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sparkfun / AD8232_Heart_Rate_Monitor

AD8232 Heart Rate Monitor
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this is not a good chip for measuring biosignals #22

Open phpkadir opened 4 years ago

phpkadir commented 4 years ago

this chip dont have digital data handlers. its datasheet has not any analog to digital converters. this chip is an opamp only. you should choose ti-ads1262 to measure a biosignal. its giving digital measurement data to microcontrollers. ti ads1262 has all diferential inputs. who use this mistaken chip is a misguide guru.

vredzhepov commented 4 years ago

The AD8232 is an integrated signal conditioning block for ECG and other biopotential measurement applications. It is designed to extract, amplify, and filter small biopotential signals in the presence of noisy conditions, such as those created by motion or remote electrode placement. This design allows for an ultralow power analog-to-digital converter (ADC) or an embedded microcontroller to acquire the output signal easily.

playaspec commented 3 years ago

The ads1262 has a completley different use case, comes in a significantly bigger package, and costs over $21 in single quantities. It's overkill in every conceivable way.

The AD8232 is designed specifically for this application, eliminating a ton of finicky and difficult to design analog front end circuitry, is roughly 1/3 the size of the ADC, and costs less than $4 in single quantity. For under $5 you can get one mounted on a board with all the necessary components from AliExpress. Even when you support Sparkfun and buy at their price it's cheaper, and more importantly, does not require reinventing the wheel for no perceivable benefit.

This chip is FAR more than just an op-amp.