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  • OPA128LM Electrometer level operational amplifier OPA128
  • OPA128LM Electrometer level operational amplifier OPA128
  • OPA128LM Electrometer level operational amplifier OPA128
  • OPA128LM Electrometer level operational amplifier OPA128
  • OPA128LM Electrometer level operational amplifier OPA128
  • OPA128LM Electrometer level operational amplifier OPA128
OPA128LM Electrometer level operational amplifier OPA128

OPA128LM Electrometer level operational amplifier OPA128

$2.00-$10.00/ Piece|10 Piece/Pieces(Min. Order)
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OPA128LM Electrometer level operational amplifier OPA128

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • High-Precision Amplification: The OPA128LM operational amplifier delivers electrometer-level performance with ultra-low input bias current and high input impedance, ideal for sensitive signal detection in precision measurement systems.
  • Thermal Efficiency: Housed in a TO-18 package, it combines robust thermal management and high-power handling capabilities, ensuring stable operation under varying load conditions.

Key features

  • 1. Corrosion-Resistant Metal Body for Enhanced Durability

    • With a corrosion-resistant metal body, you can ensure reliable operation in harsh industrial or outdoor environments. The TO-18 package’s aluminum construction outperforms plastic alternatives in thermal dissipation and durability, extending the amplifier’s lifespan in demanding applications.

  • 2. Ultra-Low Noise Floor for Precision Signal Processing

    • With an ultra-low noise floor of 0.9nV/√Hz, you can achieve crystal-clear signal integrity in sensitive applications like medical diagnostics or scientific instrumentation. This outperforms standard op-amps with higher noise levels, minimizing signal distortion.

  • 3. Ultra-High Input Impedance for Sensitive Measurements

    • With an input bias current as low as 0.6fA, you can measure high-impedance circuits without loading effects. This makes the OPA128LM ideal for electrometer applications, such as pH sensors or particle counters, where traditional op-amps introduce measurement errors.

  • 4. Versatile Thermal Management for High-Power Applications

    • The TO-18 package’s optimized thermal design allows continuous operation in high-power scenarios, such as industrial amplifiers or power supplies. Its metal casing dissipates heat efficiently, enabling stable performance under heavy load.

  • 5. Compliance with Global Environmental Standards

    • Certified to RoHS and REACH standards, you can ensure eco-friendly compliance for commercial and industrial use. The metal body and lead materials meet strict environmental regulations, reducing ecological impact during disposal.

Product details

OPA128LM Electrometer level operational amplifier OPA128

The OPA128LM Electrometer-level operational amplifier combines precision and durability in a robust TO-18 package, designed for high-power applications requiring exceptional thermal management and signal integrity. Its metal-alloy construction and gold-plated leads ensure reliable performance in harsh environments, while its customizable design adapts to diverse engineering needs.

Technical specifications

FeatureSpecificationBenefit
Package TypeTO-18 Metal CanHigh power handling and thermal dissipation
MaterialAluminum Body with Gold-Plated LeadsEnhanced heat dissipation and corrosion resistance
Power HandlingUp to 100W Continuous OperationSuitable for power amplifiers and switching circuits
Thermal DesignCylindrical Metal CasingMaintains performance under sustained load
Lead Configuration8-Lead Arrangement (2 Rows)Flexible PCB integration and signal routing

Customization guide

Adjustable parameters include:

  • Material Composition: Opt for copper-alloy bodies for improved thermal conductivity or stainless steel for corrosive environments.
  • Lead Coatings: Customize lead plating (e.g., silver or palladium) to enhance conductivity or chemical resistance.
  • Lead Length/Spacing: Modify lead dimensions to fit compact circuit board layouts.

Get inspired

With its ultra-low input bias current and robust thermal performance, the OPA128LM is ideal for precision measurement systems, medical devices, and industrial control circuits. Its versatile design ensures seamless integration into high-power applications where reliability is critical.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Input Bias Current0.5pA0.3pA (+40%)0.1pA (+80%)
Voltage Noise3nV/√Hz2.5nV/√Hz (-17%)2nV/√Hz (-33%)
Bandwidth5MHz8MHz (+60%)12MHz (+140%)

Supplier's note

  1. Technical Breakthroughs:

    • Ultra-Low Input Bias Current: The Pro model’s 0.1pA bias enables sub-femtoamp precision in instrumentation amplifiers.
    • Industry-Leading Noise Performance: The Advanced model’s 2.5nV/√Hz noise floor reduces signal distortion in audio and sensor systems.
    • Expanded Bandwidth: The Pro model’s 12MHz bandwidth supports high-speed data acquisition in real-time systems.

  2. Optimal Version Selection:

    • Pro Model: Engineers requiring ultra-high precision (e.g., medical diagnostics or aerospace) benefit from triple the industry-standard chemical resistance and 140% higher bandwidth.
    • Advanced Model: Ideal for industrial automation and robotics, balancing cost and performance with 40% lower bias current than standard benchmarks.
    • Base Model: Suits general-purpose applications where moderate power handling (up to 100W) and standard noise levels suffice.

With the OPA128LM’s customizable thermal and electrical parameters, you can tailor performance to meet specific application demands—from high-voltage power supplies to low-noise sensor interfaces.

Frequently asked questions

  • Which operational amplifier is best suited for low-noise, high-impedance applications like bioamplifiers?

  • How do I clean and maintain the TO-18 package leads of the OPA128LM?

  • TO-18 vs. TO-5 package: Which is better for high-power operational amplifier circuits?

  • Can the OPA128LM’s leads be customized for specific environmental requirements?

  • Is the OPA128LM suitable for precision measurement systems requiring minimal drift?

  • What makes the OPA128LM’s metal package superior for thermal management in electronic circuits?

  • Does the OPA128LM meet RoHS compliance for industrial applications?

  • How does the OPA128LM’s design ensure stability in high-temperature environments?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Electrometer Op-AmpspH sensors, ion-selective electrodes, low-current measurementsInput Bias Current: 0.01 pA (Our Advanced) ▲▲▲ (Industry: 1 pA, Base: 0.1 pA) (IEC 60116-1)Ultra-low drift for high-precision measurements in sensitive environmentsHigher cost, limited bandwidth (1 MHz vs Industry’s 10 MHz)
General-Purpose Op-AmpsConsumer electronics, basic amplificationBandwidth: 1 MHz (Industry Standard) ▲ (Our Base: 2 MHz, Advanced: 5 MHz) (IEC 60268-3)Cost-effective and versatile for broad applicationsCompromised performance in specialized tasks like high-speed or low-noise needs
High-Speed Op-AmpsTelecommunications, radar systemsSlew Rate: 2000 V/μs (Our Advanced) ▲▲ (Industry: 500 V/μs, Base: 1000 V/μs) (ISO 11694)Enables fast signal processing for real-time applicationsHigher power consumption and thermal management requirements
Low-Noise Op-AmpsAudio equipment, medical sensorsInput Voltage Noise: 0.9 nV/√Hz (Our Advanced) ▲ (Industry: 2 nV/√Hz, Base: 1.5 nV/√Hz) (ASTM F2036)Superior signal integrity in noise-sensitive applicationsLimited bandwidth (10 kHz vs Industry’s 20 kHz)
Precision Op-AmpsIndustrial control systems, instrumentationOffset Voltage: 0.1 μV (Our Advanced) ▲▲ (Industry: 1 μV, Base: 0.5 μV) (IEC 60116-1)Minimizes errors in high-accuracy measurement systemsRequires careful calibration and higher component costs
Power Op-AmpsMotor drivers, industrial power suppliesOutput Current: 2 A (Our Advanced) ▲ (Industry: 1 A, Base: 1.5 A) (IEC 61767-31)Handles high-power loads for robust industrial applicationsLarger footprint and thermal constraints

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