AD737ANZ Equivalent & Substitute Parts

Part Overview

The AD737ANZ is an RMS to DC converter integrated circuit manufactured by Analog Devices Inc., housed in an 8-DIP through-hole package. This component converts AC RMS signals to proportional DC outputs, serving critical functions in precision measurement and signal conditioning applications. The AD737ANZ is classified as obsolete, making identification of suitable alternatives essential for ongoing system support, maintenance, and new design implementations where through-hole packaging or specific electrical characteristics are required.

Substiute Parts

AD737ANZ

Analog Devices Inc.In Stock: 719AD737ANZ Datasheet

Current PartRFQ

AD737JNZ

Analog Devices Inc.In Stock: 5792AD737JNZ Datasheet

DirectRFQ

AD8436ARQZ

Analog Devices Inc.In Stock: 3350AD8436ARQZ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AD737ANZ is determined by the following critical parameters:

Direct Functional Equivalent (Same Package, Same Mounting):

• Identical RMS to DC converter functionality
• 8-DIP through-hole package (0.300", 7.62mm)
• Matching supply voltage range: 2.8V, -3.2V ~ ±16.5V
• Supply current: 170 µA
• Base product number: AD737

The AD737JNZ meets all these criteria as a direct equivalent with active product status.

Similar Functional Alternative (Different Package, Different Mounting):

• RMS to DC converter functionality
• Different package: 20-QSOP surface mount (0.154", 3.90mm Width)
• Different supply voltage range: ±2.4V ~ 18V, 4.8V ~ 36V
• Higher supply current: 325 µA
• Base product number: AD8436

The AD8436ARQZ provides equivalent RMS to DC conversion but requires PCB redesign due to surface-mount packaging and different electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Recommended for Existing Designs):

Select AD737JNZ when maintaining existing through-hole PCB layouts. This part is functionally identical to the AD737ANZ with matching electrical specifications and package geometry. The AD737JNZ carries active product status with RoHS3 compliance and REACH unaffected designation, ensuring long-term availability and regulatory compliance for production systems.

For New Designs or PCB Redesign Scenarios:

The AD8436ARQZ is suitable when PCB redesign is feasible. This part offers active product status and modern surface-mount packaging, reducing board space requirements. However, the AD8436ARQZ operates at higher supply current (325 µA versus 170 µA) and supports an extended voltage range (±2.4V ~ 18V, 4.8V ~ 36V), requiring circuit validation to confirm compatibility with existing power supply and signal conditioning designs.

Frequently Asked Questions (FAQ)

Q: Can AD737JNZ be used as a direct drop-in replacement for AD737ANZ?

A: Yes. The AD737JNZ is electrically and mechanically identical to the AD737ANZ. Both use the 8-DIP through-hole package with matching pin configurations, supply voltage ranges (2.8V, -3.2V ~ ±16.5V), and supply current specifications (170 µA). No circuit modifications are required.

Q: What is the primary difference between AD737JNZ and AD8436ARQZ?

A: The AD737JNZ maintains the original 8-DIP through-hole package, while the AD8436ARQZ uses a 20-QSOP surface-mount package. Additionally, the AD8436ARQZ operates at higher supply current (325 µA) and supports a wider voltage range (±2.4V ~ 18V, 4.8V ~ 36V). PCB redesign is necessary to implement the AD8436ARQZ.

Q: Why is the AD737ANZ classified as obsolete?

A: The AD737ANZ has reached end-of-life status. The AD737JNZ provides the same functionality with active product status, ensuring continued manufacturing and supply chain availability.

Q: Are there packaging or compliance differences between these parts?

A: All three parts share identical Moisture Sensitivity Level (MSL) ratings of 1 (Unlimited). The AD737JNZ and AD8436ARQZ both carry RoHS3 compliance and REACH unaffected status, meeting modern regulatory requirements for electronic components.

Q: Which substitute should be selected for a legacy system requiring through-hole components?

A: The AD737JNZ is the appropriate selection. It preserves the through-hole mounting requirement while providing active product status and modern compliance certifications.