1) Let's say I'm doing a differential Amp, and besides doing the differential, I also want to have a gain, the question is: Are all the non-ideal characteristic of op-amp will be amplified as well? (I mean the voltage errors that is caused by Vos, I_biased, I_offset, etc...)
2) I saw one spec said that "output swing to low: 1mV 10mV max", does that mean I can not really get it down to a 0mV output? If so, is this an offset throughout the whole range or is this just a minimum value that I need to exceed to get some real reading? If this is the case, is a dual powered http://www.electronics-lab.com/forum/index.php?topic=33915.0#op-amp help in this area?
3) Is there a reason to use multiple op amps instead of only using one? (I saw some circuit people uses multiple op-amps, let's say one for differences, one for gain, and such, when all can be put in the same op-amp.)
These are some questions that is in my mind for awhile, if you can help me answer any of them, it will be much appreciated.
2) I saw one spec said that "output swing to low: 1mV 10mV max", does that mean I can not really get it down to a 0mV output? If so, is this an offset throughout the whole range or is this just a minimum value that I need to exceed to get some real reading? If this is the case, is a dual powered http://www.electronics-lab.com/forum/index.php?topic=33915.0#op-amp help in this area?
3) Is there a reason to use multiple op amps instead of only using one? (I saw some circuit people uses multiple op-amps, let's say one for differences, one for gain, and such, when all can be put in the same op-amp.)
These are some questions that is in my mind for awhile, if you can help me answer any of them, it will be much appreciated.