AD8628WARTZ-RL Equivalent & Substitute Parts

Part Overview

The AD8628WARTZ-RL is an automotive-grade zero-drift operational amplifier manufactured by Analog Devices Inc. in a SOT-23-5 surface mount package. This single-circuit, rail-to-rail amplifier is designed for precision applications requiring minimal input offset voltage and low input bias current. The part is active and in production with 731 units currently in stock.

Substitute parts are identified to address packaging format requirements, inventory availability, or specific application constraints while maintaining functional equivalence or compatibility within defined electrical parameters.

Substiute Parts

AD8628WARTZ-RL

Analog Devices Inc.In Stock: 835AD8628WARTZ-RL Datasheet

Current PartRFQ

ADA4528-1ARMZ-R7

Analog Devices Inc.In Stock: 3544ADA4528-1ARMZ-R7 Datasheet

SimilarRFQ

AD8628ARTZ-R2

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

Parametric EquivalentRFQ

AD8628ARTZ-REEL7

Analog Devices Inc.In Stock: 15400AD8628ARTZ-REEL7 Datasheet

Parametric EquivalentRFQ

AD8628WARTZ-R7

Analog Devices Inc.In Stock: 3556AD8628WARTZ-R7 Datasheet

Parametric EquivalentRFQ

MAX4477AUA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 1615MAX4477AUA+T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AD8628WARTZ-RL are classified into two categories based on substitution criteria:

Parametric Equivalents (Same Electrical Specifications, Different Packaging Format)

Parts AD8628ARTZ-R2, AD8628ARTZ-REEL7, and AD8628WARTZ-R7 are parametric equivalents. These parts maintain identical electrical specifications including slew rate (1 V/µs), gain bandwidth product (2.5 MHz), input offset voltage (1 µV), input bias current (30 pA), supply current (850 µA), and output current (30 mA). The primary difference is packaging format: these parts are supplied in Cut Tape (CT) & Digi-Reel® format rather than Tape & Reel (TR). AD8628WARTZ-R7 retains the automotive grade designation. All parametric equivalents use the SOT-23-5 package and are suitable for direct functional replacement in applications where packaging format does not impose constraints.

Functional Substitute (Different Electrical Specifications, Different Package)

Part ADA4528-1ARMZ-R7 is a functional substitute with different electrical characteristics and package format. This part is a zero-drift amplifier with improved specifications in certain parameters: higher gain bandwidth product (4 MHz versus 2.5 MHz), lower input offset voltage (0.3 µV versus 1 µV), and lower input bias current (90 pA versus 30 pA). However, it has a lower slew rate (0.5 V/µs versus 1 V/µs) and higher supply current (1.5 mA versus 850 µA). The ADA4528-1ARMZ-R7 uses an 8-MSOP package rather than SOT-23-5, requiring PCB layout modification. This substitute is applicable when improved precision and bandwidth are prioritized over slew rate performance and power consumption.

Non-Equivalent Part (Different Amplifier Type)

Part MAX4477AUA+T is a general-purpose amplifier with two circuits, not a zero-drift amplifier. This part does not qualify as a functional substitute for single-circuit zero-drift applications due to fundamental differences in amplifier architecture and circuit count.

Parameter Comparison

Engineering Selection Recommendations

For Direct Functional Replacement (No PCB Modification Required)

Select AD8628ARTZ-R2, AD8628ARTZ-REEL7, or AD8628WARTZ-R7 when packaging format is the only constraint. These parts are parametric equivalents with identical electrical performance. AD8628WARTZ-R7 is recommended for automotive applications requiring the automotive grade designation. AD8628ARTZ-REEL7 offers the highest inventory availability (15,300 units) for high-volume production requirements.

For Applications Requiring Improved Precision and Bandwidth

Select ADA4528-1ARMZ-R7 when lower input offset voltage (0.3 µV) and higher gain bandwidth product (4 MHz) are required. This substitution requires PCB layout modification due to the 8-MSOP package format. The trade-off includes reduced slew rate (0.5 V/µs) and increased supply current (1.5 mA). This part is suitable for precision measurement and instrumentation applications where bandwidth and offset voltage are critical parameters.

Compliance and Certification

All substitute parts maintain ROHS3 compliance, MSL Level 1 (Unlimited), and REACH Unaffected status. All parts operate across the -40°C to 125°C temperature range. Parts are suitable for automotive and industrial applications based on active product status and compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can AD8628ARTZ-R2 be used as a direct replacement for AD8628WARTZ-RL?

A: AD8628ARTZ-R2 is a parametric equivalent with identical electrical specifications. The primary difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) and the absence of automotive grade designation. For non-automotive applications, this part is functionally equivalent. For automotive applications, AD8628WARTZ-R7 is recommended to maintain the automotive grade specification.

Q: What is the difference between AD8628ARTZ-REEL7 and AD8628WARTZ-R7?

A: Both parts are parametric equivalents with identical electrical specifications and SOT-23-5 packaging. The primary difference is the grade designation: AD8628WARTZ-R7 carries the automotive grade, while AD8628ARTZ-REEL7 does not. For automotive applications, AD8628WARTZ-R7 is the appropriate selection.

Q: Why does ADA4528-1ARMZ-R7 have different electrical specifications?

A: ADA4528-1ARMZ-R7 is a different device within the zero-drift amplifier family with enhanced precision characteristics. It features lower input offset voltage (0.3 µV versus 1 µV) and higher gain bandwidth product (4 MHz versus 2.5 MHz). However, it has reduced slew rate (0.5 V/µs versus 1 V/µs) and higher supply current (1.5 mA versus 850 µA). Selection depends on application requirements for precision versus speed and power consumption.

Q: Does ADA4528-1ARMZ-R7 require PCB layout changes?

A: Yes. ADA4528-1ARMZ-R7 uses an 8-MSOP package, while AD8628WARTZ-RL uses SOT-23-5. The 8-MSOP package has different pin configuration and footprint, requiring PCB redesign. This substitution is not suitable for applications where PCB modification is not feasible.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (AD8628ARTZ-R2, AD8628ARTZ-REEL7, AD8628WARTZ-R7, and ADA4528-1ARMZ-R7) are ROHS3 compliant with MSL Level 1 (Unlimited) and REACH Unaffected status.

Q: Which substitute part has the highest inventory availability?

A: AD8628ARTZ-REEL7 has the highest inventory with 15,300 units in stock, compared to 731 units for the main part AD8628WARTZ-RL. This part is suitable for high-volume production requirements.

Q: Can MAX4477AUA+T be used as a substitute?

A: No. MAX4477AUA+T is a general-purpose amplifier with two circuits, not a zero-drift amplifier with one circuit. The fundamental differences in amplifier architecture and circuit count make this part unsuitable for applications requiring single-circuit zero-drift performance.

Q: What is the supply voltage range for each substitute?

A: AD8628WARTZ-RL, AD8628ARTZ-R2, AD8628ARTZ-REEL7, and AD8628WARTZ-R7 all support 2.7 V to 5 V supply range. ADA4528-1ARMZ-R7 supports a wider range of 2.2 V to 5.5 V, providing greater flexibility for low-voltage applications.