Need rail to rail opamp

[jeet55]

For a project that iam currently working it needs rail to rail opamp . So i have no idea regarding part number. So can some one please suggest me commonly available rail to rail opamp.
Required: input voltge +5v single supply
Output should to 5 volts or near to it like 4.8
Output current :need to drive mosfets and pins of microcontroller (adc) so not much current needed.

[Kleinstein]

There are lot's of RR OPs for a 5 V supply. A MCP6001/2/4 would be a rather cheap one.
Most AZ OPs for 5 V are also rail to rail if precision is needed.

Usually one would use something like the parametric search at the supplier of choice.

[Benta]

For applications not needing a lot of bandwidth, LMC6482 is my favourite, which I've used in lots of projects. It's a dual, though.

[bson]

You don't say what kind of bandwidth or slew rate you need.  RRIO op amps tend to compromise in these areas for ease of use.  The TLV172 for example drops to 0.3MHz GBWP within 2V of its positive rail, with equally poor slew rates, but otherwise is RRIO with no latching or phase inversion effects.  If you're sampling very low bandwidth signals, such as a temperature sensor or a fuel gauge, then this is no problem.  So it really depends on what your application is.

[Zero999]

Is that rail-to-rail output or do you need it on the input too? If so, does it need to go to both rails or is just the positive fine?

If all you need is an op-amp which can output voltages, all the way up to +V, then a standard op-amp, with a current source, connected the output will do.

What's load impedance?



By the way, don't bother simulating the attached circuit. The op-amp models don't accurately depict what will happen if the output is pulled-up. See the following thread for more information, if you really want to simulate it.
https://www.eevblog.com/forum/projects/better-ltspice-tl072-model/msg999066/#msg999066