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[FAQ] Designing with general purpose op amps

Other Parts Discussed in Thread: TINA-TI, LM324, LM358

Last Updated: March 18, 2021

This FAQ covers a wide breadth of topics relating to designing with general purpose op amps and provides circuit design ideas and approaches while highlighting some of our latest products.


Golden reference sources

Analog Engineer's Circuit Cookbook: Amplifiers: Learn how to simplify and speed up system design with our comprehensive library of sub-circuit ideas. Our analog engineer’s circuit amplifier cookbook offers 60+ sub-circuit designs in an easy to use e-book. Each circuit can be easily adapted to meet your specific end equipment needs and includes step-by-step instructions, basic formulas, schematic diagrams and SPICE simulations.

Texas Instruments Precision Labs – Op Amps: TI Precision Labs is the electronics industry’s most comprehensive online classroom for analog engineers. The on-demand courses and tutorials include introductory ideas about device architecture in addition to advanced, application-specific problem-solving, using both theory and practical knowledge. Use these hands-on courses to predict circuit performance and move seamlessly from abstract concepts to specific formulae in an easy-to-follow format. Industry experts present each topic in order to help reduce design time and move quickly from proof-of-concept to production.

Analog Engineer’s Pocket Reference: Written by op amp experts Art Kay and Tim Green, the Analog Engineer's Pocket Reference covers a wide variety of popular precision signal chain topics – from op amp bandwidth and stability to analog-to-digital and digital-to-analog conversions and more. The e-book is available three ways – PDF, iPhone and Android apps and hard copy (for purchase) – so you can keep this tried-and-true reference guide at your fingertips, no matter where you are.

Analog Engineer’s Calculator: The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback resistors to selecting appropriate circuit design elements for stabilizing an analog-to-digital converter (ADC) drive buffer circuit.

The Signal: A compendium of blog posts on op amp design topics, this source was compiled by the famous analog applications engineer, Bruce Trump.

AN-31 amplifier circuit collection: This collection of analog circuits provides a thorough list of amplifier configurations for a broad range of design needs.  Circuits come with relevant equations, TINA-TI simulation files, and links to extra resources.


Choosing an op amp

What is an op amp?

Taking the family-first approach to op amp selection

Simplify your bill of materials with high-voltage amplifiers

Do You Really Need Rail-to-Rail Input Amplifiers?

Op amps with complementary-pair input stages: What are the design trade-offs?

Low Voltage, High Slew Rate Op-amps for Motor Drive Circuits

Op Amp ESD Protection Structures


LM358, LM324 and 555 timers

Application Design Guidelines for LM324/LM358 Devices

How do I design monostable timer circuits using LMC555, TLC555, LM555, NA555, NE555, SA555, or SE555?

How do I design a-stable timer circuits using LMC555, TLC555, LM555, NA555, NE555, SA555, or SE555?

How do I design a pulse width modulator (PWM) circuit using LMC555, TLC555, LM555, NA555, NE555, SA555, or SE555?

Why Users Should Consider Upgrading Their LMV324, LMV358, and LMV321 Devices


Circuit design topics

How to Design Transimpedance Amplifier Circuits

Using Operational Amplifiers as Multiplexers in Cost-Optimized Designs

Improve Stability Issues with Low CON Multiplexers

Using An Op Amp for High-Side Current Sensing

Designing for TLV90xxS operational amplifiers with shutdown

Low-side current sensing for high-performance cost-sensitive applications

Designing tiny microphone circuits with the industry’s smallest op amp

Using quad op amps to sense multiple currents

Comparing two-wire microphone circuits for automotive applications

Three ways to scale an analog input signal

Voltage scaling for almost any application (single ended)

Designing with low-power op amps


Simulation, layout, manufacturing and second-sourcing

AN-1516 SPICE Universal Test Circuits

Designing and Manufacturing with TI’s X2SON Packages

How to lay out a PCB for high-performance, low-side current-sensing designs

Second-sourcing options for small-package amplifiers

Simplifying Signal Chain Design for High Performance in Small Systems

Op Amp PCB Layout - TI Precision Labs

MSL Ratings and Reflow Profiles


Op amp cross-references

Operational amplifiers (op amps) - Cross reference tool

Operational amplifiers (op amps) - Product parametric search tool

TLV9302: What are the best cross reference replacements for the MC33202, MC33172, and MC33178 devices? P2P is preferred.

Automotive amplifiers: Is the LM2904B-Q1 a cross reference replacement for the LM2904-Q1?

OPA991: What are the best cross reference replacements for the AD711, AD8627 and ADA4000-1 devices? P2P is preferred

TLV9151: What are the best cross reference replacement for the TS921, TLV271, and AD8665 devices? P2P is preferred

TLV9351: What is the best cross reference replacement for MC33071, MIC6211, and NCS20071 devices? P2P (Pin to Pin) is preferred.