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#1
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad
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Bad OpAmp Spice Models?
I'm trying to make a list of OpAmp Spice models that either poorly
model power supply currents, or not at all. Suggestions, hopefully with details of how they deviate from the real device, would be appreciated. Thanks! ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: Contacts Only | | | Voice480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food. |
#2
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad
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Bad OpAmp Spice Models?
On Thu, 19 Sep 2013 09:20:25 -0700, Jim Thompson wrote:
I'm trying to make a list of OpAmp Spice models that either poorly model power supply currents, or not at all. Suggestions, hopefully with details of how they deviate from the real device, would be appreciated. So, you're working on a model for the people who do the "connect a PNP booster to the power supply pin" dodge? -- Tim Wescott Wescott Design Services http://www.wescottdesign.com |
#3
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad
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Bad OpAmp Spice Models?
On Thu, 19 Sep 2013 14:08:14 -0500, Tim Wescott
wrote: On Thu, 19 Sep 2013 09:20:25 -0700, Jim Thompson wrote: I'm trying to make a list of OpAmp Spice models that either poorly model power supply currents, or not at all. Suggestions, hopefully with details of how they deviate from the real device, would be appreciated. So, you're working on a model for the people who do the "connect a PNP booster to the power supply pin" dodge? Not specifically for that application. Just generally. Since that seems a common complaint. But I've done that very "dodge" myself. Early '70's, LDO with 2N2907 plus LM741 ;-) Worked a peach EXCEPT I found out that not everyone's 741 was actually the same circuit schematic... I was making hybrids at the time, 741 in chip form. ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: Contacts Only | | | Voice480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food. |
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