Operational Amplifiers: Supply Voltage ±5 V to ±18 V

Component Specifications

Definition

An operational amplifier (op-amp) is an integrated circuit that amplifies the voltage difference between its two input terminals, providing high input impedance, low output impedance, and high gain. In instrumentation amplifiers, it serves as the core building block for precise amplification of small differential signals from sensors while rejecting common-mode noise, ensuring accurate measurement in industrial environments.

Working Principle

Operational amplifiers function based on negative feedback to control gain and linearity. They compare voltages at inverting (-) and non-inverting (+) inputs, amplifying the difference. In instrumentation amplifiers, multiple op-amps are configured with precision resistors to achieve high common-mode rejection ratio (CMRR), high input impedance, and adjustable gain, enabling accurate amplification of weak sensor signals like those from strain gauges or thermocouples.

Materials

Silicon semiconductor with doped regions, metal interconnects (aluminum or copper), passivation layers (silicon dioxide or nitride), and plastic or ceramic packaging (e.g., DIP, SOIC).

Technical Parameters

Parameter	Typical range	Notes & selection driver
Package Type	DIP-8, SOIC-8
Supply Voltage	±5 V to ±18 V
Input Offset Voltage	0.1 µV to 5 mV
Operating Temperature	-40°C to 125°C
Gain Bandwidth Product	1 MHz to 100 MHz
Common Mode Rejection Ratio	80 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

ISO 9001, IEC 60747, JEDEC JESD22

Parent Products

This component is used in the following industrial products

Instrumentation Amplifier

A specialized differential amplifier designed for precise measurement and signal conditioning applications.

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Signal Conditioning Board

Electronic circuit board that processes raw sensor signals for accurate measurement and transmission

View Product Details

Engineering Analysis

Risks & Mitigation

Thermal drift affecting offset voltage
Electrostatic discharge (ESD) damage
Saturation from input overvoltage
Noise interference in high-gain applications

FMEA Triads

Trigger: Excessive thermal stress
Failure: Increased offset voltage drift
Mitigation: Use op-amps with low temperature coefficients and proper heat sinking.

Trigger: ESD exposure during handling
Failure: Internal semiconductor damage
Mitigation: Implement ESD protection circuits and follow anti-static protocols.

Trigger: High common-mode voltage
Failure: Reduced CMRR and signal distortion
Mitigation: Select op-amps with high CMRR and use shielding in cabling.

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.1% for gain-setting resistors, ±5% for voltage offset

Test Method

ASTM F1241 for electrical performance, IEC 61000-4-2 for ESD immunity

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 Amplifiers

2 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Himax Technologies, Inc.

Taiwan, CN

Also makes: Operational Amplifier, Power Management Module, Timing Controller and 4 more

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “Operational Amplifiers”
View source page ↗ himax.com · checked 2026-09-14

View profile Send enquiry

SG Micro (Beijing) Co., Ltd.

Beijing, CN

Also makes: DC-DC Converter, Power Management, Power Semiconductor Devices (IGBTs/SCRs) and 9 more

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “Operational Amplifiers (OpAmps)”
View source page ↗ sg-micro.com · checked 2026-09-07

View profile Send enquiry

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

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the role of an op-amp in an instrumentation amplifier?

It amplifies small differential signals from sensors while rejecting common-mode noise, ensuring accurate and stable measurements in industrial systems.

How does CMRR affect performance in industrial environments?

High CMRR (e.g., >100 dB) minimizes interference from electrical noise, crucial for reliability in noisy settings like factories or automotive applications.

Can op-amps be replaced in instrumentation amplifiers?

Yes, but selection must match specs like gain bandwidth, offset voltage, and temperature range to maintain precision and compatibility.

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.

Operational Amplifiers