SA3291A-E1-T Equivalent & Substitute Parts

Part Overview

The SA3291A-E1-T is an embedded DSP audio IC manufactured by onsemi, designed for audiology applications. This component operates at 4.1MHz with a 32-SIP surface mount package configuration. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

SA3291A-E1-T

onsemiIn Stock: 904SA3291A-E1-T Datasheet

Current PartRFQ

E7160-0-102A57-AG

onsemiIn Stock: 787E7160-0-102A57-AG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SA3291A-E1-T is determined by the following critical parameters:

• Manufacturer Continuity: Both parts are manufactured by onsemi, ensuring design consistency and supply chain reliability.
• Functional Category: Audio processing capability is maintained across both components.
• Interface Compatibility: The substitute part supports I2C communication, which is present in the original design.
• Mounting and Package Type: Surface mount configuration is preserved for PCB integration compatibility.
• Compliance Standards: Both parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements.
• Product Status: The substitute part is active, ensuring long-term availability and support.

Parameter Comparison

Engineering Selection Recommendations

The E7160-0-102A57-AG serves as an active substitute for the obsolete SA3291A-E1-T based on the following criteria:

• Active Product Status: The E7160-0-102A57-AG maintains active manufacturing status, ensuring continued availability and technical support from onsemi.
• Regulatory Compliance: Both components meet ROHS3 and REACH requirements, maintaining compliance with current environmental and safety standards.
• Manufacturer Alignment: Sourcing from the same manufacturer (onsemi) ensures design consistency and reduces qualification complexity.
• Interface Preservation: I2C communication support is maintained in the substitute part, with additional interface options available for enhanced system flexibility.
• Operating Temperature Range: The substitute part supports an extended temperature range (0°C ~ 50°C), providing broader operational capability compared to the original specification.

Frequently Asked Questions (FAQ)

Q: Can the E7160-0-102A57-AG directly replace the SA3291A-E1-T in existing designs?

A: The E7160-0-102A57-AG shares core audio processing functionality and I2C interface compatibility with the SA3291A-E1-T. However, PCB layout modifications are required due to package differences (32-SIP versus 57-SIP). Firmware or software integration may require evaluation based on the expanded interface options available in the substitute part.

Q: What are the key differences in package configuration?

A: The SA3291A-E1-T uses a 32-SIP package, while the E7160-0-102A57-AG uses a 57-SIP (6.8x3.94) package. This difference affects PCB footprint, pin count, and physical dimensions. Design layout must be updated accordingly.

Q: Are both parts compliant with current environmental standards?

A: Yes. Both the SA3291A-E1-T and E7160-0-102A57-AG are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: What is the significance of the E7160-0-102A57-AG having a 2.4GHz clock rate versus the 4.1MHz of the original?

A: The E7160-0-102A57-AG operates at a significantly higher clock rate (2.4GHz), providing substantially greater processing capability. This enhanced performance supports more complex audio processing algorithms and higher data throughput requirements.

Q: Does the substitute part require different power supply specifications?

A: Yes. The E7160-0-102A57-AG specifies distinct voltage requirements: 3.30V for I/O and 1.25V for core voltage. Power supply design must be updated to accommodate these specifications, which differ from the SA3291A-E1-T.