AD8628ART-R2 Equivalent & Substitute Parts

Part Overview

The AD8628ART-R2 is a chopper (zero-drift) amplifier manufactured by Analog Devices Inc., designed as a single-circuit, rail-to-rail operational amplifier in SOT-23-5 surface mount packaging. This device is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity. The AD8628ART-R2 delivers ultra-low input offset voltage of 1 µV and minimal input bias current of 30 pA, making it suitable for precision measurement and signal conditioning applications requiring low drift characteristics.

Substiute Parts

AD8628ART-R2

Analog Devices Inc.In Stock: 2444AD8628ART-R2 Datasheet

Current PartRFQ

AD8628ARTZ-R2

Analog Devices Inc.In Stock: 3017AD8628ARTZ-R2 Datasheet

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LMV2011MF/NOPB

Texas InstrumentsIn Stock: 3071LMV2011MF/NOPB Datasheet

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MAX4250AAUK+T

Analog Devices Inc./Maxim IntegratedIn Stock: 5848MAX4250AAUK+T Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the AD8628ART-R2 is determined by strict alignment of electrical and mechanical parameters within the linear amplifier category. The primary substitution criteria include:

Direct Equivalence Parameters:

• Single-circuit operational amplifier architecture
• Rail-to-rail output capability
• SOT-23-5 surface mount package
• Supply voltage range compatibility (minimum 2.7 V, maximum 5 V or higher)
• Operating temperature range coverage (-40°C to 125°C or broader)

Functional Compatibility Parameters:

• Gain bandwidth product of 2.5 MHz or greater
• Input offset voltage specification of 1 µV or lower
• Input bias current of 30 pA or lower
• Output current capability of 30 mA or greater per channel

The AD8628ARTZ-R2 qualifies as a direct equivalent, maintaining identical electrical specifications and active product status. The LMV2011MF/NOPB and MAX4250AAUK+T are classified as similar substitutes, offering compatible package and supply voltage parameters with enhanced performance characteristics in specific areas, though with operational temperature range or amplifier type variations.

Parameter Comparison

Engineering Selection Recommendations

AD8628ARTZ-R2 (Direct Equivalent)

The AD8628ARTZ-R2 is the primary substitute for the obsolete AD8628ART-R2. This device maintains identical electrical specifications across all critical parameters: 1 µV input offset voltage, 30 pA input bias current, 2.5 MHz gain bandwidth product, and -40°C to 125°C operating temperature range. The AD8628ARTZ-R2 carries active product status and is ROHS3 compliant, providing long-term design continuity. Packaging and mounting characteristics are identical, enabling direct board-level substitution without design modification.

LMV2011MF/NOPB (Compatible Substitute)

The LMV2011MF/NOPB from Texas Instruments offers compatible SOT-23-5 packaging and rail-to-rail output architecture. This general-purpose amplifier provides enhanced slew rate (4 V/µs versus 1 V/µs) and superior input bias current performance (3 pA versus 30 pA). The supply voltage range extends to 5.25 V maximum. However, the operating temperature range is limited to 0°C to 70°C, which does not cover the full -40°C to 125°C specification of the original device. This substitute is suitable for applications operating within the 0°C to 70°C temperature window. The LMV2011MF/NOPB is ROHS3 compliant and carries active product status.

MAX4250AAUK+T (Compatible Substitute)

The MAX4250AAUK+T from Analog Devices Inc./Maxim Integrated provides SOT-23-5 packaging with push-pull, rail-to-rail output configuration. This general-purpose amplifier supports the full -40°C to 125°C operating temperature range and extended supply voltage range (2.4 to 5.5 V). The device delivers significantly higher output current capability (68 mA versus 30 mA per channel). Input offset voltage is specified at 1.85 mV, which exceeds the 1 µV specification of the original device. The MAX4250AAUK+T is ROHS3 compliant and carries active product status. This substitute is appropriate for applications where higher output current and extended supply voltage range are beneficial, provided the higher input offset voltage is acceptable.

Frequently Asked Questions (FAQ)

Q: Can the AD8628ARTZ-R2 be used as a direct replacement for the AD8628ART-R2?

A: Yes. The AD8628ARTZ-R2 maintains identical electrical specifications and package configuration. Both devices are single-circuit, rail-to-rail chopper amplifiers in SOT-23-5 packaging with 1 µV input offset voltage, 30 pA input bias current, and -40°C to 125°C operating temperature range. The primary difference is product status: AD8628ARTZ-R2 is active and ROHS3 compliant.

Q: What are the key differences between the AD8628ART-R2 and the LMV2011MF/NOPB?

A: Both devices share SOT-23-5 packaging and rail-to-rail output capability. The LMV2011MF/NOPB offers faster slew rate (4 V/µs versus 1 V/µs) and lower input bias current (3 pA versus 30 pA). However, the LMV2011MF/NOPB operating temperature range is limited to 0°C to 70°C, which does not cover the full -40°C to 125°C range of the original device. Additionally, the LMV2011MF/NOPB is classified as a general-purpose amplifier rather than a zero-drift device.

Q: Is the MAX4250AAUK+T suitable for all applications using the AD8628ART-R2?

A: The MAX4250AAUK+T is compatible for applications within the -40°C to 125°C temperature range and 2.4 to 5.5 V supply voltage range. The device provides higher output current (68 mA versus 30 mA). However, input offset voltage is specified at 1.85 mV, which is significantly higher than the 1 µV specification of the original device. Applications requiring ultra-low input offset voltage should not use this substitute.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The AD8628ARTZ-R2, LMV2011MF/NOPB, and MAX4250AAUK+T are all ROHS3 compliant. The original AD8628ART-R2 does not specify RoHS status due to its obsolete classification.

Q: Can these substitutes be used interchangeably on the same printed circuit board?

A: All substitute parts use identical SOT-23-5 (SC-74A) packaging and surface mount configuration, enabling physical interchangeability on the printed circuit board. However, electrical performance differences must be evaluated for each application. The AD8628ARTZ-R2 provides the closest electrical match. The LMV2011MF/NOPB and MAX4250AAUK+T introduce performance variations that may require circuit validation.

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

A: All devices, including the original AD8628ART-R2 and all substitutes, carry Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life and no special moisture control requirements during storage or handling.

Q: Which substitute is recommended for precision measurement applications?

A: The AD8628ARTZ-R2 is the recommended substitute for precision measurement applications. It maintains the original device's ultra-low input offset voltage (1 µV) and input bias current (30 pA), which are critical for low-drift signal conditioning. The LMV2011MF/NOPB and MAX4250AAUK+T, while offering enhanced performance in other areas, do not match the zero-drift characteristics required for precision applications.