Good afternoon,
I'm opening this topic since I'm really confused about the compatibility of sensors which works at 1.8 or 3.3V with ATMEGA328 smd. Below is the question I have.
Do I need a step down converter and level shifter in order to use them, or will it not be necessary?
For example these 2 sensors can work properly without the 2 components mentioned above?
https://pt.mouser.com/datasheet/2/682/seri_s_a0002472725_1-2290988.pdf
Thank you for your assistance.
A lot depend on the sensor and the circuit you design. Posting a schematic not a frizzy thing will go a long way. Show your power source as well. Your link helped on part of the question.
Thank you for your answer. I'm still building my schematic, it was just because I've read in the datasheet that atmega works at 1.8-5.5V so I don't understand why should I use a buck converter and level shifter with sensors working at 1.8V. Why should it depend on the schematic settings? I'm sorry if the question may be stupid but I'm still learning.
What is your power supply, you do not specify exactly what parts you will be using. ATMEGA328 smd could be the chip or it could be a board. No offense but with your apparent understanding of electronics I am assuming you are going with a board. The sensor requires two voltages, how you get them does not really matter. A buck converter(s) are inexpensive and you do not have to fiddle with a lot of discrete parts. Your processor probably will want 5V but that is just a SWAG.
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