3 ms·
tl;dr it uses Texas Instruments ADS1299 (24-bit, 8-channel) analog-digital converter There is no way to do what that chip does for less, maybe 7$ less but the
by genxy 5mo ago
tl;dr it uses
Texas Instruments ADS1299 (24-bit, 8-channel) analog-digital converter
There is no way to do what that chip does for less, maybe 7$ less but then not as good. They have priced it perfectly and I hate them for it.
https://www.digikey.com/en/products/detail/texas-instruments/ADS1299IPAGR/3536907 https://www.digikey.com/en/products/detail/texas-instruments...
- CamperBob2 5mo agoPart of what you're paying for with the ADS1299 is simultaneous sampling, which you can get by without. You could use a single-channel 24-bit ADC and multiplex it yourself with generic analog switch ICs. That gives you a much larger array of part-selection options. Or try the newer ADS122S14.
- genxy 5mo agoThe ADS1299 also has a bunch of built in analog front end circuit specifically for biosensing. Though it looks like the could be used for a super cheap EEG, neat chip and in some ways, better than the ADS1299.
- genxy 5mo agoI am investigating the MCP3914B.
- genxy 5mo agoNot suitable, noise is way too high.
- throwaway81523 5mo agohttps://www.adafruit.com/search?q=24-bit%20adc https://www.adafruit.com/search?q=24-bit%20adc
- deleted 5mo ago[deleted]