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Hi
I am trying to use the OpAmp in PSoC6 as a pre-amp for the ADC.
I would need to connect the resistor network. I am not sure how to connect R2 between the -ve input and the OpAmp output, then connect the OpAmp output to the ADC input.
Also, Should I use the analogue inputs on the PSoC for the OpAmp ? pins 10 are yellow in colour, while pin 9 is green !
Solved! Go to Solution.
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Passive parts are connected to external pins. Configure analog I/O to show external pin.
Configure opamp output drive as "output to pin."
Opamp outputs must be on green pins, this is the direct route with lower output resistance.
Inputs are move flexible, but green pins use less internal routing and have lower parasitics.
I built the project:
It built nicely. Pins are:
You have to lock them to have them show on schematic.
---- Dennis Seguine
PSoC Apps Engineer
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SaGa,
I provided a new TopDesign that builds without error. Just substitute this file in place of the one found in your TopDesign folder.
Sadly, the "green" wire indicates an improper connection inside the PSoC6.
Since the PSoC6 has no internal PGAs, you have to make ALL your resistor connections externally. This means to have to allocate another analog pin from the GPIO to make the output (feedback connection) a shown below.
"Engineering is an Art. The Art of Compromise."
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Passive parts are connected to external pins. Configure analog I/O to show external pin.
Configure opamp output drive as "output to pin."
Opamp outputs must be on green pins, this is the direct route with lower output resistance.
Inputs are move flexible, but green pins use less internal routing and have lower parasitics.
I built the project:
It built nicely. Pins are:
You have to lock them to have them show on schematic.
---- Dennis Seguine
PSoC Apps Engineer