Thursday, 9 October 2014

operational amplifier - How do I see if an op-amp is rail to rail using only datasheet?


If I have a data sheet or part of it, how can I see if an op-amp is rail-to-rail using only the numbers?


For example, only using the image below, how can I see if input and/or output is rail-to-rail?


Enter image description here



Answer



At the top of the chart it says "Vcc +- 15V."



Then it gives the maximum output values Vom as +- 13.5V. So, it does not have rail to rail output.


Then look at Vicr. That's common mode input voltage range. Typical is +-11V when operated on +-15V. So, input is not rail to rail.


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