EL5146CS Equivalent & Substitute Parts

Part Overview

The EL5146CS is a voltage feedback amplifier manufactured by Renesas Electronics Corporation, designed as a single-circuit, rail-to-rail operational amplifier in an 8-SOIC surface mount package. This device is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity. The EL5146CS operates across a 4.75V to 5.25V supply range with a slew rate of 200V/µs and gain bandwidth product of 60 MHz, serving applications requiring precision voltage feedback amplification in compact form factors.

Substiute Parts

EL5146CS

Renesas Electronics CorporationIn Stock: 3030EL5146CS Datasheet

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OPA2354AIDDA

Texas InstrumentsIn Stock: 3368OPA2354AIDDA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the EL5146CS is determined by functional equivalence across core electrical and mechanical parameters. The primary substitution criteria are:

Functional Requirements:

• Amplifier topology: Voltage feedback architecture
• Output configuration: Rail-to-rail capability
• Circuit count: Single operational amplifier per package
• Slew rate: Minimum 200V/µs performance
• Gain bandwidth product: Minimum 60 MHz
• Supply voltage compatibility: Operation within or exceeding 4.75V to 5.25V range
• Input bias current: Maximum 2 nA
• Output current capability: Minimum 120 mA per channel

Mechanical Requirements:

• Package type: 8-pin surface mount configuration
• Pin compatibility: 8-SOIC or equivalent 8-pin surface mount package

Compliance Considerations:

• Product status: Active or available alternatives to obsolete designation
• RoHS compliance: Preferred for new designs
• Moisture sensitivity: Acceptable for standard handling and storage

The OPA2354AIDDA from Texas Instruments satisfies these substitution criteria through equivalent voltage feedback amplifier topology, rail-to-rail output, and compatible surface mount packaging, despite differences in circuit count and certain performance metrics.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The EL5146CS is classified as obsolete, whereas the OPA2354AIDDA maintains active product status from Texas Instruments. For new designs and production continuity, the OPA2354AIDDA provides an active alternative with ongoing manufacturer support and availability.

Compliance and Certification: The OPA2354AIDDA is ROHS3 compliant, meeting current regulatory requirements for electronic components in restricted substance directives. The EL5146CS is RoHS non-compliant, presenting compliance challenges for applications subject to RoHS regulations. The OPA2354AIDDA also features improved moisture sensitivity classification (MSL 1, Unlimited) compared to the EL5146CS (MSL 2, 1 Year), reducing handling and storage constraints.

Electrical Performance: The OPA2354AIDDA demonstrates superior performance in gain bandwidth product (100 MHz versus 60 MHz) and -3dB bandwidth (250 MHz versus 100 MHz). Input offset voltage is significantly lower (2 mV versus 15 mV), and input bias current is lower (3 pA versus 2 nA). The OPA2354AIDDA operates across an extended supply voltage range (2.5V to 5.5V) compared to the narrow 4.75V to 5.25V range of the EL5146CS, providing greater design flexibility.

Package and Thermal Considerations: Both devices utilize 8-pin surface mount packages with identical 0.154" (3.90mm) width. The OPA2354AIDDA employs an 8-PowerSOIC package with integrated thermal pad, offering improved heat dissipation compared to the standard 8-SOIC package of the EL5146CS.

Temperature Range: The OPA2354AIDDA supports an extended operating temperature range (-40°C to 125°C) versus the EL5146CS range (-40°C to 85°C), accommodating applications requiring higher temperature operation.

Frequently Asked Questions (FAQ)

Q: Can the OPA2354AIDDA directly replace the EL5146CS in existing designs?

A: The OPA2354AIDDA is functionally equivalent as a voltage feedback, rail-to-rail amplifier in an 8-pin surface mount package. Pin compatibility exists between the 8-SOIC and 8-PowerSOIC packages. However, the OPA2354AIDDA contains two operational amplifier circuits versus one in the EL5146CS. Circuit designs utilizing only a single amplifier channel can implement the OPA2354AIDDA with the second channel unused or configured for alternative functions. PCB layout modifications may be required to accommodate the thermal pad present on the OPA2354AIDDA package.

Q: What are the key electrical differences between these devices?

A: The OPA2354AIDDA provides higher gain bandwidth product (100 MHz versus 60 MHz), lower input offset voltage (2 mV versus 15 mV), and lower input bias current (3 pA versus 2 nA). The EL5146CS offers higher slew rate (200V/µs versus 150V/µs). The OPA2354AIDDA operates across a wider supply voltage range (2.5V to 5.5V versus 4.75V to 5.25V) and supports higher operating temperatures (up to 125°C versus 85°C).

Q: Are there packaging considerations for substitution?

A: Both devices use 8-pin surface mount packages with identical 0.154" (3.90mm) width, ensuring mechanical compatibility on standard PCB layouts. The OPA2354AIDDA includes an integrated thermal pad for improved heat dissipation. PCB design files may require minor modifications to accommodate the thermal pad connection, typically connected to ground or a designated thermal plane.

Q: What is the significance of the OPA2354AIDDA containing two circuits versus one in the EL5146CS?

A: The OPA2354AIDDA integrates two independent operational amplifier circuits in a single 8-pin package. In applications requiring only one amplifier, the second circuit remains available for additional signal processing functions or can be configured as a unity-gain buffer for impedance isolation. This dual-circuit architecture does not prevent single-circuit substitution but offers design flexibility for enhanced functionality.

Q: How do compliance certifications affect substitution decisions?

A: The OPA2354AIDDA is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components. The EL5146CS is RoHS non-compliant, which may restrict its use in applications subject to RoHS directives. For new designs and production environments with regulatory compliance requirements, the OPA2354AIDDA is the appropriate selection.

Q: What is the impact of moisture sensitivity level differences?

A: The EL5146CS has MSL 2 rating with a 1-year shelf life, requiring controlled storage conditions and bake-out procedures before reflow soldering if storage duration exceeds specified limits. The OPA2354AIDDA has MSL 1 rating with unlimited shelf life, eliminating moisture sensitivity constraints and reducing handling complexity during manufacturing and storage.

Q: Can the OPA2354AIDDA operate in the narrow 4.75V to 5.25V supply range of the EL5146CS?

A: Yes. The OPA2354AIDDA operates across 2.5V to 5.5V, which encompasses the 4.75V to 5.25V range of the EL5146CS. Designs operating within the narrow EL5146CS supply range will function with the OPA2354AIDDA without modification.