If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)

Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie

Help Keep Boards Alive. Support us by going ad free today. See here: https://subscriptions.boards.ie/.
If we do not hit our goal we will be forced to close the site.

Current status: https://keepboardsalive.com/

Annual subs are best for most impact. If you are still undecided on going Ad Free - you can also donate using the Paypal Donate option. All contribution helps. Thank you.

https://www.boards.ie/group/1878-subscribers-forum

Private Group for paid up members of Boards.ie. Join the club.

Help with ICL 7107 Digital Voltmeter

nVital · 2010-03-02 15:37:57

Hi lads, Need help with the last few pin assignments on this chip, where will the decimal point pin on the 7seg displays connect to, and where do AB4 and POL go to? Thanks Alot. http://http://www.datasheetcatalog.org/datasheet/intersil/fn3082.pdf Data Sheet ^^^^^^

02-03-2010 04:37PM

#1

nVital

Closed Accounts Posts: 36 ✭

Join Date: January 2010

Posts: 20

Hi lads,

Need help with the last few pin assignments on this chip, where will the decimal point pin on the 7seg displays connect to, and where do AB4 and POL go to?

Thanks Alot.

http://http://www.datasheetcatalog.org/datasheet/intersil/fn3082.pdf

Data Sheet ^^^^^^

0

Comments

#2 02-03-2010 04:45PM

FarmerGreen

Registered Users, Registered Users 2 Posts: 1,134 ✭✭✭

Join Date: May 2008

Posts: 986

POL is polarity ie minus sign
AB4 is 4th digit A+B segments ie the 1.
Decimal point is usually hardwired for led display, not connected to the IC, pulldown to 0v thru a suitable resistor, try 5k.
Lcd dp's use fig 6 in the datasheet and a DIL switch

0