AD640JPZ Equivalent & Substitute Parts

Part Overview

The AD640JPZ is a logarithmic amplifier integrated circuit manufactured by Analog Devices Inc., designed for precision logarithmic signal processing applications. This device features a single logarithmic circuit in a 20-PLCC (9x9) surface mount package with a -3dB bandwidth of 350 MHz. The AD640JPZ is classified as an obsolete product, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across critical parameters including bandwidth, supply voltage range, input bias current, and input offset voltage while accommodating different package configurations.

Substiute Parts

AD640JPZ

Analog Devices Inc.In Stock: 1468AD640JPZ Datasheet

Current PartRFQ

AD640BE

Analog Devices Inc.In Stock: 842AD640BE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AD640JPZ is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Amplifier type must be logarithmic
• Number of circuits must equal 1
• -3dB bandwidth must equal 350 MHz
• Current - input bias must equal 7 µA
• Voltage - input offset must equal 50 µV
• Current - supply must equal 35 mA
• Current - output / channel must equal 2.3 mA
• Voltage - supply span range must encompass 9 V minimum to 15 V maximum
• Moisture sensitivity level must be 1 (Unlimited)

Mechanical Compatibility Criteria:

• Mounting type must be surface mount
• Package configuration must accommodate 20-pin lead count

The AD640BE qualifies as a direct substitute based on identical electrical specifications and compatible surface mount packaging, despite differences in package geometry (20-CLCC versus 20-PLCC) and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

AD640BE as Primary Substitute:

The AD640BE is the manufacturer-recommended substitute for the AD640JPZ. This substitution is supported by complete electrical parameter equivalence across all critical specifications. The AD640BE maintains identical bandwidth, bias current, offset voltage, supply current, output current, and supply voltage range requirements.

Product Status Advantage:

The AD640BE holds active product status with Analog Devices Inc., ensuring continued availability, manufacturing support, and compliance with current industry standards. The AD640JPZ, classified as obsolete, presents supply chain risk and lacks ongoing manufacturer support.

Compliance and Certification:

The AD640BE is RoHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement. Both devices share identical ECCN (EAR99) and HTSUS (8542.33.0001) classifications.

Package Consideration:

The AD640BE utilizes a 20-CLCC package (8.89x8.89 mm) compared to the AD640JPZ 20-PLCC package (9x9 mm). Both are surface mount configurations with 20-pin lead counts. PCB layout modifications may be required to accommodate the different package geometry, though pin functionality remains identical.

Operating Temperature Range:

The AD640BE supports an extended operating temperature range of -40°C to 85°C, compared to the AD640JPZ range of 0°C to 70°C. This extended range provides additional design flexibility for applications requiring operation outside the original specification.

Frequently Asked Questions (FAQ)

Q: Can the AD640BE directly replace the AD640JPZ without circuit modifications?

A: The AD640BE provides electrical equivalence and can replace the AD640JPZ functionally. However, the different package geometry (20-CLCC versus 20-PLCC) requires PCB layout modifications. Pin assignments and electrical connections remain identical.

Q: What is the primary reason for substituting the AD640JPZ?

A: The AD640JPZ is classified as obsolete. The AD640BE is the active equivalent offering identical electrical performance with ongoing manufacturer support and compliance with current regulatory standards.

Q: Are there any electrical performance differences between these parts?

A: No. Both devices share identical specifications for bandwidth (350 MHz), input bias current (7 µA), input offset voltage (50 µV), supply current (35 mA), output current (2.3 mA), and supply voltage range (9 V to 15 V).

Q: Does the AD640BE support the same operating temperature range as the AD640JPZ?

A: The AD640BE supports an extended range of -40°C to 85°C, compared to the AD640JPZ range of 0°C to 70°C. Applications operating within the original 0°C to 70°C specification are fully compatible.

Q: What packaging differences exist between these parts?

A: The AD640JPZ uses a 20-PLCC (9x9 mm) package, while the AD640BE uses a 20-CLCC (8.89x8.89 mm) package. Both are surface mount configurations with identical pin counts and electrical functionality. PCB footprint redesign is necessary for physical compatibility.

Q: Is the AD640BE RoHS compliant?

A: Yes. The AD640BE is RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component procurement.

Q: What is the moisture sensitivity level for both parts?

A: Both the AD640JPZ and AD640BE have a moisture sensitivity level (MSL) of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage and handling.