ADS1299 can operate at 3.3V

Linh Nguyen

Other Parts Discussed in Thread: ADS1299

Hi,

I am designing the custom PCB using ADS1299. Because the MCU uses 3.3 V voltage so for convenience I want to apply 3.3v to ADS1299's AVDD and DVDD.

Could you give me any opinion about this change and what I have to do to get the correct EEG data ?

Thanks in advance.

over 10 years ago

0 Brian Pisani over 10 years ago

TI__Mastermind 38745 points

Hey Linh,

According to the datasheet for the ADS1299 on page 5, the analog power supply voltage (AVDD-AVSS) must be at least 4.75 V so the device will definitely not work if the analog electronics were powered only from a 3.3 V supply. That being said, TI has a large variety of power management products that will likely suit your needs (www.ti.com/.../power_portal.page).

Regards,
Brian Pisani

Data converters

Data converters forum

ADS1299 can operate at 3.3V