A diode model looks like
.model 1N4148 D(Is=2.52n Rs=.568 N=1.752 Cjo=4p M=.4 tt=20n Iave=200m Vpk=75 mfg=OnSemi type=silicon)
If I want to model some other diode c-v curve, I can edit Cjo as needed. But what parameter would change the shape of the curve, how c declines with voltage?
I'm modeling a weird photodiode and I can get close to the actual datasheet values, but the shape is a little off.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
ave=200m
Fc?
Fc is a forward-bias parameter. I could try things, but I was hoping some guru would know.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
This looks like it, sheet 15:
-- John Larkin Highland Technology, Inc lunatic fringe electronics
Use the "idealized" model at your own peril. ...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| STV, Queen Creek, AZ 85142 Skype: skypeanalog | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
Thinking outside the box... producing elegant solutions.
M, FC, VJ...
...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| STV, Queen Creek, AZ 85142 Skype: skypeanalog | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
Thinking outside the box... producing elegant solutions.
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