ADS1251: Power supply problem for ADS1251

wang jingang

Part Number: ADS1251
Other Parts Discussed in Thread: ADS1254

Hello!
ADS1251 was used for data collection
Now the MCU power supply USES 3.3v. In order to avoid the problem of level matching, I want to use 3.3v power supply for ADS1251. Is that ok?
thank you！

over 5 years ago

0 Christopher Hall over 5 years ago

TI__Mastermind 44550 points

Hi Wang Jingang,

The ADS1251 only operates off of a single 5V supply and the digital interface is also 5V logic. You'd need to use a level-shifter to interface with a 3.3V MCU.

You might consider the ADS1254 instead... It allows for a second digital supply source and can interface with 3.3V logic. It also has a built-in multiplexer and allows for four differential inputs.

Best regards,
Chris

0 ana cao over 5 years ago in reply to Christopher Hall

Prodigy 10 points

I understand. Thank you.

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ADS1251: Power supply problem for ADS1251