PCM2704DBRG4 Equivalent & Substitute Parts

Part Overview

The PCM2704DBRG4 is a 16-bit stereo audio codec with integrated USB 2.0 interface, manufactured by Texas Instruments in a 28-SSOP surface mount package. This device supports 48 kHz sampling rate and operates across dual supply voltages (3V–3.6V and 5V), making it suitable for consumer audio applications requiring USB connectivity and SPI data interface.

The PCM2704DBRG4 is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

PCM2704DBRG4

Texas InstrumentsIn Stock: 648PCM2704DBRG4 Datasheet

Current PartRFQ

PCM2704DBR

National SemiconductorIn Stock: 3257PCM2704DBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PCM2704DBRG4 is determined by strict equivalence across the following critical parameters:

• Audio Resolution & Sampling: 16-bit resolution at 48 kHz sampling rate
• Channel Configuration: 2-channel stereo audio
• Interface Protocol: SPI and USB 2.0 data interface support
• Supply Voltage Compatibility: Dual supply operation (3V–3.6V and 5V)
• Operating Temperature Range: -25°C to 85°C
• Package Specification: 28-SSOP surface mount package with 0.209" (5.30mm) width
• Compliance Standards: ROHS3 compliance and MSL Level 1

The PCM2704DBR meets all substitution criteria as a direct equivalent, maintaining identical electrical specifications, interface protocols, and physical packaging requirements.

Parameter Comparison

Engineering Selection Recommendations

The PCM2704DBR is a direct functional and physical equivalent to the PCM2704DBRG4. Both devices share identical electrical specifications, interface protocols, and package dimensions, enabling pin-for-pin replacement in existing circuit designs.

The primary distinction is manufacturer origin and product status. The PCM2704DBRG4 (Texas Instruments) is discontinued, while the PCM2704DBR (National Semiconductor) maintains active production status with confirmed inventory availability (3183 units in stock). Both parts comply with ROHS3 standards and carry MSL Level 1 moisture sensitivity ratings, ensuring equivalent reliability and environmental compliance for production applications.

Selection of the PCM2704DBR is appropriate for new designs, production restocking, and repair applications where component continuity is required.

Frequently Asked Questions (FAQ)

Q: Can the PCM2704DBR replace the PCM2704DBRG4 in existing designs?

A: Yes. The PCM2704DBR is a direct substitute with identical electrical specifications, interface protocols (SPI and USB 2.0), supply voltage requirements (3V–3.6V and 5V), operating temperature range (-25°C to 85°C), and 28-SSOP package dimensions. No circuit modifications are required.

Q: Are there differences in audio performance between these parts?

A: Both parts maintain identical audio specifications: 16-bit resolution, 48 kHz sampling rate, and 2-channel stereo configuration. Performance characteristics are equivalent.

Q: What is the significance of different manufacturers (Texas Instruments vs. National Semiconductor)?

A: Both manufacturers produce the PCM2704 series to the same electrical and physical specifications. The part numbers differ only in manufacturer designation. Functional compatibility is maintained across both sources.

Q: Is the 28-SSOP package identical between both parts?

A: Yes. Both parts use the 28-SSOP package with 0.209" (5.30mm) width. PCB footprints and assembly processes are identical.

Q: What is the moisture sensitivity level (MSL) for these parts?

A: Both parts carry MSL Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Are both parts ROHS3 compliant?

A: The PCM2704DBRG4 is confirmed ROHS3 compliant. Compliance information for the PCM2704DBR is not specified in the provided data; however, as a direct equivalent from the same product series, equivalent compliance is expected.