EL5146CSZ Equivalent & Substitute Parts

Part Overview

The EL5146CSZ 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 procurement continuity. The EL5146CSZ 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

EL5146CSZ

Renesas Electronics CorporationIn Stock: 2414EL5146CSZ Datasheet

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OPA2354AIDDA

Texas InstrumentsIn Stock: 3368OPA2354AIDDA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the EL5146CSZ is determined by alignment across the following critical parameters:

Functional Architecture: Voltage feedback amplifier topology with rail-to-rail output capability Package Compatibility: 8-pin surface mount configuration with 3.90mm width Supply Voltage Range: Operation within or encompassing the 4.75V to 5.25V specification Output Drive Capability: Current output per channel sufficient for 120 mA load requirements Frequency Performance: Gain bandwidth product and slew rate adequate for the application Environmental Compliance: RoHS3 compliance and operating temperature range

The OPA2354AIDDA from Texas Instruments qualifies as a substitute based on these criteria. Although the OPA2354AIDDA contains two circuits compared to the single circuit of the EL5146CSZ, it maintains voltage feedback architecture, rail-to-rail output, compatible 8-pin surface mount packaging, and exceeds the supply voltage and frequency specifications of the original device.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The EL5146CSZ is classified as obsolete, whereas the OPA2354AIDDA maintains active product status from Texas Instruments. Active status ensures continued availability, manufacturing support, and compliance documentation.

Compliance and Certification: Both devices are ROHS3 compliant and carry EAR99 ECCN classification. The OPA2354AIDDA demonstrates superior moisture handling with MSL 1 (unlimited) compared to the EL5146CSZ MSL 3 (168 hours), reducing risk in storage and assembly environments.

Supply Voltage Compatibility: The OPA2354AIDDA supply range (2.5V to 5.5V) encompasses the EL5146CSZ specification (4.75V to 5.25V), ensuring direct substitution in existing 5V supply designs without modification.

Thermal Operating Range: The OPA2354AIDDA extends the upper operating temperature to 125°C compared to 85°C for the EL5146CSZ, providing enhanced performance margin in elevated ambient conditions.

Circuit Count Difference: The OPA2354AIDDA integrates two amplifier circuits versus one in the EL5146CSZ. In single-amplifier applications, the second circuit remains unused but does not compromise substitution validity. Designs utilizing only one channel incur no functional penalty.

Output Current Specification: The OPA2354AIDDA specifies 100 mA per channel output current, which is 17% lower than the EL5146CSZ 120 mA specification. Applications requiring output currents exceeding 100 mA require load analysis to confirm compatibility.

Frequently Asked Questions (FAQ)

Q: Can the OPA2354AIDDA directly replace the EL5146CSZ in existing PCB layouts?

A: The OPA2354AIDDA uses an 8-PowerSOIC package with identical 0.154" (3.90mm) width as the EL5146CSZ 8-SOIC package. Pin-to-pin compatibility exists for standard 8-pin SOIC footprints. The PowerPad variant includes an additional thermal pad, which does not prevent substitution on standard SOIC footprints but may require PCB modification to utilize the thermal pad for improved heat dissipation.

Q: What is the impact of the OPA2354AIDDA having two circuits instead of one?

A: The dual-circuit architecture does not prevent substitution in single-amplifier applications. The unused second circuit draws minimal additional supply current (4.9 mA total for both channels versus 7 mA for the single-circuit EL5146CSZ). Designs using only one channel operate identically to the original configuration.

Q: Are there supply voltage considerations when substituting?

A: The OPA2354AIDDA operates across 2.5V to 5.5V, which fully encompasses the EL5146CSZ 4.75V to 5.25V range. Existing 5V supply designs require no modification. Designs operating at the EL5146CSZ minimum (4.75V) remain within OPA2354AIDDA specifications.

Q: How does the lower output current specification of the OPA2354AIDDA affect substitution?

A: The OPA2354AIDDA specifies 100 mA per channel output current compared to 120 mA for the EL5146CSZ. Applications with output loads requiring currents between 100 mA and 120 mA require load impedance analysis. Most standard applications operating below 100 mA experience no impact.

Q: What are the implications of the different slew rates?

A: The EL5146CSZ specifies 200 V/µs slew rate while the OPA2354AIDDA specifies 150 V/µs. The OPA2354AIDDA slew rate remains adequate for most voltage feedback amplifier applications. High-speed transient applications requiring slew rates exceeding 150 V/µs require alternative evaluation.

Q: Does the improved input offset voltage of the OPA2354AIDDA affect substitution?

A: The OPA2354AIDDA specifies 2 mV input offset voltage compared to 15 mV for the EL5146CSZ. This represents improved precision in the substitute device. Applications designed around the EL5146CSZ 15 mV specification experience enhanced performance with the OPA2354AIDDA without requiring circuit redesign.

Q: What is the significance of the MSL rating difference?

A: The EL5146CSZ carries MSL 3 (168 hours) while the OPA2354AIDDA carries MSL 1 (unlimited). MSL rating indicates moisture sensitivity during storage and assembly. The OPA2354AIDDA requires less stringent moisture control, reducing handling and storage complexity in manufacturing environments.

Q: Are there any temperature range limitations for substitution?

A: The OPA2354AIDDA operates to 125°C compared to 85°C for the EL5146CSZ. Applications operating within the EL5146CSZ temperature range (-40°C to 85°C) experience no limitation. Applications requiring operation above 85°C benefit from the extended OPA2354AIDDA specification.