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Step 2Planning
Planning is an important part of any project one builds. As for what I did was:
1. I found all the technical data for the semi-conductors and figured out what I could use for this design. I found three chips from Texas instruments that would fit the application nicely. These are the OPA137, INA217 and the TLE 2426.
2. Using the data sheet for each figure out how they will work together and make a schematic for the project. In my case the schematic was already made from TI, so all I needed to do was fit the third chip in.
3. Take the schematic and convert it to something that allows you to build.
4. Obtain the materials that you will need for this project.
5. Start building, double check everything as you build the project. This allows you to fix errors as they happen rather then unsolding connections after.
So there are still a number of thing that i’m not sure what I should so with.
The first is that I used two electrolytic caps for the input, what other types of polar caps can be used?
Secondly, for off board wiring, I connected pin 2 and 3 to positive and negative inputs, however for the output, I only have one out. Does this mean I no longer have a balanced signal and pin 3 and pin 1 are both connected to the ground?
1. I found all the technical data for the semi-conductors and figured out what I could use for this design. I found three chips from Texas instruments that would fit the application nicely. These are the OPA137, INA217 and the TLE 2426.
2. Using the data sheet for each figure out how they will work together and make a schematic for the project. In my case the schematic was already made from TI, so all I needed to do was fit the third chip in.
3. Take the schematic and convert it to something that allows you to build.
4. Obtain the materials that you will need for this project.
5. Start building, double check everything as you build the project. This allows you to fix errors as they happen rather then unsolding connections after.
So there are still a number of thing that i’m not sure what I should so with.
The first is that I used two electrolytic caps for the input, what other types of polar caps can be used?
Secondly, for off board wiring, I connected pin 2 and 3 to positive and negative inputs, however for the output, I only have one out. Does this mean I no longer have a balanced signal and pin 3 and pin 1 are both connected to the ground?
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This shows the two chips ina 217 and the OPA137.
The last chip TLE2426 is the ground splitter