Dear seniors, please help me choose a chip

d3d4

Dear seniors, please help me choose a chip [Copy link]

Can the resistor voltage divider control switch circuit be implemented with one chip?

maychang

Using a single chip microcomputer with AD on chip can achieve your requirements.

However, key recognition can also be achieved using a microcontroller without AD, and it is more convenient than this circuit.

qwqwqw2088

I don’t understand the original poster’s specific requirements. Is the button manually controlled or signal controlled?

I wonder if the analog switch 4066 can be used.

d3d4

qwqwqw2088 posted on 2019-6-23 09:55 I don't understand the specific requirements of the OP. Is the button controlled manually or by signal? I wonder if the analog switch 4066 can be used

Thank you for your reply. The button is manually controlled. When you release the button, it will automatically reset and the corresponding output high level signal

leifengfirst

Is a digital potentiometer ok?