PCM2912PJTG4 Equivalent & Substitute Parts

Part Overview

The PCM2912PJTG4 is a stereo audio codec interface with integrated USB connectivity, designed for 16-bit audio applications. This device integrates one analog-to-digital converter (ADC) and two digital-to-analog converters (DACs) with sigma-delta modulation for high-fidelity audio processing. The part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design support and component procurement.

Substiute Parts

PCM2912PJTG4

Texas InstrumentsIn Stock: 732PCM2912PJTG4 Datasheet

Current PartRFQ

PCM2912PJT

Texas InstrumentsIn Stock: 1456PCM2912PJT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PCM2912PJTG4 is determined by strict equivalence across the following critical parameters:

• Functional Architecture: Identical ADC/DAC configuration (1 ADC, 2 DACs)
• Audio Specifications: Matching resolution (16 bits), S/N ratio (92 dB), and dynamic range (90 dB)
• Interface Protocol: USB data interface
• Electrical Characteristics: Identical supply voltage ranges for both analog and digital domains
• Package Compatibility: 32-TQFP (7x7 mm) surface mount package
• Regulatory Compliance: ROHS3 compliance and MSL 1 rating

The PCM2912PJT meets all these criteria and is classified as a manufacturer-recommended substitute. The primary distinction is packaging format: the PCM2912PJTG4 uses tube packaging, while the PCM2912PJT uses tray packaging. Both parts share the same base product number (PCM2912) and are functionally interchangeable at the circuit level.

Parameter Comparison

Engineering Selection Recommendations

The PCM2912PJT is the direct functional equivalent of the PCM2912PJTG4. Both parts are legacy products with discontinued or restricted design status, indicating that neither should be selected for new designs. However, for applications requiring component replacement or continuation of existing designs, the PCM2912PJT provides complete electrical and functional compatibility.

The only practical difference between these parts is packaging format. The PCM2912PJTG4 is supplied in tube packaging, while the PCM2912PJT is supplied in tray packaging. This distinction affects only procurement and handling procedures, not circuit performance or reliability.

Both parts maintain ROHS3 compliance and MSL 1 rating, confirming equivalent environmental and regulatory standing. The identical supply voltage ranges, audio specifications, and package geometry ensure direct substitution without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can the PCM2912PJT replace the PCM2912PJTG4 in an existing design?

A: Yes. The PCM2912PJT is electrically and functionally identical to the PCM2912PJTG4. Both parts share the same 32-TQFP (7x7 mm) package, supply voltage requirements, audio specifications, and operating temperature range. No circuit modifications are required.

Q: What is the difference between these two part numbers?

A: The primary difference is packaging format. The PCM2912PJTG4 uses tube packaging, while the PCM2912PJT uses tray packaging. Both contain the same die and provide identical electrical performance.

Q: Are both parts suitable for new designs?

A: No. The PCM2912PJTG4 is discontinued at DiGi Electronics, and the PCM2912PJT is marked "Not For New Designs." Both are legacy products. For new applications, consult Texas Instruments for current-generation audio codec alternatives.

Q: Do these parts require different PCB layouts or assembly procedures?

A: No. Both parts use the same 32-TQFP package with identical pin assignments and mechanical dimensions. PCB layout and assembly procedures are interchangeable.

Q: What are the key parameters that define substitution eligibility?

A: Substitution is determined by matching: ADC/DAC configuration (1/2), resolution (16 bits), S/N ratio (92 dB), dynamic range (90 dB), USB interface, supply voltage range (4.35V–5.25V), operating temperature (-25°C to 85°C), and 32-TQFP package type. All these parameters are identical between the two parts.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant with MSL 1 rating. Regulatory and environmental certifications are equivalent.