AK4516AVF Equivalent & Substitute Parts

Part Overview

The AK4516AVF is a 16-bit audio interface IC with integrated DAC and ADC featuring a programmable gain amplifier (PGA), manufactured by Asahi Kasei Microdevices (AKM). This component operates as a serial audio codec in a 24-VSOP surface mount package and is classified as obsolete product status.

Due to its obsolete classification, sourcing new units from primary distribution channels is limited. Identifying functionally compatible substitute components ensures design continuity and supply chain reliability for applications requiring audio interface functionality with similar electrical and mechanical specifications.

Substiute Parts

AK4516AVF

Asahi Kasei Microdevices/AKMIn Stock: 1298AK4516AVF Datasheet

Current PartRFQ

AK4558EN

Asahi Kasei Microdevices/AKMIn Stock: 1745AK4558EN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AK4516AVF is determined by the following critical parameters:

Primary Compatibility Criteria:

• Serial data interface architecture
• Audio codec functionality classification
• Surface mount technology
• Analog and digital supply voltage overlap within specified ranges
• Operating temperature range compatibility
• Moisture sensitivity level rating

The AK4558EN qualifies as a manufacturer-recommended substitute based on shared serial interface protocol, audio codec classification, and surface mount construction. Both components operate within overlapping voltage supply ranges and support audio signal processing applications. The substitute maintains functional compatibility through equivalent serial communication architecture despite differences in resolution, channel count, and package form factor.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The AK4516AVF is classified as obsolete, whereas the AK4558EN maintains active production status. Selection of the AK4558EN as a substitute ensures long-term component availability and supply chain stability.

Compliance & Certification: Both components carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, confirming regulatory equivalence for export and tariff purposes. The AK4558EN includes RoHS3 compliance certification, meeting current environmental standards.

Electrical Compatibility: The AK4558EN operates within overlapping voltage supply ranges for both analog (2.4V ~ 3.6V) and digital (1.8V ~ 3.6V) domains. Extended operating temperature range (-40°C ~ 105°C) provides broader environmental tolerance compared to the original component.

Physical Integration: Package form factor differs between components. The AK4516AVF uses 24-LSSOP packaging, while the AK4558EN employs 28-WFQFN with exposed pad. PCB layout redesign and footprint modification are required for physical substitution.

Functional Enhancement: The AK4558EN provides increased resolution (32-bit versus 16-bit), dual ADC/DAC channels (2/2 versus 1/1), and integrated PLL with Sigma-Delta architecture. These enhancements support higher fidelity audio processing without compromising backward compatibility at the serial interface level.

Frequently Asked Questions (FAQ)

Q: Can the AK4558EN directly replace the AK4516AVF without PCB modifications?

A: No. The components use different package types (24-LSSOP versus 28-WFQFN). PCB footprint redesign and layout modification are mandatory. Pin assignments and signal routing must be verified against respective datasheets before implementation.

Q: Are the serial interface protocols compatible between these components?

A: Both components implement serial audio interface architecture. However, detailed protocol specifications, timing requirements, and control register definitions must be reviewed in component datasheets to ensure firmware and hardware compatibility with existing system designs.

Q: What are the storage and handling differences between these components?

A: The AK4516AVF carries MSL 1 rating (unlimited shelf life). The AK4558EN carries MSL 2 rating, requiring storage at controlled humidity (≤60% RH) for up to one year. Extended storage beyond one year requires baking procedures per IPC standards before assembly.

Q: Does the AK4558EN's higher resolution guarantee improved audio quality in existing designs?

A: Resolution capability alone does not determine audio quality. System-level factors including analog signal conditioning, power supply filtering, PCB layout, and firmware implementation determine actual performance. The substitute's enhanced specifications provide design flexibility but do not automatically improve existing system performance.

Q: What supply chain advantages does the AK4558EN offer?

A: The AK4558EN maintains active production status with reported inventory of 1700 units in stock, compared to the obsolete AK4516AVF with limited remaining inventory of 1235 units. Active status ensures continued availability through standard distribution channels and reduces long-term supply risk.