AD8330 LTspice simulation error

Question

I am trying to build an AGC circuit with DC servo loop to keep my output AC signal around 0V. While simulating I get two errors 
 1- "Node U1:N662042 is floating and connected to current source G:U1:_G2" 
 2- Fatal Error: Analysis: Time step too small; initial timepoint: trouble with node "n007" 
 I downloaded the symbol of AD8330 from Analog devices website and changed the pins according to the datasheet. 
 
 Signal generation AGC DC servo.asc

ADIApproved · Accepted Answer

Hello PARTH0076 , I agree with MStokowski , the spice model of AD8330 has a problem and I already submitted an internal request in the past for it to be fixed. Currently, it is still on queue for a fix. For the meantime, can you try connecting the OFST pin to GND and observe if you will get some results even when there is an error? In the past, I was able to get some results even when there is an error when I tried connecting the OFST pin to GND: But when I make the OFST pin floating or connected a capacitor to it, I wasn't able to get any results aside from the error. Regards, Paul)

Popular Forums

Product Forums

Application Forums

Design Center Forums

Highlighted Webinar

Places

Libraries

Upcoming Learning & Events

Challenge Yourself!

What's Brewing

Places

Resources

Visit ContentZone

The Latest Read

New Release

Recent Technical Insights

Products Mentioned

Thread Details

AD8330 LTspice simulation error

Thread Summary