting, low pass, high pass and bandpass filters, oscillators, integrators and so many more. These can all be created by using different forms of feedback.
Don't try to get too much voltage gain out of each stage. Possibly ten to twenty is a maximum, but always look at the gain bandwidth product. See the video link for this later.
Also use sensible values, don't make values too high, say over 100kOhm or less than 100 Ohm unless you really need to. But wherever they are just try to keep them not too low and not too high. This avoids loading effects that might occur, because the input impedance is high but not infinite and with low resistor values other effects may occur - the source impedance of the previous stage and the like.
Finally for amplifier circuits using operational amplifiers or op-amps, choose the right format: inverting or non-inverting. The non-inverting amplifier has a high input impedance and the gain is calculated from the formula 1 plus R2 over R1. The inverting amplifier has a low input impedance - that of the input resistor and the gain is equal to R2 divided R1. Also this configuration can be used as a summing amplifier. So think what you want before you design
To find out more about operational amplifier circuits check the following link: electronics-notes.com/articles/analogue_circuits/operational-amplifier-op-amp/circuits.php
Op-amp gain bandwidth product video: youtu.be/-hkckP9odts
Visit my online shop: electronics-notes-shop.fourthwall.com
Visit my homepage: electronics-notes.com
Please don’t forget to subscribe to my channel: youtube.com/electronicsnotes?sub_confirmation=1
