开云体育

Jon, The .asc file below might get you started there. --Mike Version 4 SHEET 1 892 900 WIRE 320 576 320 528 WIRE 320 448 320 400 WIRE 320 304 320 240 WIRE 320 240 128 240 WIRE 128 240 128 256 WIRE 128

I am trying to run a Burr Brown Op Amp, the OPA336. The transient analysis "sort of" runs but LTSpice notes a couple of problems, most notably unrecognized parameters, jssw and vfb. The AC analysis

I'm interested in calculating iterative values for resistors. For example, an emitter resistor's value may be based on the emitter voltage divided by some current I need to have. However, the emitter

Wonderful! That works better than I'd hoped. Glad you added the extra code to make that happen during updating.

Jon, The selection dialogs for bipolars, jfets, diodes, and mosfets use the .model entries in the files ./lib/cmp/standard{.bjt,.jft,.dio,.mos} You can edit these with a text editor(or LTspice) to add

--- In LTspice@..., Panama Mike <panamatex@y...> wrote: > John, > > > I was really puzzled by the complicated G- > > source _expression. That all makes sense now. > > Yeah. I just put up a

I know that I can create my own library files and use .include to specify them. But is it possible to extend the dialog box list for the NPN transistors, for example, so that I can simply select from

John, Yeah. I just put up a version, 2.00l. It lets you duplicate the leakage of PSpice current sources in LTspice. Go to Tools=>Control Panel=>SPICE and check "Add GMIN across current sources" Then

--- In LTspice@..., Panama Mike <panamatex@y...> wrote: > John, > > > Are there any special considerations with using > > P-spice op-amp macro models with LTspice? I'm > > trying to

The golden rule in analogue design is that n simulators give n different answers, you have to be able to hand-verify results to some extent. I tell the engineers here, half-jokingly that simulation

John, As has been pointed out, the non-E version of the models do leak much more than the product. That's the model. The E versions are supposed model input bias current and it still leaked too much

macro getting The the high OPA129 just confident

<helmutsennewald@y...> wrote: amp confident entered

I get similar problems with the OP27A, although in my case it is the noise that is reported about 2 orders more than the data sheet and han

wrote: uses website. in a to

<helmutsennewald@y...> wrote: a OPA129

macro getting The the high just confident Hello John, I tried to verify your results a

Are there any special considerations with using P-spice op-amp macro models with LTspice? I'm trying to simulate a circuit that uses a Burr Brown/TI electrometer op-amp (OPA128 or OPA129) and I'm

files -

Jon, No really, but the cursors are helpful. You can get a quick idea by dragging a box as if you were going to zoom that just touches the peak and valley points and looking at the dy value on the