PCM2902BDB Equivalent & Substitute Parts

Part Overview

The PCM2902BDB 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. This component is classified as not for new designs, indicating it has reached end-of-life status. Identifying equivalent and substitute parts is necessary for legacy system maintenance, design updates, and ensuring supply chain continuity for existing applications.

Substiute Parts

PCM2902BDB

Texas InstrumentsIn Stock: 1067PCM2902BDB Datasheet

Current PartRFQ

PCM2902CDB

Burr BrownIn Stock: 1148PCM2902CDB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PCM2902BDB is determined by the following critical parameters:

• Functional Equivalence: Stereo audio codec with USB interface, 16-bit resolution, 2 ADCs and 2 DACs, Sigma Delta architecture
• Package Compatibility: 28-SSOP surface mount package with identical physical dimensions (0.209", 5.30mm Width)
• Interface Specification: USB data interface with matching pin configuration
• Audio Performance: Signal-to-noise ratio and dynamic range specifications for both ADC and DAC channels
• Operating Temperature Range: -25°C ~ 85°C compatibility
• Electrical Compliance: RoHS3 and REACH compliance status

The PCM2902CDB qualifies as a direct substitute based on matching functional specifications, identical package geometry, and compatible electrical characteristics within the defined operating envelope.

Parameter Comparison

Engineering Selection Recommendations

The PCM2902CDB is a qualified substitute for the PCM2902BDB based on functional and electrical equivalence. The primary consideration for substitution is the difference in supply voltage requirements: the PCM2902BDB operates at 4.35V ~ 5.25V, while the PCM2902CDB operates at 3.1V ~ 4.6V. Circuit design must accommodate this voltage differential through appropriate power supply configuration and voltage regulation.

The PCM2902CDB holds active product status, ensuring continued availability and manufacturing support, whereas the PCM2902BDB is designated not for new designs. For legacy system maintenance, the PCM2902CDB provides equivalent audio codec functionality with identical package geometry and interface specifications. Both components maintain RoHS3 compliance and identical export classification (EAR99).

Frequently Asked Questions (FAQ)

Q: Can the PCM2902CDB directly replace the PCM2902BDB without circuit modifications?

A: Direct pin-for-pin replacement is possible due to identical 28-SSOP package geometry. However, the supply voltage difference (4.35V ~ 5.25V versus 3.1V ~ 4.6V) requires circuit design review and potential power supply reconfiguration. Verify that your application's power distribution network can accommodate the PCM2902CDB's lower voltage requirements.

Q: Are the audio performance specifications identical between these parts?

A: Yes. Both components provide identical signal-to-noise ratio (89 dB ADC / 96 dB DAC) and dynamic range (89 dB ADC / 93 dB DAC) specifications. Audio performance characteristics are equivalent across both parts.

Q: What is the significance of the product status difference?

A: The PCM2902BDB is designated not for new designs, indicating end-of-life status. The PCM2902CDB maintains active product status, ensuring ongoing manufacturing support and supply availability. For new applications, the PCM2902CDB is the recommended selection.

Q: Are both components RoHS compliant?

A: The PCM2902BDB is RoHS3 compliant. The PCM2902CDB compliance status is not specified in the provided data. Verify RoHS compliance requirements with your supplier before final component selection.

Q: Do both parts use the same USB interface protocol?

A: Yes. Both the PCM2902BDB and PCM2902CDB implement USB data interface with identical functional specifications, supporting the same USB audio codec protocol and pin configuration.