AD7873ACPZ Equivalent & Substitute Parts

Part Overview

The AD7873ACPZ is a touchscreen controller IC manufactured by Analog Devices Inc., designed for 4-wire resistive touchscreen applications with 12-bit resolution and serial interface capability. This component operates across a wide supply voltage range of 2.2V to 5.25V and supports both external and internal voltage references. The AD7873ACPZ is currently in Last Time Buy status, indicating that the manufacturer has announced end-of-life for this specific packaging variant. Identifying equivalent substitute parts is necessary to ensure continued design flexibility and supply chain continuity for applications currently utilizing this controller.

Substiute Parts

AD7873ACPZ

Analog Devices Inc.In Stock: 2180AD7873ACPZ Datasheet

Current PartRFQ

AD7873ARUZ

Analog Devices Inc.In Stock: 1518AD7873ARUZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AD7873ACPZ is determined by functional equivalence across core electrical and mechanical parameters. The AD7873 series maintains consistent functionality across packaging variants, with all qualified substitutes sharing identical electrical specifications: 4-wire resistive touchscreen support, 12-bit resolution, serial interface, dual voltage reference capability, and identical supply voltage and temperature operating ranges. Substitution eligibility is based on these invariant functional parameters rather than packaging form factor. The primary differentiator between the main part and substitute is the package type and associated moisture sensitivity level, which do not affect the core controller functionality.

Parameter Comparison

Engineering Selection Recommendations

The AD7873ARUZ serves as the direct functional equivalent to the AD7873ACPZ, with identical electrical performance across all specified parameters. The substitute part maintains Active product status, ensuring ongoing availability and supply chain stability compared to the Last Time Buy status of the main part. Both components are ROHS3 compliant and carry equivalent regulatory certifications (REACH Unaffected, EAR99 ECCN classification). Selection between these parts is determined by PCB layout requirements and packaging constraints: the AD7873ACPZ utilizes a 16-LFCSP-VQ (4x4) package with exposed pad configuration, while the AD7873ARUZ employs a 16-TSSOP package. The moisture sensitivity level differs between variants (MSL 3 for LFCSP versus MSL 1 for TSSOP), which may influence storage and handling procedures but does not affect functional performance.

Frequently Asked Questions (FAQ)

Q: Are the AD7873ACPZ and AD7873ARUZ electrically interchangeable?

A: Yes. Both parts share identical electrical specifications including 12-bit resolution, 4-wire resistive touchscreen support, serial interface, supply voltage range (2.2V ~ 5.25V), and operating temperature range (-40°C ~ 85°C). Functional performance is equivalent.

Q: What is the primary difference between these two parts?

A: The primary difference is packaging. The AD7873ACPZ uses a 16-LFCSP-VQ (4x4) package with exposed pad, while the AD7873ARUZ uses a 16-TSSOP package. This affects PCB footprint, board layout, and moisture sensitivity level (MSL 3 versus MSL 1).

Q: Why is the AD7873ACPZ in Last Time Buy status?

A: Last Time Buy status indicates the manufacturer has announced end-of-life for this specific packaging variant. The AD7873ARUZ remains in Active status, providing continued availability for new designs and ongoing production.

Q: Can I use the AD7873ARUZ as a drop-in replacement for the AD7873ACPZ?

A: Electrical functionality is identical, but physical replacement requires PCB redesign due to different package footprints. The 16-LFCSP-VQ and 16-TSSOP packages have different pin layouts and board area requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both the AD7873ACPZ and AD7873ARUZ are ROHS3 compliant and carry identical regulatory certifications (REACH Unaffected, EAR99).

Q: Which part should I specify for new designs?

A: The AD7873ARUZ is recommended for new designs due to its Active product status and improved moisture sensitivity level (MSL 1 versus MSL 3), providing better long-term supply availability and reduced handling constraints.