PCM2903E/2K Equivalent & Substitute Parts

Part Overview

The PCM2903E/2K is a stereo audio codec with USB interface manufactured by Texas Instruments, designed for audio signal processing applications requiring 16-bit resolution with integrated analog-to-digital and digital-to-analog conversion. The device is classified as Obsolete, indicating it is no longer in active production. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support legacy system maintenance or redesign initiatives.

Substiute Parts

PCM2903E/2K

Texas InstrumentsIn Stock: 811PCM2903E/2K Datasheet

Current PartRFQ

PCM2903BDB

Texas InstrumentsIn Stock: 1012PCM2903BDB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PCM2903E/2K is determined by strict equivalence across the following critical parameters:

• Data Interface: USB connectivity requirement
• Audio Resolution: 16-bit processing capability
• ADC/DAC Configuration: Dual 2/2 channel architecture
• Sigma Delta Modulation: Required for audio quality
• Signal-to-Noise Ratio: ADC 89 dB / DAC 96 dB typical
• Dynamic Range: ADC 89 dB / DAC 93 dB typical
• Supply Voltage: 3V to 3.6V for both analog and digital domains
• Package: 28-SSOP form factor with 0.209" width (5.30mm)
• Mounting: Surface mount technology
• Compliance: ROHS3 and REACH requirements

The PCM2903BDB meets all these criteria and is identified as a direct substitute. Both parts share the same base product number (PCM2903) and maintain electrical and mechanical compatibility within the specified parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

The PCM2903BDB is a direct electrical and mechanical substitute for the PCM2903E/2K. Both parts are compliant with ROHS3 and REACH requirements, ensuring regulatory alignment for industrial and consumer applications.

The PCM2903BDB offers an extended operating temperature range (-25°C to 85°C) compared to the PCM2903E/2K (0°C to 70°C), providing greater thermal flexibility for applications requiring operation outside standard commercial temperature bands.

Both parts carry discontinued product status. The PCM2903E/2K is classified as Obsolete, while the PCM2903BDB is designated Not For New Designs. For new design initiatives, evaluation of current-generation audio codec alternatives from Texas Instruments or other manufacturers is recommended to ensure long-term supply chain viability and access to technical support.

Frequently Asked Questions (FAQ)

Q: Can PCM2903BDB replace PCM2903E/2K in existing designs?

A: Yes. The PCM2903BDB is electrically and mechanically equivalent. Both devices share identical USB interface, 16-bit resolution, dual ADC/DAC configuration, signal-to-noise ratios, dynamic range specifications, supply voltage requirements, and 28-SSOP package footprint. Pin-for-pin compatibility is maintained.

Q: What is the difference between PCM2903E/2K and PCM2903BDB?

A: The primary difference is operating temperature range. PCM2903E/2K operates from 0°C to 70°C, while PCM2903BDB operates from -25°C to 85°C. PCM2903BDB provides extended low-temperature and high-temperature capability. Product status differs: PCM2903E/2K is Obsolete; PCM2903BDB is Not For New Designs.

Q: Are both parts still available for purchase?

A: Both parts are discontinued from active production. Availability is limited to existing inventory from authorized distributors. Current inventory levels should be verified with component suppliers before design commitment.

Q: What packaging options are available for these parts?

A: Both PCM2903E/2K and PCM2903BDB are supplied in 28-SSOP surface mount packages with 0.209" width (5.30mm). PCM2903BDB is available in Tube packaging. No alternative package options are provided for these part numbers.

Q: Are there compliance certifications for these parts?

A: Both parts are ROHS3 Compliant and REACH Unaffected. Moisture Sensitivity Level is 1 (Unlimited) for both devices, indicating no moisture sensitivity restrictions during storage or handling.

Q: Should new designs use these parts?

A: No. Both parts are discontinued. PCM2903E/2K is Obsolete and PCM2903BDB is Not For New Designs. New audio codec designs should evaluate current-generation alternatives from Texas Instruments or equivalent manufacturers to ensure supply chain continuity and ongoing technical support.