Circuit Collection

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Circuit Collection

NOTE
If you're new to SPICE, the RC Low-Pass Filter is a great place to start.

DISCLAIMER

new

BJT Current Source

Simplified Audio Amp Model

Diff Amp with Current Mirror

OP AMP APPLICATIONS

Programmable Gain Amplifier (PGA) Op Amp

Triangle Wave Generator

Op Amp Comparator with Hysteresis

Driving a Capacitive Load

Op Amp PID Controller

Summing Amplifier

Single-Supply AC Inverting Amplifier

H-Bridge Power Amp

Integrator

Differentiator

Op Amp Differentiator - Open Loop Analysis

Wien Bridge Oscillator

Transimpedance Amplifier

Current Source

Precision Half-Wave Rectifier

Op Amp Limiter

OP AMP BASICS

Inverting Amplifier

Non-Inverting Amplifier

Differential Amplifier

Basic Op Amp Model

Op Amp Bandwidth
Op Amp Feedback Analysis

Input Offset Voltage

Input Bias Current

GENERAL CIRCUITS & MODELS

The 555 Timer

Analog Behavioral Modeling

Basic Digital Gates

DC Motor Model

Common Emitter Transistor Amplifier

Voltage Regulator w/ Series-Pass Transistor

Push-Pull Output Stage

Transistor Differential Amplifier

Voltage-Controlled Resistor
Potentiometer Model

Capacitor Model

The Miller Effect

SWITCH-MODE POWER SUPPLIES

SMPS Basics - The Buck Converter

SMPS Power Loss

Buck Converter - Voltage Mode Control

Buck Converter - AC Model

Buck Converter - Compensation

SPICE Power Meter

SWITCHED-CAPACITOR CIRCUITS

Switched-Capacitor Resistor

Switched-Capacitor Integrator

AUDIO AMPLIFIERS

Basic Audio Amplifier

Diff Amp with Current Mirror

Output Stage

The Miller Integrator

Simplified Audio Amp Model

BJT Current Source new!

Using the Circuit Collection

Here’s a growing source of circuits from today’s application notes, data sheets and textbooks. Use the collection anyway that works for you:

1. Download the SPICE file and off you go! Simulate, modify, expand it any way you like.

2. Read the circuit notes for a brief tour of how it works along with some hands-on design and analysis. Like a buffet table take as little or as much as you need.

3. Simulate your own circuits. Find a circuit similar to your interest. Then, modify it to fit your needs.

DESIGN TOPICS

Sampling Theory

Pulse Width Modulation

The PID Controller

Component Tolerances - Part I

Component Tolerances - Part II

Noise Analysis - Resistor Example

Power Supply Bypassing

Transmission Line Terminations

ADC INPUT DRIVERS

Single-Ended to Single-Ended

Differential to Single-Ended

Single-Ended to Differential

Differential to Differential

Fully Differential Amplifier

FILTERS

Audio Tone Controls

Multiple Feedback Band-pass Filter

RC Low-Pass Filter

Sallen-Key Low-Pass Filter

SENSORS & INSTRUMENTATION

Sensor Bridge
Sensor Bridge with Current Bias
Instrumentation Amp (3 Op Amp)
NTC Thermistor Model
Linearized NTC Thermistor
Thermistor Preamp

OP AMP MODELS

Op Amp Macro-Models

Basic Op Amp Model

Intermediate Op Amp Model

Advanced Functions

2nd Gain Stage

Frequency Shaping Stages

Output Voltage Limiting

Output Current Limiting

Supply Correction Current

Common-Mode Rejection

Op Amp Input Voff and Ibias

Easy to Use Functions new!

Slew Rate Using TANH

Output Voltage Limiter

Output Current Limiter

SPICE TOPICS

A Brief History of SPICE

Why Simulate?

Limitations of SPICE!

THE SPICE ALGORITHM

Take a look inside the SPICE engine. How it works...

Nodal Analysis
Non-Linear DC Analysis
Transient Analysis
Algorithm Overview

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