AD8223ARM Equivalent & Substitute Parts

Part Overview

The AD8223ARM is an instrumentation amplifier manufactured by Analog Devices Inc., featuring a single circuit with rail-to-rail output capability in an 8-MSOP surface mount package. This device is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity. The AD8223ARM operates across a 3V to 24V supply range with low input offset voltage and minimal input bias current, making it suitable for precision measurement and signal conditioning applications.

Substiute Parts

AD8223ARM

Analog Devices Inc.In Stock: 2312AD8223ARM Datasheet

Current PartRFQ

AD8223ARMZ

Analog Devices Inc.In Stock: 1446AD8223ARMZ Datasheet

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ADA4622-2ARMZ

Analog Devices Inc.In Stock: 2352ADA4622-2ARMZ Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AD8223ARM are categorized based on functional equivalence and compatibility within the specified electrical and mechanical parameters.

Direct Equivalent (Identical Specifications): The AD8223ARMZ represents a direct equivalent to the AD8223ARM. Both devices share identical electrical characteristics including amplifier type (instrumentation), circuit count (1), output configuration (rail-to-rail), slew rate (0.3 V/µs), bandwidth (200 kHz), input bias current (12 nA), input offset voltage (250 µV), supply current (650 µA), and supply voltage range (3V to 24V). The primary distinction is packaging format (tube versus tape) and product status (active versus obsolete). The AD8223ARMZ maintains the same 8-MSOP package footprint and mounting characteristics.

Similar Substitute (Different Amplifier Architecture): The ADA4622-2ARMZ is classified as a similar substitute rather than a direct equivalent. While both devices utilize the 8-MSOP package and support rail-to-rail output operation, the ADA4622-2ARMZ employs J-FET amplifier architecture with dual circuits, contrasting with the AD8223ARM's instrumentation amplifier design with single circuit. The ADA4622-2ARMZ exhibits superior performance in slew rate (23 V/µs versus 0.3 V/µs), bandwidth (15.5 MHz versus 200 kHz), and input bias current (2 pA versus 12 nA). However, the ADA4622-2ARMZ requires a minimum supply voltage of 5V, exceeding the AD8223ARM's 3V minimum requirement, and operates at higher temperatures (-40°C to 125°C).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: The AD8223ARMZ is the appropriate selection when direct functional equivalence is required. This part maintains identical electrical specifications and package footprint while offering active product status and ROHS3 compliance. The transition from AD8223ARM to AD8223ARMZ involves no circuit redesign or performance trade-offs.

For Performance Enhancement Applications: The ADA4622-2ARMZ is suitable for applications requiring superior dynamic performance characteristics. This substitute provides significantly higher slew rate, bandwidth, and lower input bias current. Selection of the ADA4622-2ARMZ requires verification that the application circuit supports the minimum 5V supply voltage requirement and can accommodate the dual-circuit architecture. The extended operating temperature range (-40°C to 125°C) provides additional thermal margin for demanding environments.

Compliance Considerations: Both substitute parts (AD8223ARMZ and ADA4622-2ARMZ) carry ROHS3 compliance and REACH unaffected status, meeting contemporary regulatory requirements. The obsolete status of the AD8223ARM necessitates transition to an active product for long-term supply chain sustainability.

Frequently Asked Questions (FAQ)

Q: Can the AD8223ARMZ be used as a direct replacement for the AD8223ARM? A: Yes. The AD8223ARMZ is electrically and mechanically identical to the AD8223ARM. Both devices feature the same instrumentation amplifier architecture, single circuit configuration, 0.3 V/µs slew rate, 200 kHz bandwidth, and 8-MSOP package footprint. The primary difference is product status (active versus obsolete) and packaging format (tube versus tape).

Q: What are the key differences between the AD8223ARM and the ADA4622-2ARMZ? A: The AD8223ARM and ADA4622-2ARMZ differ in amplifier architecture, circuit count, and performance specifications. The AD8223ARM uses instrumentation amplifier architecture with one circuit, while the ADA4622-2ARMZ employs J-FET architecture with two circuits. The ADA4622-2ARMZ provides superior slew rate (23 V/µs versus 0.3 V/µs), bandwidth (15.5 MHz versus 200 kHz), and input bias current (2 pA versus 12 nA). The ADA4622-2ARMZ requires a minimum 5V supply voltage compared to the AD8223ARM's 3V minimum.

Q: Is the ADA4622-2ARMZ compatible with circuits designed for the AD8223ARM? A: Compatibility depends on specific circuit requirements. While both devices share the 8-MSOP package footprint and rail-to-rail output capability, the ADA4622-2ARMZ's higher performance characteristics and dual-circuit architecture may introduce differences in circuit behavior. The 5V minimum supply voltage requirement of the ADA4622-2ARMZ must be verified against the original design specification. Applications requiring the AD8223ARM's specific instrumentation amplifier characteristics and single-circuit configuration should use the AD8223ARMZ for direct compatibility.

Q: Are both substitute parts compliant with current regulatory standards? A: Yes. Both the AD8223ARMZ and ADA4622-2ARMZ are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components. The AD8223ARM does not specify compliance status.

Q: What is the significance of the 8-MSOP package specification? A: The 8-MSOP package is a surface mount package with 0.118" width and 3.00mm body width. All three parts (AD8223ARM, AD8223ARMZ, and ADA4622-2ARMZ) utilize this identical package footprint, enabling direct physical substitution on printed circuit boards without layout modifications.

Q: Why is the AD8223ARM classified as obsolete? A: The AD8223ARM is listed as obsolete by the manufacturer. The AD8223ARMZ represents the active equivalent product, ensuring continued availability and supply chain support for this device family.