Question: Why is the particular op-amp, MCP6004, used in the sample circuit for FlexiForce™ sensors as opposed to other commonly available ones such as LM741?

Answer: This op-amp is rail-to-rail for both input and output. Other op-amps, such as the LM741, can be used instead and will still provide a linear output, but we recommend a rail-to-rail op-amp because of the larger dynamic range.

See also:

What is the benefit of using an inverting op-amp circuit as opposed to other types?

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