AD8422BRZ Equivalent & Substitute Parts

Part Overview

The AD8422BRZ is an instrumentation amplifier manufactured by Analog Devices Inc., designed for single-circuit rail-to-rail signal conditioning applications. This linear amplifier operates across a wide supply voltage range of 4.6 V to 36 V and is housed in an 8-SOIC surface mount package. The device is actively produced and maintains full RoHS3 compliance with unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when the primary part becomes unavailable, when alternative packaging formats are required, or when design specifications permit operation within the electrical parameter tolerances of equivalent devices.

Substiute Parts

AD8422BRZ

Analog Devices Inc.In Stock: 3617AD8422BRZ Datasheet

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INA826AID

Texas InstrumentsIn Stock: 10470INA826AID Datasheet

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INA826AIDR

Texas InstrumentsIn Stock: 45120INA826AIDR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the AD8422BRZ is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Amplifier type: Instrumentation
• Number of circuits: 1
• Output configuration: Rail-to-Rail
• Package format: 8-SOIC with 0.154" (3.90mm) width
• Mounting method: Surface Mount
• Supply voltage range compatibility: Minimum 4.6 V to maximum 36 V
• Operating temperature range: Minimum -40°C to maximum 85°C
• RoHS3 compliance status

The INA826AID and INA826AIDR devices from Texas Instruments meet all primary substitution criteria. Both parts operate as single-circuit instrumentation amplifiers with rail-to-rail output in identical 8-SOIC packages. The INA826AIDR variant is supplied in Cut Tape and Digi-Reel packaging, while the INA826AID is supplied in Tube packaging. Both devices support the full 4.6 V to 36 V supply range required by the AD8422BRZ application envelope and maintain RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

AD8422BRZ (Primary Part): Select this part when Analog Devices supply chain availability is confirmed and the specified electrical performance parameters are required. The AD8422BRZ offers higher bandwidth (2.2 MHz) and higher output current capability (20 mA per channel) compared to substitute options. The unlimited moisture sensitivity rating (MSL 1) provides extended shelf life without time-dependent storage constraints.

INA826AID (Tube Packaging Substitute): This Texas Instruments device provides functional equivalence in tube packaging format. Select when tube packaging is required for automated assembly processes or when existing supply agreements specify Texas Instruments components. The INA826AID operates across the full 4.6 V to 36 V supply range and maintains RoHS3 compliance. The extended operating temperature range (-40°C to 125°C) accommodates applications requiring operation above 85°C.

INA826AIDR (Cut Tape / Digi-Reel Substitute): This variant is identical to the INA826AID in electrical specifications but is supplied in Cut Tape and Digi-Reel packaging. Select this option when reel-based component handling and automated pick-and-place assembly are required. The INA826AIDR maintains all functional equivalence criteria and compliance certifications.

Compliance and Regulatory Status: All three parts maintain ROHS3 compliance, REACH unaffected status, and identical ECCN (EAR99) and HTSUS (8542.33.0001) classifications. Selection between parts does not introduce regulatory or compliance complications.

Frequently Asked Questions (FAQ)

Q: Can the INA826AID or INA826AIDR be used as direct replacements for the AD8422BRZ in existing PCB designs?

A: Yes. Both INA826 variants are pin-compatible and functionally equivalent within the specified electrical parameter tolerances. The identical 8-SOIC package footprint (0.154" width, 3.90mm) permits direct PCB substitution without layout modifications. Electrical performance differences are documented in the parameter comparison table and must be evaluated against specific application requirements.

Q: What are the key electrical differences between the AD8422BRZ and INA826 devices?

A: The AD8422BRZ provides higher bandwidth (2.2 MHz versus 1 MHz) and higher output current per channel (20 mA versus 16 mA). The INA826 devices feature lower input bias current (35 nA versus 200 pA) and lower supply current consumption (200 µA versus 300 µA). The INA826 devices support operation at lower minimum supply voltages (2.7 V versus 4.6 V) and higher maximum operating temperatures (125°C versus 85°C).

Q: What is the difference between INA826AID and INA826AIDR packaging?

A: Both devices are electrically and functionally identical. The INA826AID is supplied in Tube packaging, while the INA826AIDR is supplied in Cut Tape and Digi-Reel packaging. Packaging selection depends on assembly process requirements and component handling methods. Tube packaging is suitable for manual assembly and lower-volume production, while Cut Tape and Digi-Reel formats are optimized for automated pick-and-place assembly systems.

Q: Are there moisture sensitivity or storage life considerations when substituting parts?

A: The AD8422BRZ carries MSL 1 (Unlimited) rating, permitting indefinite shelf storage without time-dependent constraints. Both INA826 variants carry MSL 2 (1 Year) rating, requiring component use within one year of manufacture under controlled humidity conditions. Storage environment and shelf life requirements must be evaluated when selecting between the primary part and substitutes.

Q: Do all three parts maintain the same regulatory and compliance status?

A: Yes. The AD8422BRZ, INA826AID, and INA826AIDR all maintain ROHS3 compliance, REACH unaffected status, and identical ECCN (EAR99) and HTSUS (8542.33.0001) classifications. Substitution does not introduce regulatory complications or require compliance re-evaluation.

Q: What supply voltage range is supported by all three parts?

A: The AD8422BRZ operates from 4.6 V to 36 V. The INA826AID and INA826AIDR operate from 2.7 V to 36 V. All three parts support the 4.6 V to 36 V range, ensuring compatibility in applications designed for the AD8422BRZ supply envelope. The INA826 devices provide additional flexibility for lower-voltage applications below 4.6 V.