SA3291A-E1 Equivalent & Substitute Parts

Part Overview

The SA3291A-E1 is an embedded DSP audio IC manufactured by onsemi, designed for audiology applications. This 32-pin surface mount module operates at 4.1MHz with I2C and SDA interfaces. The product is currently obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and new designs requiring similar audio processing capabilities.

Substiute Parts

SA3291A-E1

onsemiIn Stock: 1157SA3291A-E1 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 is determined by the following critical parameters:

• Manufacturer Alignment: onsemi maintains product continuity and supply chain consistency
• Product Category: Embedded audio processing ICs with DSP functionality
• Interface Compatibility: I2C protocol support for system integration
• Mounting Type: Surface mount technology for PCB assembly compatibility
• Compliance Standards: ROHS3 compliance and REACH unaffected status for regulatory requirements
• Operating Temperature Range: Minimum support for 0°C ~ 40°C operational envelope

The E7160-0-102A57-AG qualifies as a substitute based on shared manufacturer origin, audio processing function, I2C interface inclusion, surface mount packaging, and equivalent compliance certifications. The substitute represents an active product with enhanced capabilities suitable for replacement applications.

Parameter Comparison

Engineering Selection Recommendations

The E7160-0-102A57-AG is an active product substitute for the obsolete SA3291A-E1. Selection is based on:

• Product Status: The substitute is actively manufactured and supported, ensuring long-term availability and supply chain stability
• Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements
• Manufacturer Continuity: onsemi manufacture of both parts ensures consistent quality standards and technical support
• Interface Compatibility: I2C protocol is present in both parts, supporting existing system communication requirements
• Surface Mount Technology: Both parts use surface mount packaging, compatible with standard PCB assembly processes

Design migration from SA3291A-E1 to E7160-0-102A57-AG requires evaluation of package footprint differences (32-SIP to 57-SIP) and expanded interface capabilities in the substitute part.

Frequently Asked Questions (FAQ)

Q: Can the E7160-0-102A57-AG directly replace the SA3291A-E1 without PCB modification?

A: Package footprint differences exist between the 32-SIP and 57-SIP modules. PCB layout modification is required to accommodate the different pin configuration and physical dimensions (6.8x3.94mm for the substitute).

Q: What is the primary reason for substitution?

A: The SA3291A-E1 is obsolete. The E7160-0-102A57-AG is an active product from the same manufacturer with audio DSP functionality and I2C interface support.

Q: Are there compliance differences between the two parts?

A: Both parts are ROHS3 compliant and REACH unaffected. No compliance barriers exist for substitution.

Q: Does the substitute part support the same operating temperature range?

A: The E7160-0-102A57-AG supports 0°C ~ 50°C, which exceeds the SA3291A-E1 range of 0°C ~ 40°C. The substitute is suitable for applications within the original temperature envelope.

Q: What interface differences should be considered?

A: The SA3291A-E1 supports I2C and SDA. The E7160-0-102A57-AG includes I2C plus additional interfaces (GPIO, LSAD, PCM, SPI, UART). System designs must account for expanded interface availability in the substitute.

Q: Is inventory availability a factor in substitution?

A: The E7160-0-102A57-AG has 769 units in stock. Availability supports immediate procurement for replacement and new designs.