Operational Amplifiers | Op Amp ICs, Circuits & Sourcing
Op Amp ICs
Wide selection of high-performance op amp ICs from leading brands
Circuits
Explore common op amp circuits and reference designs
Sourcing
Find trusted suppliers and competitive pricing for your needs
Choose the Right Operational Amplifier for Your Design
Compare common op amp categories by application, signal condition and package requirement. Use these options to narrow the device family before requesting pricing, availability or replacement support.
General-Purpose Op Amps
Reliable choices for everyday amplification, buffering, sensor interface and low-speed control circuits.
- Best for:
- cost-sensitive designs, broad availability and standard replacement requests.
- Popular options:
- LM358, LM324, LM2904, UA741.
Precision Op Amps
Designed for stable low-level signal paths where offset, drift and measurement accuracy are important.
- Best for:
- DC measurement, bridge sensors, instrumentation and precision control.
- Popular options:
- OP07, OP177, OPA227, AD8605.
Low-Noise Audio Op Amps
Selected for clean signal paths where low noise, low distortion and output drive affect audio performance.
- Best for:
- audio preamps, active filters, mixers and high-gain signal chains.
- Popular options:
- NE5532, NE5534, TL072, OPA2134.
Rail-to-Rail Op Amps
Useful when a low-voltage or single-supply circuit needs more usable input or output signal range.
- Best for:
- 3.3 V, 5 V, battery-powered and compact embedded designs.
- Confirm:
- input range, output swing, load condition and stability requirements.
JFET / CMOS Input Op Amps
Recommended for high-impedance sources where low input bias current helps protect signal accuracy.
- Best for:
- sensors, photodiodes, sample-and-hold circuits and low-loading interfaces.
- Popular options:
- TL071, TL072, TL082, LF356.
Dual & Quad Op Amps
Good for multi-channel boards that need fewer packages, simpler BOM management and efficient layout.
- Best for:
- multi-sensor boards, audio channels, control loops and space-limited PCB layouts.
- Popular options:
- LM358, LM324, TL072, TL074.
Already have a part number or BOM list? Send the package, quantity, preferred brand and acceptable alternatives for sourcing support.
Upload BOMWhich op amp type do I need?
Start from the application. Simple low-speed buffering may use general-purpose parts, while precision, audio, rail-to-rail, high-speed and high-impedance designs need parameter-first selection.
Can I replace LM358 with another dual op amp?
Yes, but only after checking pinout, package, supply range, input common-mode range, output swing, bandwidth, offset, output current and temperature grade.
When does an audio circuit need a low-noise op amp?
Use low-noise options when the signal is small, gain is high, source impedance is sensitive or the circuit feeds an audio path where hiss and distortion affect the final product.
Should I choose single, dual or quad?
Channel count affects PCB area, routing, thermal concentration and procurement flexibility. Dual and quad parts simplify BOMs, while single devices can isolate critical channels.
What information should I send for a quote?
Send the part number, package, manufacturer preference, quantity, target price, acceptable equivalents, application, voltage rails and any lifecycle or certification requirements.
Why source op amps through ApexComponent?
For production and repair projects, sourcing is not just price. It includes availability, package matching, alternative review, datasheet confirmation and BOM-level risk control.
Operational Amplifier Product Finder
Browse selected operational amplifier ICs by function, then open the product page for package, sourcing and BOM review details.
Featured Operational Amplifier Products
Compare popular general-purpose, audio, JFET-input, precision and zero-drift op amp options available from ApexComponent.
| Part / Family | Function | Product Focus | Key Checks | Action |
|---|---|---|---|---|
| LM358DRMultiple manufacturers / generic | General | Dual general-purpose op amp for single-supply sensing, buffering and low-speed control. | SOIC-8 package, supply range, output swing and pin-compatible replacement rules. | View Product |
| LM324DRMultiple manufacturers / generic | General | Quad op amp for multi-channel analog control, sensor input and BOM reduction. | SOIC-14 package, channel count, supply rails and output behavior. | View Product |
| NE5532DRTexas Instruments | Audio | Dual low-noise op amp for audio preamps, active filters and signal-path replacement. | SOIC-8 package, noise, supply rails, output drive and genuine-source requirement. | View Product |
| TL071CDRTexas Instruments | JFET | Single JFET-input op amp for high-impedance sources, audio and active filter circuits. | SOIC-8 package, input bias current, noise, supply range and bandwidth. | View Product |
| TL072CDRTexas Instruments | JFET | Dual JFET-input op amp for audio, sensor and low-bias-current signal paths. | SOIC-8 package, input impedance, bandwidth, noise and supply rails. | View Product |
| TL074CDRTexas Instruments | JFET | Quad JFET-input op amp for multi-channel audio, filtering and high-impedance stages. | SOIC-14 package, channel count, bias current and board footprint. | View Product |
| OPA2134UATexas Instruments | Audio | Dual audio op amp for low-distortion audio signal paths and high-quality preamp stages. | SOIC-8 package, distortion, noise, output drive and supply voltage. | View Product |
| OPA2277UATexas Instruments | Precision | Precision dual op amp for stable DC measurement, signal conditioning and instrumentation-style circuits. | SOIC-8 package, offset voltage, drift, bias current and grade requirements. | View Product |
| OPA333AIDBVRTexas Instruments | Zero-Drift | Zero-drift precision op amp for low-offset sensing and compact measurement circuits. | SOT-23-5 package, offset, drift, supply range and layout constraints. | View Product |
| MCP6002-I/SNMicrochip Technology | CMOS | Dual CMOS op amp for low-power single-supply analog sensing and control circuits. | SOIC-8 package, supply range, rail behavior and Microchip suffix. | View Product |
Operational Amplifier Type Comparison
Compare common op amp types by selection reason, key electrical parameters, example models and sourcing risk before choosing a replacement or sending an RFQ.
| Type | Typical reason to choose | Key parameters | Example models / families | Sourcing risk |
|---|---|---|---|---|
| General-purpose | Available, low cost, enough for common low-speed circuits. | Supply range, output swing, bandwidth, package | LM358, LM324, UA741 | Package and manufacturer suffix variations |
| Precision | Low offset and stable DC accuracy. | Offset voltage, drift, bias current, noise | OP07 and precision equivalents | Grade and suffix must match requirement |
| Low-noise audio | Audio and low-level signal path performance. | Voltage noise, distortion, slew rate, output drive | NE5532, TL072-style families | Counterfeit and source-quality sensitivity |
| Rail-to-rail | Low-voltage single-supply operation near rails. | Input common-mode, output swing, supply voltage | RRIO CMOS families | Input and output rail behavior differs by device |
| JFET / CMOS input | High-impedance source and low input bias current. | Bias current, noise, bandwidth, input voltage range | TL072, TL082, CMOS-input options | Not always pin/performance compatible |
Operational Amplifier Applications
Different circuits place different demands on an op amp. Review the application first, then match the input type, noise level, output load, package and lifecycle requirements.
Sensor Signal Conditioning
For bridge sensors, photodiodes and low-level analog inputs where source impedance and DC error matter.
- Focus:
- offset, bias current, noise and common-mode input range.
- Often suited:
- precision, JFET or CMOS input families.
Audio Preamplifiers
For preamps, mixers and audio signal chains where noise and distortion affect user-visible performance.
- Focus:
- voltage noise, THD, slew rate, bandwidth and output drive.
- Common starts:
- NE5532, TL072 and audio-grade alternatives.
Voltage Buffer
For impedance matching and unity-gain stages between sensors, filters, ADC inputs and control circuits.
- Focus:
- unity-gain stability, output swing, load capacitance and input range.
- Confirm:
- capacitive-load behavior under the target PCB conditions.
Active Filter Circuits
For low-pass, high-pass and band-pass filters where the amplifier and R/C network work together.
- Focus:
- gain bandwidth, slew rate, noise and component tolerance.
- Confirm:
- filter performance at the required frequency and gain.
Industrial Control
For production equipment, PLC-related boards and harsh operating environments where continuity matters.
- Focus:
- temperature grade, supply rails, package robustness and lifecycle status.
- Confirm:
- approved replacements and long-term availability.
Legacy Repair
For older circuits using UA741, LM741, LM358, NE5532 or obsolete package variants.
- Focus:
- pinout, suffix, package, supply range and behavior in the original circuit.
- Confirm:
- genuine supply and safe equivalent options before replacement.
Need help matching an op amp to an application? Send the circuit role, part number, package and quantity for sourcing support.
Request Application SupportCommon Op Amp Circuit Functions
Choose the op amp by the way the circuit handles the signal. Gain stage, buffer and differential inputs each place different requirements on bandwidth, input range, load drive, noise and package compatibility.
Inverting Amplifier
Used for controlled gain with inverted signal polarity. It is common in filters, summing stages and signal conditioning circuits where resistor-set gain is acceptable.
Non-Inverting Amplifier
Used when the signal polarity must stay the same and the source should see high input impedance. A common choice for sensor outputs and general analog gain stages.
Voltage Follower
Used to isolate one circuit stage from another without changing voltage gain. It helps drive ADC inputs, cables, filters and other loads that may affect the source signal.
Differential Amplifier
Used when the useful signal is the difference between two inputs. It is often considered for bridge sensors, measurement circuits and noise-sensitive signal paths.
Parameters to Confirm Before Purchase
Use these electrical and sourcing parameters to compare op amp options before you request a quote or approve an equivalent device for a design, repair project or production BOM.
| Parameter | Why it matters | Common user query | Procurement check |
|---|---|---|---|
| Supply voltage | Determines whether the part works in single-supply, dual-supply or low-voltage systems. | single supply op amp, high voltage op amp | Match datasheet operating range to design rails. |
| Gain bandwidth | Limits usable closed-loop gain at the target signal frequency. | op amp gain, gain bandwidth | Confirm margin for gain and signal bandwidth. |
| Slew rate | Affects distortion and large-signal response in audio or fast analog paths. | high speed op amp | Compare against signal amplitude and frequency. |
| Input offset voltage | Creates DC error in precision measurement and low-level amplification. | offset voltage in op amp | Review grade, drift and temperature range. |
| Input bias current | Can create errors with high source impedance sensors. | input bias current op amp | Consider JFET or CMOS input options. |
| Noise | Controls signal quality in audio, sensors and high-gain circuits. | low noise op amp, audio op amp | Review voltage noise, current noise and source impedance. |
Why Source Operational Amplifiers Through ApexComponent?
ApexComponent helps purchasing teams and engineers review part numbers, package suffixes, equivalent options and supply constraints before an operational amplifier is added to a BOM or replacement order.
Part Number Matching
Send exact model, suffix, package and manufacturer preference. We help review whether the requested supply can match the BOM line.
Alternative Review
When the original part is constrained, compare package, pinout, supply, bandwidth, offset, input type and output swing before approving substitutes.
Production Quantities
For production builds, quantity, lead-time tolerance and acceptable brands should be stated with the RFQ.
Repair Sourcing
For older UA741, LM741, LM358 or NE5532 replacements, sourcing may prioritize compatibility and authenticity over lowest price.
Operational Amplifier Sourcing Notes
Common op amp requests often need more than a model number. Use these notes to prepare package, supply, authenticity and replacement details before submitting an RFQ.
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Operational Amplifier FAQ
What is an operational amplifier and what is it used for?
An operational amplifier, or op amp, is a high-gain differential amplifier IC used with feedback networks to build amplifiers, buffers, filters, signal conditioners, audio stages and measurement circuits.
How do I choose the right operational amplifier for my circuit?
Start with the circuit function, then confirm supply voltage, input range, output swing, gain bandwidth, slew rate, noise, offset voltage, input bias current, package and sourcing availability.
What is the difference between LM358 and LM324?
LM358 is commonly used as a dual general-purpose op amp, while LM324 is a quad op amp. The choice mainly depends on channel count, PCB area, package, supply range and circuit requirements.
When should I use a single, dual or quad op amp?
Use a single op amp for isolated channels, a dual op amp when two amplifier stages can share one package, and a quad op amp when BOM reduction and PCB space are more important.
Which op amp is suitable for audio applications?
Audio circuits usually require low noise, low distortion, suitable slew rate, enough bandwidth and proper output drive. NE5532, TL072 and related audio or JFET-input families are common starting points.
Can an op amp be used as a comparator?
An op amp can work in comparator-like low-speed circuits, but a dedicated comparator is usually better when switching speed, logic output compatibility or input overdrive behavior matters.
What is a rail-to-rail op amp?
A rail-to-rail op amp is designed so its input range, output swing or both can operate close to the supply rails. It is useful in low-voltage and single-supply circuits.
What should I check before approving an op amp equivalent?
Check pinout, package, supply voltage, input common-mode range, output swing, bandwidth, slew rate, offset voltage, bias current, noise, temperature grade and manufacturer status.
What information should I send when requesting an op amp quote?
Send the part number, package, quantity, preferred manufacturer, target application, supply voltage, acceptable equivalents and whether original-brand or production-grade sourcing is required.
Can ApexComponent help source obsolete or hard-to-find op amps?
Yes. ApexComponent can help review legacy part numbers, package suffixes, available sources and possible alternatives for obsolete, constrained or repair-related operational amplifier requests.
Ready to Source Operational Amplifiers?
Send your part number, package, quantity, preferred manufacturer and acceptable alternatives. ApexComponent can help source LM358, LM324, NE5532, OP07, UA741, TL072 and related operational amplifier ICs.