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IC compatibility

Hi everyone!

We are building a pulse oximeter for our final year project. We found this application note in Analog devices website

But the ICs mentioned have their supply voltage range from 5V to 16V. Other ICs in our circuit have their operating voltages in the range 3V-less than 5V. We are using a blackfin processor too.

Can you please suggest op amps similar to AD8663/AD8667/AD8669 with operating voltage in the range we require?

Thanks in advance.