chopper stabilized amplifier design

[[email protected]]

Hi All
I am trying to simulate a chopper stabilized amplifier circuit using
multisim or LTspice.

Does anyone have any resource(i.e. schematic files or detail
schematics) related to implementing chopper stabilized amplifier using
Multisim or LTspice. Could you please send me a copy?

I really appreciate your help

Thanks in advance

 

[rush3k]

Hi All
I am trying to simulate a chopper stabilized amplifier circuit using
multisim or LTspice.

Does anyone have any resource(i.e. schematic files or detail
schematics) related to implementing chopper stabilized amplifier using
Multisim or LTspice. Could you please send me a copy?

I really appreciate your help

Thanks in advance

I have not noticed any chopper modulator type device or component part
in LTSpice, then again I'm not a regular user of the software.
However, you can design your chopper modulator using MOSFETs as
switches. See the paper: "A CMOS Low-Noise Instrumentation Amplifier
Using Chopper Modulation" by Nielsen and Bruun.

 

[Ken Smith]

I have not noticed any chopper modulator type device or component part
in LTSpice, then again I'm not a regular user of the software.
However, you can design your chopper modulator using MOSFETs as
switches. See the paper: "A CMOS Low-Noise Instrumentation Amplifier
Using Chopper Modulation" by Nielsen and Bruun.

The LTC1043 is in there.

You can also make a fairly simple model of a relay.

 

[tiger66]

The LTC1043 is in there.

You can also make a fairly simple model of a relay.

Hi
I searched the component name LTC1043 on LTspice, but I can't seem to
find it. Is it an extra component I need to download?

If you have one, can you please email me a copy?

I simulate my chopper stabilized circuit on multisim because I can't
find a way to generate spectral analysis of a signal on LTspice. Can
LTspice do spectral analysis?

A major problem I have right now is I can't get the opamp stage of my
chopper stabilized amplifier to work. I try to simulate Fig4a in the
article "A CMOS Chopper Amplifier" by Christian C. ENZ.

I can get the input modulator to work but after I attach the opamp, I
get a "timestep too small" error message every time I simulate. I
tried changing the end time to a big number, but it doesn't fix the
problem either

Can someone please give me some assistant.

I can email you the article and my multisim file if that makes it
easier to understand my problem

Thanks