ADA4622-2ARMZ-RL Equivalent & Substitute Parts

Part Overview

The ADA4622-2ARMZ-RL is a dual-channel J-FET operational amplifier manufactured by Analog Devices Inc., housed in an 8-MSOP surface mount package. This linear amplifier features rail-to-rail output capability and is designed for applications requiring low input bias current and low input offset voltage. The part is currently in active production status with 4,600 units available in inventory. Substitute parts are identified when packaging format changes, manufacturer transitions, or supply chain requirements necessitate alternative component selection while maintaining functional equivalence within specified electrical parameters.

Substiute Parts

ADA4622-2ARMZ-RL

Analog Devices Inc.In Stock: 4641ADA4622-2ARMZ-RL Datasheet

Current PartRFQ

ADA4622-2ARMZ-R7

Analog Devices Inc.In Stock: 2753ADA4622-2ARMZ-R7 Datasheet

Parametric EquivalentRFQ

OPA2172IDGK

Texas InstrumentsIn Stock: 860454OPA2172IDGK Datasheet

SimilarRFQ

OPA2172QDGKQ1

Texas InstrumentsIn Stock: 754OPA2172QDGKQ1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ADA4622-2ARMZ-RL are classified into two categories based on substitution criteria:

Parametric Equivalent (Same Manufacturer, Different Packaging): The ADA4622-2ARMZ-R7 is a parametric equivalent manufactured by Analog Devices Inc. This substitute maintains identical electrical specifications across all critical parameters: J-FET amplifier type, dual-channel configuration, rail-to-rail output, 23 V/µs slew rate, 8 MHz gain bandwidth product, 2 pA input bias current, 40 µV input offset voltage, and identical supply voltage range (5 V to 30 V). The primary difference is packaging format: ADA4622-2ARMZ-R7 is supplied in Cut Tape (CT) & Digi-Reel® format versus Tape & Reel (TR) for the main part. Both use the 8-MSOP package footprint. This substitute is appropriate for applications where packaging format flexibility is acceptable.

Similar Manufacturer Parts (Different Amplifier Type, Expanded Capabilities): The OPA2172IDGK and OPA2172QDGKQ1 are general-purpose amplifiers manufactured by Texas Instruments. These parts differ from the ADA4622-2ARMZ-RL in amplifier type (general purpose versus J-FET), resulting in different electrical characteristics. Key parameter differences include: lower slew rate (10 V/µs versus 23 V/µs), higher input bias current (8 pA versus 2 pA), higher input offset voltage (200 µV versus 40 µV), and higher supply current (1.6 mA versus 665 µA per dual channels). However, both OPA2172 variants maintain dual-channel configuration, rail-to-rail output, compatible operating temperature range (-40°C to 125°C), and expanded supply voltage range (4.5 V to 36 V). The OPA2172QDGKQ1 includes automotive-grade qualification (AEC-Q100). These substitutes are applicable only when the application tolerates the specified parameter deviations and does not require J-FET input characteristics.

Parameter Comparison

Engineering Selection Recommendations

ADA4622-2ARMZ-R7 Selection Criteria: The ADA4622-2ARMZ-R7 is selected when the application requires identical electrical performance to the ADA4622-2ARMZ-RL and packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) is compatible with procurement and assembly processes. Both parts maintain ROHS3 compliance, MSL 1 rating, and active product status. This substitute provides direct functional replacement with no circuit redesign required.

OPA2172IDGK Selection Criteria: The OPA2172IDGK is selected when the application tolerates general-purpose amplifier characteristics in place of J-FET input stage performance. This substitute is appropriate for applications where the lower slew rate (10 V/µs), higher input bias current (8 pA), and higher input offset voltage (200 µV) do not compromise system performance. The OPA2172IDGK offers expanded supply voltage range (4.5 V to 36 V) and higher output current capability (75 mA per channel). ROHS3 compliance and active product status are maintained. MSL rating is 2 (1 Year), requiring appropriate moisture control during storage and handling.

OPA2172QDGKQ1 Selection Criteria: The OPA2172QDGKQ1 is selected for automotive applications requiring AEC-Q100 qualification. This part maintains all electrical characteristics of the OPA2172IDGK while meeting automotive-grade standards. Selection is appropriate when the application operates within automotive temperature and reliability requirements and tolerates the specified parameter deviations from the ADA4622-2ARMZ-RL. MSL rating is 2 (1 Year).

Frequently Asked Questions (FAQ)

Q: Can the ADA4622-2ARMZ-R7 be used as a direct replacement for the ADA4622-2ARMZ-RL?

A: Yes. The ADA4622-2ARMZ-R7 is a parametric equivalent with identical electrical specifications. The only difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel). Both parts use the 8-MSOP package footprint and are compatible with the same PCB layout. Verify that your procurement and assembly processes accommodate the different packaging format.

Q: What are the key differences between the ADA4622-2ARMZ-RL and the OPA2172 series?

A: The primary differences are amplifier type and resulting electrical characteristics. The ADA4622-2ARMZ-RL uses a J-FET input stage, providing 2 pA input bias current and 40 µV input offset voltage. The OPA2172 series uses general-purpose architecture, resulting in 8 pA input bias current and 200 µV input offset voltage. The ADA4622-2ARMZ-RL also provides higher slew rate (23 V/µs versus 10 V/µs). The OPA2172 series offers higher output current (75 mA versus 20 mA per channel) and expanded supply voltage range (4.5 V to 36 V versus 5 V to 30 V).

Q: Are the OPA2172IDGK and OPA2172QDGKQ1 electrically identical?

A: Yes. Both parts have identical electrical specifications. The OPA2172QDGKQ1 includes automotive-grade qualification (AEC-Q100) and is designated for automotive applications. Select the OPA2172QDGKQ1 when automotive qualification is required; otherwise, the OPA2172IDGK is functionally equivalent.

Q: What is the impact of the different package types (8-MSOP versus 8-VSSOP)?

A: The 8-MSOP and 8-VSSOP are both 8-pin surface mount packages with 0.118" (3.00mm) width. Pin configurations and PCB footprints differ between these package types. Verify PCB layout compatibility before substituting between ADA4622 (8-MSOP) and OPA2172 (8-VSSOP) parts. Physical package dimensions and thermal characteristics may also differ.

Q: Can I use an OPA2172 part in a circuit designed for the ADA4622-2ARMZ-RL without circuit modifications?

A: Circuit modifications may be required. While both parts are dual-channel, rail-to-rail operational amplifiers with compatible operating temperature ranges, the OPA2172 series has different electrical characteristics (lower slew rate, higher input bias current, higher input offset voltage, higher supply current). Evaluate circuit performance against the OPA2172 specifications. Additionally, the different package type (8-VSSOP versus 8-MSOP) requires PCB layout changes.

Q: What is the moisture sensitivity level (MSL) difference, and why does it matter?

A: The ADA4622-2ARMZ-RL and ADA4622-2ARMZ-R7 have MSL 1 (Unlimited), meaning no moisture sensitivity restrictions. The OPA2172 series has MSL 2 (1 Year), requiring that parts be stored in controlled humidity conditions and used within one year of the moisture barrier bag opening date. For high-volume or long-term inventory applications, the MSL 1 rating of the ADA4622 series provides greater flexibility.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The ADA4622-2ARMZ-RL, ADA4622-2ARMZ-R7, OPA2172IDGK, and OPA2172QDGKQ1 are all ROHS3 compliant. All parts are suitable for applications with RoHS compliance requirements.

Q: Which substitute part should I select for a new design?

A: For new designs, select based on application requirements. If J-FET input characteristics (low input bias current, low input offset voltage) are essential, use the ADA4622-2ARMZ-RL or ADA4622-2ARMZ-R7. If automotive qualification is required, use the OPA2172QDGKQ1. If higher output current or expanded supply voltage range is needed and J-FET characteristics are not critical, use the OPA2172IDGK. Verify all electrical parameters against your circuit design specifications.