Jump to content
Electronics-Lab.com Community

Displaying amps & volts on 1 display


Recommended Posts

I was looking at the datasheets for the Maxim ICL7135 4 1/2 Digit ADC and the ICM7211 4 Digit LCD Decoder Driver:

http://pdfserv.maxim-ic.com/en/ds/ICL7135.pdf
http://pdfserv.maxim-ic.com/en/ds/ICM7211-ICM7212.pdf

I'm still a little (actually alot!) baffled by the various display interfaces but I was wondering if 2 separate meters (a volt meter and an amp meter) were created using 2 each of the 7135/7211 chips, could they be connected to one LCD display such as a 1 line, 16 character display to show volts and amps at the same time? Or am I trying to put a square peg in a round whole? :-\

Link to comment
Share on other sites

FireFly,
Big files, the poor guys on dial-up.
You are correct, 2 each of the ICM7135 and ICM7211 ICs can be used to display volts and amps on a 16 digit, 7 segment LCD display.
Note that this is not a character display.
On the ICM7135 datasheet, page 1 shows a simple application, but using the ICM7212 LED driver. Connect your LCD the same way to an ICM7211.
Since your display will have a common backplane, syncronize the backplane drivers by using only one oscillator and connect the drivers together as described in the ICM7211 datasheet.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

×
  • Create New...