INDUSTRY COMPONENT

Operational Amplifier (Op-amp)

High-gain voltage amplifier with differential inputs and single-ended output for signal conditioning in industrial circuits.

View Specifications

Component Specifications

Definition
An operational amplifier (op-amp) is an integrated circuit that amplifies voltage differences between its two input terminals, providing high input impedance, low output impedance, and high gain. In industrial signal conditioning circuitry, it processes weak sensor signals (from temperature, pressure, strain gauges, etc.) by amplifying, filtering, or converting them into robust, standardized signals for control systems, data acquisition, or monitoring.
Working Principle
Operates using negative feedback to control gain and linearity: differential input voltage is amplified by a high open-loop gain (typically 100,000+), and feedback networks (resistors, capacitors) set closed-loop characteristics (gain, bandwidth, impedance). Key principles include virtual short (inputs at same potential in negative feedback) and high common-mode rejection ratio (CMRR) to reject noise.
Materials
Silicon semiconductor with doped regions for transistors; package materials: plastic (DIP, SOIC) or ceramic (for high-temp); gold or copper bonding wires; tin/lead or lead-free solder.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Slew Rate0.5 V/μs to 1000 V/μs
Package TypesDIP-8, SOIC-8, SOT-23
Supply Voltage±5V to ±18V
Input Offset Voltage0.1 mV to 5 mV
Operating Temperature-40°C to 125°C
Gain Bandwidth Product1 MHz to 100 MHz
Common Mode Rejection Ratio70 dB to 120 dB

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards
IEC 60747, JEDEC JESD22

Parent Products

This component is used in the following industrial products

Signal Conditioning Circuitry

Electronic circuitry that processes raw signals from optical sensors to prepare them for further analysis or conversion.

View Product Details

Signal Conditioning Circuit

Electronic circuit that prepares raw sensor signals for processing by industrial control systems

View Product Details

Analog Output Stage

The final stage in a Digital-to-Analog Converter (DAC) that converts processed electrical signals into continuous analog output signals suitable for driving external loads.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Thermal drift affecting gain stability
  • Oscillation due to improper feedback
  • Electrostatic discharge (ESD) damage
  • Saturation from input overvoltage
FMEA Triads
Trigger: Excessive thermal stress or aging
Failure: Gain drift or offset voltage shift
Mitigation: Use op-amps with low temperature coefficients; implement thermal management (heat sinks); regular calibration.
Trigger: Inadequate power supply decoupling
Failure: Oscillation or noise amplification
Mitigation: Place bypass capacitors (0.1 μF) near supply pins; follow PCB layout best practices.

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
Gain tolerance ±1% to ±10%; input offset voltage < 1 mV for precision apps
Test Method
Per IEC 60747: measure gain, bandwidth, CMRR with network analyzers; environmental testing per JEDEC standards.

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Operational Amplifier (Op-amp)

Manufacturer profiles associated with Operational Amplifier (Op-amp).

Sourcing Operational Amplifier (Op-amp) from China?
Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.
Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Related Components

Marking Ink
Specialized ink for permanent identification on surface mount resistors during manufacturing.
Dielectric Layer
Insulating layer in surface mount capacitors that stores electrical energy through polarization.
Optical Window
Transparent optical component for light transmission in polycarbonate lens housings
PCB Substrate
PCB substrate is the foundational insulating layer that provides mechanical support and electrical connectivity for electronic components in high-speed memory modules.

Frequently Asked Questions

What is the role of an op-amp in industrial signal conditioning?

It amplifies weak sensor signals (e.g., from thermocouples or pressure transducers) to usable levels, filters noise, and provides impedance matching for accurate data acquisition and control in industrial machinery.

How do I choose an op-amp for high-noise environments?

Select op-amps with high Common-Mode Rejection Ratio (CMRR > 90 dB), low input offset voltage, and adequate bandwidth. Use shielding and proper PCB layout to minimize electromagnetic interference.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Request Manufacturing Insight for Operational Amplifier (Op-amp)

Thank you. Your request has been sent. We'll respond within 1–3 business days.
Sorry, we couldn't send your message. Please try again, or email us at contact@cnfx.com.
XOR Gate
Get QuotesChat