ADM690ARM Equivalent & Substitute Parts

Part Overview

The ADM690ARM is a supervisor integrated circuit from Analog Devices Inc. designed for power management applications. It functions as a battery backup circuit supervisor with push-pull, totem pole output configuration, monitoring a single voltage threshold at 4.65V. The device is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The ADM690ARM is packaged in a 16-SOIC surface mount configuration with unlimited moisture sensitivity rating.

Substiute Parts

ADM690ARM

Analog Devices Inc.In Stock: 714ADM690ARM Datasheet

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ADM690AARMZ

Analog Devices Inc.In Stock: 1130ADM690AARMZ Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the ADM690ARM is determined by functional equivalence across the following critical parameters:

• Voltage Threshold Monitoring: 4.65V threshold requirement
• Output Configuration: Push-pull, totem pole output topology
• Reset Logic: Active low reset signal
• Operating Temperature Range: -40°C to 85°C compatibility
• Functional Type: Battery backup circuit supervision
• Mounting Technology: Surface mount capability

The ADM690AARMZ qualifies as a substitute based on matching these core functional parameters. While package geometry differs (8-MSOP versus 16-SOIC), the electrical specifications and operational characteristics remain equivalent for the supervisor function. The reset timeout specification differs between parts (35ms minimum for ADM690ARM versus 140ms minimum for ADM690AARMZ), which represents a functional variation that must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The ADM690ARM is classified as obsolete, necessitating component substitution for new designs and production continuity. The ADM690AARMZ is an active product from the same manufacturer and base product family, offering functional equivalence for the supervisor circuit application.

Selection between these parts must account for the following factors:

Package Geometry: The ADM690AARMZ uses an 8-MSOP package (0.118", 3.00mm width) compared to the 16-SOIC package (0.154", 3.90mm width) of the ADM690ARM. PCB layout modifications are required to accommodate the different package footprint and pin configuration.

Reset Timeout Specification: The ADM690AARMZ specifies a 140ms minimum reset timeout, compared to 35ms minimum for the ADM690ARM. This four-fold increase in reset timeout duration must be evaluated against system-level reset sequencing requirements.

Product Status and Compliance: The ADM690AARMZ carries active product status with RoHS3 compliance and REACH unaffected designation, supporting long-term supply chain availability and regulatory compliance for new designs.

Frequently Asked Questions (FAQ)

Q: Can the ADM690AARMZ directly replace the ADM690ARM without PCB modifications?

A: No. The ADM690AARMZ uses an 8-MSOP package while the ADM690ARM uses a 16-SOIC package. Different footprints and pin counts require PCB layout redesign. Pin-to-pin compatibility cannot be assumed.

Q: What is the significance of the different reset timeout values?

A: The ADM690ARM specifies 35ms minimum reset timeout, while the ADM690AARMZ specifies 140ms minimum. This affects the duration of the reset signal assertion during power-up or fault conditions. System designs must verify that the longer timeout of the ADM690AARMZ is compatible with downstream reset sequencing requirements.

Q: Are both parts functionally equivalent for voltage threshold monitoring?

A: Yes. Both parts monitor a single voltage threshold at 4.65V with identical active-low reset logic and push-pull, totem pole output configuration. The core supervisor function is equivalent.

Q: What are the compliance differences between these parts?

A: The ADM690ARM is obsolete with no current compliance certifications listed. The ADM690AARMZ is an active product with RoHS3 compliance and REACH unaffected status, making it suitable for new designs subject to current regulatory requirements.

Q: Are there package-related considerations for high-volume production?

A: Yes. The 8-MSOP package of the ADM690AARMZ offers a smaller footprint (0.118" width) compared to the 16-SOIC package (0.154" width), potentially enabling more compact PCB designs. However, the smaller package may present challenges for manual assembly or rework operations depending on production capabilities.