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Contact heart rate measurement

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ali_asadzadeh:
Hi,
I want to know how can I measure heart rate using metal contacts, something like in treadmills. any Ideas? or chip we have for them? I want to use it for a fitness app.
Thanks

NiHaoMike:
That's called ECG/EKG, basically you need an amplifier with a low noise floor and good common mode rejection.

SiliconWizard:
You can take a look at the AD8232 to begin with: https://www.analog.com/en/products/ad8232.html
(and the related docs)

ali_asadzadeh:
Thanks, for the info, if we have a good app note to understand the concept or a cheap way of doing it from Chinese ppl, it would be very nice ^-^

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