AD7820LPZ Equivalent & Substitute Parts

Part Overview

The AD7820LPZ is an 8-bit flash analog-to-digital converter manufactured by Analog Devices Inc., designed for single-ended input data acquisition applications. It features a 1:1 sample-and-hold to ADC ratio with parallel data interface and external voltage reference configuration. The device is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, design updates, and procurement planning.

Substiute Parts

AD7820LPZ

Analog Devices Inc.In Stock: 2369AD7820LPZ Datasheet

Current PartRFQ

AD7820LNZ

Analog Devices Inc.In Stock: 711AD7820LNZ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AD7820LPZ is determined by strict alignment with the following core electrical and mechanical parameters:

• Resolution: 8-bit conversion capability
• Input Configuration: Single-ended input with 1 channel
• Conversion Architecture: Flash ADC topology
• Reference Configuration: External voltage reference
• Supply Voltages: 5V analog and 5V digital supplies
• Data Interface: Parallel output
• Operating Temperature: -40°C to 85°C range
• Sample-and-Hold Ratio: 1:1 configuration

The AD7820LNZ meets all electrical parameter requirements for functional equivalence. The primary difference is packaging format: the main part uses 20-PLCC surface-mount packaging, while the substitute uses 20-PDIP through-hole packaging. This packaging distinction affects board-level integration methodology but does not alter electrical functionality or performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The AD7820LNZ is the direct functional equivalent of the AD7820LPZ. Both devices share identical electrical specifications, resolution, input configuration, and operating parameters. The substitute part carries Active product status, ensuring ongoing availability and manufacturing support, whereas the main part is classified as Obsolete.

Selection between these parts depends on board-level integration requirements:

• Surface-mount applications requiring the original 20-PLCC package format necessitate retention of the AD7820LPZ or evaluation of alternative surface-mount ADC solutions.
• Through-hole or mixed-technology boards can directly implement the AD7820LNZ without electrical redesign. Pin-to-pin functional compatibility is maintained across the parallel data interface and control signals.

Both parts comply with identical export control classifications (EAR99) and tariff codes (HTSUS 8542.39.0001), with unlimited moisture sensitivity tolerance (MSL 1).

Frequently Asked Questions (FAQ)

Q: Can the AD7820LNZ directly replace the AD7820LPZ in an existing design?

A: Electrical and functional replacement is complete. The AD7820LNZ maintains identical 8-bit resolution, single-ended input, flash architecture, external reference configuration, and 5V supply requirements. Board-level integration differs due to packaging: the substitute uses through-hole 20-DIP format versus the original surface-mount 20-PLCC format. PCB layout and socket/connector modifications are required.

Q: What is the primary reason for seeking substitutes for the AD7820LPZ?

A: The AD7820LPZ is classified as Obsolete. The AD7820LNZ provides functional equivalence with Active product status, ensuring continued manufacturing availability and supply chain reliability.

Q: Are there electrical performance differences between the two parts?

A: No. Both devices are based on the same AD7820 base product number and share identical electrical specifications: 8-bit resolution, 1-channel single-ended input, flash ADC architecture, external voltage reference, 5V analog and digital supplies, and -40°C to 85°C operating temperature range.

Q: What packaging considerations apply to substitution?

A: The AD7820LPZ uses 20-PLCC surface-mount packaging (9x9mm J-lead). The AD7820LNZ uses 20-PDIP through-hole packaging (0.300" pitch, 7.62mm spacing). Substitution requires PCB redesign to accommodate the different package footprint and mounting methodology.

Q: Do both parts have the same compliance and regulatory status?

A: Yes. Both parts carry identical export control classification (EAR99), tariff code (HTSUS 8542.39.0001), and moisture sensitivity level (MSL 1 - Unlimited). The substitute part additionally carries RoHS3 compliance and REACH Unaffected status.