AD822AR Equivalent & Substitute Parts

Part Overview

The AD822AR is a general-purpose operational amplifier manufactured by Analog Devices Inc., featuring dual circuits in an 8-SOIC surface-mount package. This device delivers rail-to-rail output capability with a 1.9 MHz gain-bandwidth product and operates across a 5V to 30V supply range. The AD822AR is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility while meeting current manufacturing and compliance standards.

Substiute Parts

AD822AR

Analog Devices Inc.In Stock: 7966AD822AR Datasheet

Current PartRFQ

AD822ARZ

Analog Devices Inc.In Stock: 11439AD822ARZ Datasheet

DirectRFQ

ADA4622-2ARZ

Analog Devices Inc.In Stock: 50318ADA4622-2ARZ Datasheet

SimilarRFQ

LT1638HS8

Analog Devices Inc.In Stock: 6197LT1638HS8 Datasheet

SimilarRFQ

LT1638IS8

Analog Devices Inc.In Stock: 7910LT1638IS8 Datasheet

SimilarRFQ

LT1638IS8#TR

Analog Devices Inc.In Stock: 961LT1638IS8#TR Datasheet

SimilarRFQ

AD822BRZ

Analog Devices Inc.In Stock: 7795AD822BRZ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AD822AR are classified into two categories based on electrical and mechanical compatibility:

Direct Equivalent (Identical Electrical Performance): The AD822ARZ maintains all electrical specifications of the AD822AR, including slew rate, gain-bandwidth product, input bias current, and supply voltage range. This part differs only in packaging format (Tube vs. unspecified) and product status (Active vs. Obsolete). The AD822BRZ provides parametric equivalence with a minor variance in input offset voltage (300 µV vs. 400 µV), remaining within acceptable tolerance for general-purpose applications.

Similar Substitutes (Functional Compatibility with Performance Variations): The LT1638HS8, LT1638IS8, and LT1638IS8#TR are general-purpose amplifiers with identical dual-circuit configuration and rail-to-rail output in 8-SOIC packaging. These parts operate across an extended supply voltage range (2.5V to 44V) and support higher operating temperatures (up to 125°C). Trade-offs include reduced slew rate (0.4 V/µs vs. 3 V/µs) and lower gain-bandwidth product (1.2 MHz vs. 1.9 MHz), with significantly lower supply current consumption (205 µA vs. 1.24 mA).

The ADA4622-2ARZ represents a performance-enhanced alternative with J-FET input architecture, delivering superior slew rate (23 V/µs), higher gain-bandwidth product (8 MHz), and lower input offset voltage (40 µV). This part maintains dual-circuit configuration and 8-SOIC packaging but operates at higher supply current and extended temperature range (-40°C to 125°C).

Substitution eligibility is determined by matching: number of circuits (2), output type (rail-to-rail), package type (8-SOIC), mounting method (surface mount), and supply voltage compatibility within the application's operating range.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: AD822ARZ

The AD822ARZ is the direct equivalent replacement for the AD822AR. This part maintains identical electrical specifications across all critical parameters: slew rate (3 V/µs), gain-bandwidth product (1.9 MHz), input bias current (2 pA), and supply voltage range (5V to 30V). The AD822ARZ carries Active product status with ROHS3 compliance and REACH unaffected certification, ensuring long-term availability and regulatory compliance for new production. Inventory availability (11,380 units) supports immediate deployment.

Secondary Recommendation: AD822BRZ

The AD822BRZ provides parametric equivalence with a minor input offset voltage specification of 300 µV compared to 400 µV in the AD822AR. All other electrical parameters remain identical. This part is Active with ROHS3 compliance and suitable for applications where the tighter offset voltage specification provides design margin. Inventory availability (7,754 units) is adequate for production requirements.

Alternative for Extended Temperature Range: ADA4622-2ARZ

The ADA4622-2ARZ is suitable for applications requiring extended operating temperature range (-40°C to 125°C) and superior dynamic performance. This J-FET input amplifier delivers significantly higher slew rate (23 V/µs) and gain-bandwidth product (8 MHz), with substantially lower input offset voltage (40 µV). The trade-off is increased supply current consumption (665 µA vs. 1.24 mA). This part is Active with ROHS3 compliance. Selection is appropriate only when the enhanced performance specifications justify the increased power dissipation.

Alternative for Low-Power Applications: LT1638HS8, LT1638IS8, LT1638IS8#TR

The LT1638 series (HS8, IS8, IS8#TR variants) provides general-purpose dual-amplifier functionality with significantly reduced supply current consumption (205 µA vs. 1.24 mA) and extended supply voltage range (2.5V to 44V). These parts are suitable for battery-powered and low-power applications. Trade-offs include reduced slew rate (0.4 V/µs) and lower gain-bandwidth product (1.2 MHz). All variants are Active with ROHS3 compliance. The LT1638IS8 and LT1638IS8#TR support the AD822AR operating temperature range (-40°C to 85°C), while LT1638HS8 extends to 125°C.

Frequently Asked Questions (FAQ)

Q: Can the AD822ARZ be used as a direct replacement for the AD822AR?

A: Yes. The AD822ARZ is electrically and mechanically identical to the AD822AR. Both parts feature identical slew rate (3 V/µs), gain-bandwidth product (1.9 MHz), input bias current (2 pA), and supply voltage specifications (5V to 30V). The primary difference is product status: AD822ARZ is Active while AD822AR is Obsolete. The AD822ARZ is the recommended replacement for new designs and production.

Q: What is the difference between AD822ARZ and AD822BRZ?

A: Both parts are electrically equivalent with one exception: input offset voltage. The AD822ARZ specifies 400 µV input offset voltage, while the AD822BRZ specifies 300 µV. All other parameters—slew rate, gain-bandwidth product, supply current, and operating temperature—are identical. The AD822BRZ is suitable when tighter offset voltage tolerance is required.

Q: Can I use the ADA4622-2ARZ as a substitute for the AD822AR?

A: The ADA4622-2ARZ is functionally compatible but not a direct equivalent. Both are dual-channel, rail-to-rail amplifiers in 8-SOIC packaging. The ADA4622-2ARZ offers superior performance: higher slew rate (23 V/µs vs. 3 V/µs), higher gain-bandwidth product (8 MHz vs. 1.9 MHz), and lower input offset voltage (40 µV vs. 400 µV). However, it consumes more supply current (665 µA vs. 1.24 mA) and uses J-FET input architecture instead of general-purpose design. Substitution is appropriate only when the enhanced specifications are required.

Q: Are the LT1638 series parts suitable replacements for the AD822AR?

A: The LT1638 series (LT1638HS8, LT1638IS8, LT1638IS8#TR) provides functional compatibility as dual-channel, rail-to-rail amplifiers in 8-SOIC packaging. However, they are not direct equivalents. The LT1638 series offers significantly lower supply current consumption (205 µA vs. 1.24 mA) and extended supply voltage range (2.5V to 44V), making them suitable for low-power applications. Trade-offs include reduced slew rate (0.4 V/µs vs. 3 V/µs) and lower gain-bandwidth product (1.2 MHz vs. 1.9 MHz). Substitution is appropriate only when power consumption reduction is a design priority and the reduced bandwidth is acceptable.

Q: What is the difference between LT1638IS8 and LT1638IS8#TR?

A: Both parts are electrically identical with the same specifications: slew rate (0.4 V/µs), gain-bandwidth product (1.2 MHz), input bias current (20 nA), and operating temperature range (-40°C to 85°C). The difference is packaging designation: LT1638IS8#TR indicates tape-reel packaging format, while LT1638IS8 indicates standard packaging. Both are Active with ROHS3 compliance. Selection depends on assembly process requirements.

Q: Can I use LT1638HS8 in place of LT1638IS8?

A: Both parts are electrically similar with identical slew rate (0.4 V/µs), gain-bandwidth product (1.2 MHz), and supply voltage range (2.5V to 44V). The primary difference is input bias current: LT1638HS8 specifies 250 nA while LT1638IS8 specifies 20 nA. Additionally, LT1638HS8 supports extended operating temperature (-40°C to 125°C) compared to LT1638IS8 (-40°C to 85°C). Substitution is appropriate when the higher input bias current of the HS8 variant is acceptable and extended temperature operation is beneficial.

Q: Are all substitute parts available in the same 8-SOIC package?

A: Yes. All substitute parts listed—AD822ARZ, AD822BRZ, ADA4622-2ARZ, LT1638HS8, LT1638IS8, and LT1638IS8#TR—are available in 8-SOIC (0.154", 3.90mm Width) surface-mount packaging. This ensures mechanical and PCB layout compatibility with the original AD822AR design.

Q: Do all substitute parts meet RoHS and REACH compliance?

A: All Active substitute parts (AD822ARZ, AD822BRZ, ADA4622-2ARZ, LT1638HS8, LT1638IS8, LT1638IS8#TR) are ROHS3 compliant and REACH unaffected. The original AD822AR does not specify RoHS status due to its Obsolete classification. For new designs and production, all recommended substitutes meet current regulatory requirements.

Q: What is the moisture sensitivity level for these parts?

A: All parts listed—the original AD822AR and all substitute parts—carry Moisture Sensitivity Level (MSL) 1 (Unlimited). This indicates the lowest moisture sensitivity classification, requiring no special moisture control during storage, handling, or assembly.