168Views9Replies

Author Options:

analogue-digital cmos chips? Answered

Is there a chip like the LM3914 that takes an analogue voltage input and turns it into a digital signal? (preferably BCD, but decimal is fine too), but without the inverting output, so I can use it with other CMOS chips? I basically just want a chip that takes an analogue signal, and based on a threshold, divides it up into a decimal (or binary) signal. Specifically, I want to use it with a thermistor and a 7-segment display to make a digital thermometer.

9 Replies

user
steveastroukBest Answer (author)2011-05-07

What you are looking for is an Analogue to digital converter. Yes, they exist as separate components.

For what you want though, you might consider on the of the classical "digital panel meter" ICs, like the 7106.

Steve

Select as Best AnswerUndo Best Answer

user
iceng (author)steveastrouk2011-05-07
user
steveastrouk (author)iceng2011-05-07

God, I remember putting SO many of those together in my youth !

Steve

Select as Best AnswerUndo Best Answer

user

OOh, new neat bug, I typed another reply just after the first and its filed the original twice !

Select as Best AnswerUndo Best Answer

user
seandogue (author)steveastrouk2011-05-07

(old bug. that behavior has been happening to me for several months now)

Select as Best AnswerUndo Best Answer

user
steveastrouk (author)2011-05-07

What you are looking for is an Analogue to digital converter. Yes, they exist as separate components.

For what you want though, you might consider on the of the classical "digital panel meter" ICs, like the 7106.

Steve

Select as Best AnswerUndo Best Answer

user
steveastrouk (author)iceng2011-05-07

Do you know, I think too many people have forgotten the old 7106 - they just buy meters off of Ebay.

Select as Best AnswerUndo Best Answer