ADA4091-2ACPZ-R2 Equivalent & Substitute Parts

Part Overview

The ADA4091-2ACPZ-R2 is a general-purpose operational amplifier manufactured by Analog Devices Inc., featuring dual circuits in a rail-to-rail configuration. This device is packaged in an 8-LFCSP-WD (3x3) surface-mount package and is designed for applications requiring low-power, dual-channel amplification across a wide supply voltage range of 3V to 30V.

The ADA4091-2ACPZ-R2 is currently discontinued at DiGi Electronics. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for ongoing production, maintenance, and new designs requiring compatible operational amplifier functionality.

Substiute Parts

ADA4091-2ACPZ-R2

Analog Devices Inc.In Stock: 1676ADA4091-2ACPZ-R2 Datasheet

Current PartRFQ

LT6020HDD#PBF

Analog Devices Inc.In Stock: 922LT6020HDD#PBF Datasheet

SimilarRFQ

LT6020IDD#PBF

Analog Devices Inc.In Stock: 2143LT6020IDD#PBF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ADA4091-2ACPZ-R2 is determined by the following critical parameters:

Functional Equivalence Requirements:

• Amplifier Type: General Purpose
• Number of Circuits: 2
• Output Type: Rail-to-Rail
• Voltage Supply Range: 3V to 30V minimum
• Operating Temperature: -40°C to 125°C minimum
• Mounting Type: Surface Mount
• Package Compatibility: 8-pin DFN/LFCSP footprint

The substitute parts identified (LT6020HDD#PBF and LT6020IDD#PBF) meet these core functional and electrical requirements. Both are dual-channel, rail-to-rail operational amplifiers from Analog Devices Inc. with compatible supply voltage ranges and surface-mount packaging. The LT6020 series parts are currently in active production status, ensuring long-term availability.

Parameter Comparison

Engineering Selection Recommendations

LT6020HDD#PBF Selection Criteria:

The LT6020HDD#PBF is suitable for applications where the full operating temperature range of -40°C to 125°C is required. This part maintains active product status with ROHS3 compliance and unlimited moisture sensitivity rating, providing superior reliability for long-term storage and field deployment. The LT6020HDD#PBF is packaged in Tube format and is currently in stock with 885 units available.

LT6020IDD#PBF Selection Criteria:

The LT6020IDD#PBF is suitable for applications with operating temperature requirements limited to -40°C to 85°C. This part also maintains active product status with ROHS3 compliance and unlimited moisture sensitivity rating. The LT6020IDD#PBF is packaged in Tube format and is currently in stock with 2100 units available, offering the highest inventory availability among substitute options.

Substitution Considerations:

Both LT6020 variants provide improved performance characteristics compared to the ADA4091-2ACPZ-R2, including higher slew rate (5V/µs versus 0.46V/µs), lower input offset voltage (20µV versus 35µV), and significantly lower supply current (90µA versus 200µA). The LT6020 series parts feature superior moisture sensitivity ratings (MSL 1 versus MSL 3), reducing handling and storage constraints.

The primary trade-off is reduced gain bandwidth product (400kHz versus 1.27MHz) and lower output current per channel (11mA versus 20mA). Applications requiring the higher bandwidth or output current specifications of the ADA4091-2ACPZ-R2 require detailed circuit analysis to confirm LT6020 compatibility.

Frequently Asked Questions (FAQ)

Q: Can the LT6020HDD#PBF and LT6020IDD#PBF be used interchangeably with the ADA4091-2ACPZ-R2?

A: Both LT6020 variants are functionally equivalent for general-purpose dual-channel amplification across the 3V to 30V supply range. The primary difference between the two LT6020 options is the maximum operating temperature: LT6020HDD#PBF supports -40°C to 125°C, while LT6020IDD#PBF supports -40°C to 85°C. Select based on your application's temperature requirements.

Q: What are the key performance differences between the ADA4091-2ACPZ-R2 and LT6020 substitutes?

A: The LT6020 series offers superior slew rate (5V/µs versus 0.46V/µs), lower input offset voltage (20µV versus 35µV), and significantly reduced supply current (90µA versus 200µA). However, the LT6020 has lower gain bandwidth product (400kHz versus 1.27MHz) and reduced output current per channel (11mA versus 20mA). Verify these differences against your circuit requirements before substitution.

Q: Are there package compatibility concerns when substituting the ADA4091-2ACPZ-R2?

A: Both substitute parts use 8-pin DFN packages (8-DFN 3x3) with exposed pads, which are footprint-compatible with the original 8-LFCSP-WD (3x3) package. No PCB redesign is required for package substitution. Verify pinout compatibility in the respective device datasheets.

Q: What is the moisture sensitivity difference between the ADA4091-2ACPZ-R2 and LT6020 parts?

A: The ADA4091-2ACPZ-R2 has MSL 3 rating (168-hour floor life), requiring controlled storage and handling. Both LT6020 variants have MSL 1 rating (unlimited floor life), eliminating moisture sensitivity constraints and reducing handling complexity during manufacturing and field deployment.

Q: Which LT6020 variant should I select for new designs?

A: For new designs, select based on your application's maximum operating temperature requirement. If your circuit operates at temperatures above 85°C, use LT6020HDD#PBF. If your maximum operating temperature is 85°C or below, either variant is acceptable; LT6020IDD#PBF offers higher inventory availability (2100 units versus 885 units).

Q: Are the LT6020 parts RoHS compliant?

A: Yes, both LT6020HDD#PBF and LT6020IDD#PBF are ROHS3 compliant. The ADA4091-2ACPZ-R2 RoHS status is not specified in the provided documentation.