OPA2186DR Equivalent & Substitute Parts

Part Overview

The OPA2186DR is a zero-drift operational amplifier manufactured by Texas Instruments, featuring rail-to-rail input and output capabilities in a dual-channel configuration. This device is classified as a Linear Amplifier and is currently in Active product status. The OPA2186DR is packaged in an 8-SOIC surface mount package and is RoHS3 compliant with REACH Unaffected status.

Substitute parts are identified when alternative components meet the functional requirements of applications utilizing the OPA2186DR, particularly in scenarios involving component availability, supply chain considerations, or design flexibility within specified electrical and mechanical parameters.

Substiute Parts

OPA2186DR

Texas InstrumentsIn Stock: 2711OPA2186DR Datasheet

Current PartRFQ

ADA4311-1ARHZ

Analog Devices Inc.In Stock: 7565ADA4311-1ARHZ Datasheet

SimilarRFQ

ADA4311-1ARHZ-R7

Analog Devices Inc.In Stock: 33054ADA4311-1ARHZ-R7 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the OPA2186DR are identified based on the following substitution criteria:

Primary Substitution Parameters:

• Number of Circuits: 2 channels
• Mounting Type: Surface Mount
• RoHS3 Compliance: Required
• Product Status: Active
• Category: Linear, Amplifiers

Secondary Compatibility Factors:

• Operating Temperature Range: Minimum -40°C capability
• Supply Voltage Compatibility: Overlap within specified ranges
• Regulatory Compliance: REACH Unaffected status

The substitute parts listed (ADA4311-1ARHZ and ADA4311-1ARHZ-R7) share the dual-channel configuration and surface mount technology with the OPA2186DR. Both substitute parts maintain Active product status and RoHS3 compliance. However, these substitutes employ Current Feedback amplifier topology rather than Zero-Drift topology, resulting in significant differences in electrical performance characteristics including slew rate, bandwidth, and input offset voltage specifications.

Parameter Comparison

Engineering Selection Recommendations

OPA2186DR Primary Selection: The OPA2186DR remains the primary component choice for applications requiring zero-drift amplifier topology with rail-to-rail input and output characteristics. This device is Active in product status, RoHS3 compliant, and REACH Unaffected. The OPA2186DR supports extended operating temperature range to 125°C and accommodates supply voltages up to 24V.

ADA4311-1ARHZ and ADA4311-1ARHZ-R7 Substitution Considerations: Both ADA4311 variants are Active products with RoHS3 compliance and REACH Unaffected status. These Current Feedback amplifiers provide significantly higher slew rate (1050V/µs versus 0.35V/µs) and lower input offset voltage (1µV versus 450µV). However, substitution requires verification of circuit topology compatibility, as Current Feedback amplifiers operate on fundamentally different principles than Zero-Drift amplifiers. The ADA4311 variants operate at reduced maximum supply voltage (12V maximum versus 24V maximum) and reduced maximum operating temperature (85°C versus 125°C). Package differences exist: OPA2186DR uses 8-SOIC while ADA4311 variants use 10-MSOP-EP, requiring PCB layout modifications.

Packaging Distinction: ADA4311-1ARHZ is supplied in Tube packaging, while ADA4311-1ARHZ-R7 is supplied in Tape & Reel (TR) packaging. Selection between these variants depends on procurement and assembly requirements.

Frequently Asked Questions (FAQ)

Q: Can the ADA4311-1ARHZ directly replace the OPA2186DR in existing designs?

A: Direct replacement is not recommended without circuit redesign. While both devices are dual-channel surface mount amplifiers with Active product status and RoHS3 compliance, the ADA4311 employs Current Feedback topology versus the OPA2186DR's Zero-Drift topology. These topologies have different frequency response characteristics, input impedance properties, and feedback network requirements. Additionally, package differences (8-SOIC versus 10-MSOP-EP) require PCB layout modifications.

Q: What are the key electrical differences between the OPA2186DR and ADA4311 variants?

A: The OPA2186DR provides 450µV input offset voltage and 0.35V/µs slew rate with 750kHz gain bandwidth product. The ADA4311 variants provide 1µV input offset voltage and 1050V/µs slew rate with 310MHz bandwidth. The OPA2186DR supports supply voltages from 4.5V to 24V, while ADA4311 variants support 6V to 12V. The OPA2186DR operates to 125°C maximum temperature; ADA4311 variants operate to 85°C maximum.

Q: Are there packaging compatibility issues when substituting these parts?

A: Yes. The OPA2186DR uses an 8-SOIC package (0.154" width, 3.90mm), while both ADA4311 variants use a 10-MSOP-EP package (0.118" width, 3.00mm). These packages have different pin counts, pin spacing, and footprints. PCB redesign is required for physical substitution.

Q: What is the difference between ADA4311-1ARHZ and ADA4311-1ARHZ-R7?

A: Both parts are electrically identical Current Feedback amplifiers with identical electrical specifications. The primary difference is packaging format: ADA4311-1ARHZ is supplied in Tube packaging, while ADA4311-1ARHZ-R7 is supplied in Tape & Reel (TR) packaging. Selection depends on assembly process requirements and procurement preferences.

Q: Do all three parts meet RoHS3 compliance requirements?

A: Yes. The OPA2186DR, ADA4311-1ARHZ, and ADA4311-1ARHZ-R7 are all RoHS3 compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: What is the operating temperature limitation when considering substitution?

A: The OPA2186DR operates from -40°C to 125°C. Both ADA4311 variants operate from -40°C to 85°C. Applications requiring operation above 85°C cannot use ADA4311 substitutes. The OPA2186DR provides 40°C additional maximum operating temperature capability.

Q: Can the OPA2186DR be used in applications designed for the ADA4311?

A: Application-specific evaluation is required. While the OPA2186DR provides superior input offset voltage (450µV versus 1µV) and extended temperature range, it has significantly lower slew rate (0.35V/µs versus 1050V/µs) and lower bandwidth (750kHz versus 310MHz). Applications requiring high-speed signal processing or high slew rate performance may not be suitable for OPA2186DR substitution.