What is the best op-amp for EMG signals?

[abhiroop_k]

I am working on a project that involves using an op-amp (among other ic's) to collect EMG signals from arm muscles.

I couldn't get my hands on TL072. Will IC 741 be a decent substitute?

TL072 -> http://www.ti.com/product/tl072

IC 741 -> http://www.ti.com/lit/ds/symlink/lm741.pdf

Thanks in advance.

 

[analogdesign]

It's impossible to say without knowing something about your requirements. The TL072 will likely be much lower noise than the 741 and it has twice the bandwidth.

The safest thing to do is try to buy a TL072. They are in stock for about a buck a piece.

http://www.mouser.com/Search/ProductDetail.aspx?qs=E2%2FxqS9xjzrrJtzLbEfvqg%3D%3D

 

[berkeman]

I am working on a project that involves using an op-amp (among other ic's) to collect EMG signals from arm muscles.

I couldn't get my hands on TL072. Will IC 741 be a decent substitute?

TL072 -> http://www.ti.com/product/tl072

IC 741 -> http://www.ti.com/lit/ds/symlink/lm741.pdf

Thanks in advance.

You may need to use the FET-based opamp in order to keep your bias currents low enough to meet UL 544 Medical Device safety standards.

What power supply voltages are you using? The older opamps like these two don't have very good common-mode range characteristics at their inputs and output (they are not rail-to-rail opamps).