Hello,
I'm working on a circuit that needs a buffer. I was going to use the OPA344 as is rail to rail.
The input voltage range at pin 3 is from 0.18V to 3.1V and the output goes to an analog input of a microchip.
Within that wide range there are other smaller ranges that the software uses to make decisions, for example from 0.18 to .28 blue .38 to .58 red .78 to .98 green etc.
One thing I noticed is that the OPA344 datasheet mentions there is a transition region where a small discontinuity may occur. From the datasheet it looks like problems can occur between 1.5 to 2.5V input voltages as the opamp switches rails. So I don't think this will be a good part for this application. I need something that's stable through the entire range of 0.180V to 3.1V.
Any ideas?
I'm working on a circuit that needs a buffer. I was going to use the OPA344 as is rail to rail.
The input voltage range at pin 3 is from 0.18V to 3.1V and the output goes to an analog input of a microchip.
Within that wide range there are other smaller ranges that the software uses to make decisions, for example from 0.18 to .28 blue .38 to .58 red .78 to .98 green etc.
One thing I noticed is that the OPA344 datasheet mentions there is a transition region where a small discontinuity may occur. From the datasheet it looks like problems can occur between 1.5 to 2.5V input voltages as the opamp switches rails. So I don't think this will be a good part for this application. I need something that's stable through the entire range of 0.180V to 3.1V.
Any ideas?