Problem with an IC - AD621

Status
Not open for further replies.

djalli

Advanced Member level 3
Joined
Nov 10, 2001
Messages
825
Helped
31
Reputation
62
Reaction score
15
Trophy points
1,298
Location
1600 Pennsylvania Avenue, Washington DC 20500
Activity points
8,284
I use AD621 to amplify with gain 10 by connecting pins 1 and 8 and the output is slightly different. Instead of getting 3volts for 300mV 100Hz input I get 3.9volts.
Is something wrong I am doing here?
Vcc=6volts.

Is any better version of AD621? I use it because of CMMR is over 95dB.
thanks.
 

May be the connection between pins 1 and 8 has a resistance.
 

...from analog device ad621 data sheet page 15

GROUNDING
Since the AD621 output voltage is developed with respect to the
potential on the reference terminal, it can solve many grounding
problems by simply tying the REF pin to the appropriate
“local ground.”
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…