Schematic for Opamp Stability [Sim]

AC Sweep Phase Margin Simulation

nico

Run an AC sweep using the @simulator and show the phase margin at the gain crossover frequency.

76 days

copilot

worked for 0:32

General

Project

I have 1 question before running the AC sweep:

Should I use a generic op-amp model (open-loop gain 100 dB, dominant pole at 10 Hz) for U2, or do you have a specific SPICE macro-model you’d like me to use?

76 days

nico

Let's use the generic op-amp model with 100 dB gain and 10 Hz pole. Please proceed with the AC sweep.

76 days

copilot

worked for 7:38

General

Chat History

Project

Simulator (Beta)

Here’s the summary of the AC sweep:

Table

Metric	Value
Gain Crossover Frequency (f_gc)	≈ 91 kHz
Phase Margin at f_gc	≈ 90°

Let me know if you need further analysis or a plot of the Bode response!

76 days

sherilynolivec3po844848

The phase margin of ~90° looks good. Please show me a combined Bode plot with both magnitude and phase curves.

4 days

copilot

is working...

4d 15:32:48

Sorry, something went wrong. Please try again later.

BATT2

-18v

+18v

BATT1

-18v

Resistance

1K Ω

Resistance

10K Ω

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Overlapping Copper • 1

	Des	Net	Des	Net
	Cathode	Net 3	Anode	GND

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Airwires • 8

	Designators	Net
	BATT2:2, U2:7	Net 5
	Cf:2, U2:6	Net 2
	Cf:2, Rf:2	Net 2
	R1:2, U2:2	Net 1
	U2:2, Rf:1	Net 1
	BATT1:1, U2:4	Net 4
	V1:2, R1:1	Net 3
	Via-5-3:Via-5-3, V1:1	GND

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Reports layers that have multiple copper fills of different nets. Make sure the Connected Layers rule value of nets with fills is valid.

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Terminal
An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
natarius
Ground
A common return path for electric current. Commonly known as ground.
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Net Portal
A net identifier used to create connectivity to other Net Portal with the same designator. #portal
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Power Net Portal
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Generic Resistor
A generic fixed resistor for rapid developing circuit topology. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0Ω 10Ω 100Ω 1.0kΩ 10kΩ 100kΩ 1.0MΩ 1.1Ω 11Ω 110Ω 1.1kΩ 11kΩ 110kΩ 1.1MΩ 1.2Ω 12Ω 120Ω 1.2kΩ 12kΩ 120kΩ 1.2MΩ 1.3Ω 13Ω 130Ω 1.3kΩ 13kΩ 130kΩ 1.3MΩ 1.5Ω 15Ω 150Ω 1.5kΩ 15kΩ 150kΩ 1.5MΩ 1.6Ω 16Ω 160Ω 1.6kΩ 16kΩ 160kΩ 1.6MΩ 1.8Ω 18Ω 180Ω 1.8KΩ 18kΩ 180kΩ 1.8MΩ 2.0Ω 20Ω 200Ω 2.0kΩ 20kΩ 200kΩ 2.0MΩ 2.2Ω 22Ω 220Ω 2.2kΩ 22kΩ 220kΩ 2.2MΩ 2.4Ω 24Ω 240Ω 2.4kΩ 24kΩ 240kΩ 2.4MΩ 2.7Ω 27Ω 270Ω 2.7kΩ 27kΩ 270kΩ 2.7MΩ 3.0Ω 30Ω 300Ω 3.0KΩ 30KΩ 300KΩ 3.0MΩ 3.3Ω 33Ω 330Ω 3.3kΩ 33kΩ 330kΩ 3.3MΩ 3.6Ω 36Ω 360Ω 3.6kΩ 36kΩ 360kΩ 3.6MΩ 3.9Ω 39Ω 390Ω 3.9kΩ 39kΩ 390kΩ 3.9MΩ 4.3Ω 43Ω 430Ω 4.3kΩ 43KΩ 430KΩ 4.3MΩ 4.7Ω 47Ω 470Ω 4.7kΩ 47kΩ 470kΩ 4.7MΩ 5.1Ω 51Ω 510Ω 5.1kΩ 51kΩ 510kΩ 5.1MΩ 5.6Ω 56Ω 560Ω 5.6kΩ 56kΩ 560kΩ 5.6MΩ 6.2Ω 62Ω 620Ω 6.2kΩ 62KΩ 620KΩ 6.2MΩ 6.8Ω 68Ω 680Ω 6.8kΩ 68kΩ 680kΩ 6.8MΩ 7.5Ω 75Ω 750Ω 7.5kΩ 75kΩ 750kΩ 7.5MΩ 8.2Ω 82Ω 820Ω 8.2kΩ 82kΩ 820kΩ 8.2MΩ 9.1Ω 91Ω 910Ω 9.1kΩ 91kΩ 910kΩ 9.1MΩ #generics #CommonPartsLibrary
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1.5M
Generic Capacitor
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