5V to 5V precision voltage reference

[prescott2006]

Is there any IC that can output a precision 5V from a 5V supply?

 

[madmike159]

What type of chip are you looking for?
Logic, Op-Amp...

 

[Averagesupernova]

Not likely all in one chip. You could do a low current boost convertor or charge pump from your 5 volt supply and then feed that into a 5 volt reference chip.

 

[mdjensen22]

Do a Digikey search for dc to dc converters. (www.digikey.com)
I'm not sure what specs are critical for you, but that is a pretty solid place to start.

Linear tech and analog devices make product that can handle this function. Some parts require external circuitry, others are a fully integrated 'black box'.

 

[madmike159]

Most logic chips output very close to their supply voltage. You can get rail-to-rail Op-amps that can get close too.

 

[sophiecentaur]

Is it likely that the op is referring to logic circuits? Do they need a 'precision' reference?

The problem here is that you need to 'drop some volts' if you want to 'regulate'. So you have to provide some excess volts - which can be done with, as mdjensen22 says, with a dc-dc converter.
But I ask myself, if you only have 5V to play with, why do you want a 5V precision reference? What circuit could 'use it' to compare with what?

 

[YesIam]

Here is what I think about the question: First 'PRECISION' doesn't mean too much without indicating to 'what amount' of precision you want...to the nearest volt, to the nearest microvolt, to the nearest nanovolt. Normally, the person that said one should start out with something greater than 5 volts to get the regulated 5 volt is basically correct...but, I think that it is not really necessary with additional circuitry...simply a dc to dc coverter to increase this original 5 volts to any dc approprate voltage and you can then regulate a 5 volts to whatever resonable precision you may wish. But you asked if there was 'a' chip that could do this for you. If you are talking about 'a' chip to give you a 5 volts with a precision of + or - 1 volt, you can proboble find one that will do this for you, but I don't think that you are eally asking for this minimum amount of precision. So...my thought on this is you can not design a circuit with one chip that will give you much of a precision as I think you are talking about. I realize that new chips are being designed everyday to do new things. I could give you all kinds of ways to get some type of 'precision' but you didn't ask for this-you asked for a type of 'a' chip...and my ideas would involve more than one chip. So...I don't think you can get there from here...again it all depends on what amount of precision you may be asking about.