EL2276CSZ Equivalent & Substitute Parts

Part Overview

The EL2276CSZ is a current feedback amplifier manufactured by Renesas Electronics Corporation, configured as a dual-circuit operational amplifier in a 14-SOIC surface mount package. This device is classified as obsolete, which necessitates identification of equivalent substitute components for ongoing design support and procurement requirements. The EL2276CSZ delivers a slew rate of 800V/µs with a -3dB bandwidth of 70 MHz, suitable for applications requiring moderate-speed signal conditioning and amplification.

Substiute Parts

EL2276CSZ

Renesas Electronics CorporationIn Stock: 1418EL2276CSZ Datasheet

Current PartRFQ

LT1259IS#PBF

Analog Devices Inc.In Stock: 1140LT1259IS#PBF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EL2276CSZ is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Amplifier topology: Current feedback configuration
• Circuit count: Dual-circuit (2 circuits minimum)
• Package compatibility: 14-SOIC surface mount form factor with 0.154" (3.90mm) width
• Operating temperature range: -40°C to 85°C minimum
• Supply voltage span: Minimum 3V to maximum 12V operation capability
• RoHS3 compliance and REACH unaffected status

Secondary Compatibility Parameters:

• Slew rate: 800V/µs or greater
• -3dB bandwidth: 70 MHz or greater
• Input bias current: 4 µA or lower
• Input offset voltage: 2.5 mV or lower
• Output current per channel: 55 mA or greater
• Supply current per channel: 1 mA or lower

The LT1259IS#PBF meets all primary substitution criteria and exceeds secondary compatibility parameters, qualifying it as a direct substitute for the obsolete EL2276CSZ.

Parameter Comparison

Engineering Selection Recommendations

The LT1259IS#PBF is qualified as a direct substitute for the EL2276CSZ based on the following engineering factors:

Compliance and Support Status: The LT1259IS#PBF maintains active product status with Analog Devices Inc., ensuring ongoing availability and technical support. Both devices are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for current procurement and deployment.

Package and Mechanical Compatibility: Both devices utilize identical 14-SOIC surface mount packaging with 0.154" (3.90mm) width, enabling direct board-level substitution without layout modifications or mechanical redesign.

Electrical Performance: The LT1259IS#PBF exceeds the EL2276CSZ electrical specifications across critical performance parameters. The substitute device delivers 1600V/µs slew rate (versus 800V/µs), 130 MHz bandwidth (versus 70 MHz), and 60 mA output current per channel (versus 55 mA). These performance enhancements provide design margin and improved signal fidelity in existing applications.

Supply Voltage Consideration: The LT1259IS#PBF requires a minimum supply voltage of 4V, compared to 3V for the EL2276CSZ. Applications operating at 3V supply voltage require circuit redesign or alternative component selection. The maximum supply voltage rating of 30V for the substitute provides expanded operational flexibility.

Moisture and Thermal Handling: The LT1259IS#PBF features MSL 1 (unlimited moisture sensitivity level) compared to MSL 3 for the EL2276CSZ, reducing moisture-related reliability concerns during storage and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the LT1259IS#PBF be used as a direct pin-for-pin replacement for the EL2276CSZ?

A: Yes. Both devices are configured as dual-circuit current feedback amplifiers in 14-SOIC packages with identical pinout and mechanical dimensions. Direct board-level substitution is possible without layout modifications.

Q: What is the primary limitation when substituting the LT1259IS#PBF for the EL2276CSZ?

A: The LT1259IS#PBF requires a minimum supply voltage of 4V, whereas the EL2276CSZ operates at 3V minimum. Applications designed for 3V single-supply operation require circuit modification or alternative component selection.

Q: Does the higher slew rate and bandwidth of the LT1259IS#PBF create compatibility issues?

A: No. Higher slew rate (1600V/µs versus 800V/µs) and bandwidth (130 MHz versus 70 MHz) represent performance enhancements that maintain backward compatibility. Existing circuit designs benefit from improved signal fidelity and reduced distortion.

Q: Are there differences in input bias current between these devices?

A: Yes. The LT1259IS#PBF exhibits 20 µA input bias current compared to 4 µA for the EL2276CSZ. Applications with high-impedance input sources or precision transimpedance configurations may require input bias current compensation adjustment.

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

A: The LT1259IS#PBF carries MSL 1 (unlimited moisture sensitivity) versus MSL 3 (168 hours) for the EL2276CSZ. This indicates superior moisture resistance and reduced risk of moisture-induced failures during storage, handling, and assembly processes.

Q: Is the higher supply current of the LT1259IS#PBF a concern?

A: The LT1259IS#PBF draws 5 mA per channel compared to 1 mA for the EL2276CSZ. Power supply design must accommodate this increased current draw. Applications with strict power budget constraints require power consumption analysis.

Q: Can the LT1259IS#PBF operate at 12V supply voltage?

A: Yes. The LT1259IS#PBF supports supply voltages up to 30V, exceeding the 12V maximum of the EL2276CSZ. This provides expanded operational flexibility for applications requiring higher supply voltages.

Q: Are both devices suitable for the same temperature range?

A: Yes. Both the EL2276CSZ and LT1259IS#PBF operate across the -40°C to 85°C temperature range, ensuring thermal compatibility in equivalent applications.