Question about INSAMP

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YuCh_3947976
Level 3
Level 3
10 replies posted 5 replies posted 10 questions asked

Hi everyone,I'm a beginner of PSoC.I have a question about TWO OP-AMP,

I saw a schematic in a book,which has one more resistor than the original circuit in datasheet,and that resistor is connected in parallel with two Ra.

I want to know how I can realize that circuit,should I have an external resistor in the breadboard,or I just need to adjust the property(gain) of INSAMP?

circuit in datasheet

pastedImage_4.png

my circuit

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1 Solution

another question is that I want to realize this circuit(Sallen-Key low-pass filter),but there haven't any filter with one OPA in Filters folder

pastedImage_0.png

I've found a method in your web.it uses resistors and capacitors with a OPA to realize this circuit.

Do I complete it with this method only?

pastedImage_1.png

View solution in original post

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4 Replies
SampathS_11
Moderator
Moderator
Moderator
250 sign-ins 250 solutions authored 5 questions asked

Hello Yu,

You will need to set the gain property of the INSAMP only.

Best regards,

Sampath

Thanks a lot.I'll try it.

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another question is that I want to realize this circuit(Sallen-Key low-pass filter),but there haven't any filter with one OPA in Filters folder

pastedImage_0.png

I've found a method in your web.it uses resistors and capacitors with a OPA to realize this circuit.

Do I complete it with this method only?

pastedImage_1.png

0 Likes

Hello Yu,

You can use this method to realize a single OP Amp Sallen Key filter.

Best regards,

Sampath