PCM3008T Equivalent & Substitute Parts

Part Overview

The PCM3008T is a stereo audio codec interface manufactured by Texas Instruments, designed for 16-bit serial audio applications. This device integrates dual ADCs and DACs with Sigma-Delta conversion architecture, operating across analog and digital supply voltages of 2.1V to 3.6V. The PCM3008T is classified as obsolete, necessitating identification of functionally compatible alternatives for new designs and ongoing system support.

Substiute Parts

PCM3008T

Texas InstrumentsIn Stock: 1409PCM3008T Datasheet

Current PartRFQ

PCM3002E

Texas InstrumentsIn Stock: 4943PCM3002E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the PCM3008T is determined by the following critical parameters:

• Stereo audio codec functionality with dual ADC/DAC architecture
• Serial data interface protocol compatibility
• Sigma-Delta conversion technology
• Operating temperature range: -25°C to 85°C minimum
• Surface mount packaging capability
• RoHS3 compliance and REACH unaffected status

The PCM3002E qualifies as a manufacturer-recommended substitute based on these core criteria. While the PCM3002E introduces enhanced specifications (20-bit resolution versus 16-bit, improved S/N and dynamic range), it maintains functional compatibility through identical stereo audio codec architecture, dual ADC/DAC configuration, Sigma-Delta conversion, and equivalent compliance certifications. The minimum analog and digital supply voltage increases from 2.1V to 2.7V, which represents a tighter specification but remains compatible with standard 3.3V supply designs.

Parameter Comparison

Engineering Selection Recommendations

The PCM3002E is the manufacturer-recommended substitute for the obsolete PCM3008T. Both devices maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for new production and legacy system support.

Key considerations for selection:

The PCM3002E offers enhanced audio performance through 20-bit resolution and improved signal-to-noise and dynamic range specifications compared to the 16-bit PCM3008T. Both devices operate across the -25°C to 85°C temperature range and employ identical Sigma-Delta conversion architecture with dual ADC/DAC configuration.

Package geometry differs between the two devices: the PCM3008T uses 16-TSSOP (4.40mm width) while the PCM3002E uses 24-SSOP (5.30mm width). PCB layout modifications are required for package substitution.

Minimum supply voltage specification increases from 2.1V to 2.7V with the PCM3002E. Systems operating at supply voltages below 2.7V require design verification before substitution.

Frequently Asked Questions (FAQ)

Q: Can the PCM3002E directly replace the PCM3008T without PCB modifications?

A: No. The PCM3002E uses a 24-SSOP package (5.30mm width) while the PCM3008T uses a 16-TSSOP package (4.40mm width). PCB layout and footprint changes are required. Pin configuration differences must be verified against device datasheets before implementation.

Q: What are the key functional differences between these devices?

A: Both devices are stereo audio codecs with dual ADC/DAC architecture and Sigma-Delta conversion. The PCM3002E provides higher resolution (20-bit versus 16-bit) and improved audio performance metrics (S/N ratio and dynamic range). Operating temperature ranges are identical.

Q: Is the PCM3002E compatible with 2.1V supply designs?

A: No. The PCM3002E minimum supply voltage is 2.7V for both analog and digital supplies, compared to 2.1V for the PCM3008T. Systems designed for 2.1V operation require alternative solutions.

Q: Are both devices RoHS and REACH compliant?

A: Yes. Both the PCM3008T and PCM3002E are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

Q: Why is the PCM3008T classified as obsolete?

A: The PCM3008T has reached end-of-life status from Texas Instruments. The PCM3002E represents the active product line continuation with enhanced specifications and ongoing manufacturing support.