AK4554VT Equivalent & Substitute Parts

Part Overview

The AK4554VT is a stereo audio codec manufactured by Asahi Kasei Microdevices (AKM), designed for audio interface applications requiring 16-bit serial data processing. This component integrates dual analog-to-digital converters (ADCs) and dual digital-to-analog converters (DACs) with Sigma-Delta modulation architecture. The AK4554VT is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support, redesigns, and new production implementations where this component is no longer readily available through standard procurement channels.

Substiute Parts

AK4554VT

Asahi Kasei Microdevices/AKMIn Stock: 2153AK4554VT Datasheet

Current PartRFQ

PCM3008T/2K

Texas InstrumentsIn Stock: 3163PCM3008T/2K Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AK4554VT is determined by the following critical parameters:

Functional Requirements:

• Stereo audio codec architecture with 2 ADCs and 2 DACs
• 16-bit serial data interface
• Sigma-Delta modulation support

Physical Compatibility:

• 16-TSSOP package with 0.173" width (4.40mm)
• Surface mount technology

Electrical Compatibility:

• Analog supply voltage range: minimum 1.6V, maximum 3.6V
• Digital supply voltage range: minimum 1.6V, maximum 3.6V
• Operating temperature range: -40°C to 85°C

Regulatory Compliance:

• ROHS3 compliance
• MSL rating of 1 (Unlimited)

The PCM3008T/2K from Texas Instruments meets all these substitution criteria, with the exception of the minimum analog and digital supply voltage (2.1V vs. 1.6V) and the minimum operating temperature (-25°C vs. -40°C). These differences represent tighter constraints in the substitute part and do not prevent substitution in applications operating within the PCM3008T/2K specifications.

Parameter Comparison

Engineering Selection Recommendations

The PCM3008T/2K is the designated manufacturer-recommended substitute for the obsolete AK4554VT. Both components are ROHS3 compliant and carry MSL rating 1, ensuring equivalent environmental and regulatory standing.

The PCM3008T/2K is currently in active production status, providing supply chain continuity and long-term availability. The substitute part demonstrates improved signal-to-noise ratio performance (88 dB ADC / 92 dB DAC vs. 80 dB ADC / 85 dB DAC) and maintains equivalent dynamic range specifications.

Design considerations for substitution include the narrower supply voltage range (2.1V minimum vs. 1.6V minimum) and reduced low-temperature operating range (-25°C minimum vs. -40°C minimum) of the PCM3008T/2K. Applications requiring operation below 2.1V supply voltage or below -25°C ambient temperature require alternative solutions.

Frequently Asked Questions (FAQ)

Q: Can the PCM3008T/2K be used as a direct replacement for the AK4554VT?

A: Yes, for applications operating within the PCM3008T/2K specifications. The substitute part shares identical package geometry (16-TSSOP), pin count, and functional architecture. Verify that your application operates at supply voltages of 2.1V or higher and ambient temperatures of -25°C or higher.

Q: What are the key differences between these two parts?

A: The primary differences are product status (obsolete vs. active), supply voltage minimum (1.6V vs. 2.1V), operating temperature minimum (-40°C vs. -25°C), and signal-to-noise ratio performance. The PCM3008T/2K offers superior audio performance metrics.

Q: Are there any package compatibility concerns?

A: No. Both components use the 16-TSSOP package with identical 0.173" (4.40mm) width. PCB footprints and assembly processes are directly compatible.

Q: What compliance certifications apply to both parts?

A: Both the AK4554VT and PCM3008T/2K are ROHS3 compliant with MSL rating 1 (Unlimited moisture sensitivity level). Both carry ECCN classification EAR99 and HTSUS code 8542.39.0001.

Q: If my application requires operation below 2.1V or below -25°C, what should I do?

A: The AK4554VT specifications must be maintained. Consult alternative codec solutions that support the required voltage and temperature ranges, or consider design modifications to operate within the PCM3008T/2K envelope.