AD8276 Noise

The noise models are:

***Voltage Noise Generation
HVnoise 9 7 Vvnoise 1
VVnoise 501 0 0
DVnoise 501 0 Dvnoise
RVnoise 501 0 3.37959E-06
***Current Noise Generation on +IN
FInoise1 12 0 VInoise1 1
VInoise1 502 0 0
DInoise1 502 0 DInoise1
RInoise1 502 0 287500
***Current Noise Generation on -IN
FInoise2 2 0 VInoise2 1
VInoise2 503 0 0
DInoise2 503 0 DInoise2
RInoise2 503 0 287500

.model Rideal res T_ABS=27
.model Rnoise res T_ABS=27
.model npn npn BF= 8333332.33333333
.model dquiet d
.model dvnoise d KF=980000
.model dinoise1 d KF=0.000576
.model dinoise2 d KF=0.000576
.model dzener d BV=38.9444143409777
.model dzener2 d BV=50

Similar for the AD8278

Hi,

I will check with the spice model developer of this part for information and get back to you.

Regards,

Arthur

Hello, 

Has this issue been resolved? I'm facing a similar problem with the AD8278. 

Thanks,

Alex

Hi,

Sorry for the delay but the spice model issue is not yet resolved. We are trying to fix this. We will update you as soon as we finish the fix.

Thanks,

Arthur

Hi,

Would be nice to get an updated SPCE model, the noise is still the same...

Regards,

Thomas

Hi Thomas,

Sorry that this was not priotirized as of late. I'll see if I can do a quick fix on this.

Hi Thomas,

Can you try the attached model?

ad8276.zip

Thanks that one works:

I checked the total Output Voltage Noise, and that matches the datasheet now
(2 μV p-p for f = 0.1 Hz to 10 Hz
65 nV/√Hz @ 1kHz)...

Very helpful!

Regards,
Thomas