LM2902M/ELLI821 Equivalent & Substitute Parts

Part Overview

The LM2902M/ELLI821 is a general purpose operational amplifier featuring four independent circuits in a push-pull output configuration. Manufactured by Texas Instruments, this device is packaged in a 14-SOIC surface mount package and operates across a supply voltage range of 3V to 26V with an operating temperature range of -40°C to 85°C.

The LM2902M/ELLI821 is classified as an obsolete product. Locating equivalent and substitute parts is necessary to maintain design continuity, ensure component availability for production, and support long-term system maintenance where this device is currently deployed.

Substiute Parts

LM2902M/ELLI821

Texas InstrumentsIn Stock: 1033LM2902M/ELLI821 Datasheet

Current PartRFQ

LM2902MX/NOPB

Texas InstrumentsIn Stock: 1605LM2902MX/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM2902M/ELLI821 is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Requirements:

• Amplifier Type: General Purpose
• Number of Circuits: 4
• Gain Bandwidth Product: 1 MHz
• Current - Input Bias: 45 nA
• Voltage - Input Offset: 2 mV
• Current - Supply: 1.5 mA
• Current - Output / Channel: 40 mA
• Operating Temperature Range: -40°C to 85°C (TJ)

Mechanical Compatibility Requirements:

• Package / Case: 14-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount

Compliance Requirements:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The LM2902MX/NOPB qualifies as a direct substitute based on matching all electrical and mechanical parameters. The substitute part maintains identical input bias current, input offset voltage, supply current, output current per channel, and operating temperature specifications. Both devices are housed in the 14-SOIC package and are ROHS3 compliant with MSL 1 rating.

Parameter Comparison

Engineering Selection Recommendations

The LM2902MX/NOPB is the primary substitute for the obsolete LM2902M/ELLI821. Both devices are manufactured by Texas Instruments and share identical electrical specifications across all critical parameters including input bias current, input offset voltage, supply current, and output current per channel. Both operate within the same temperature range and are housed in the identical 14-SOIC package.

The LM2902MX/NOPB offers an extended maximum supply voltage specification of 32V compared to the 26V maximum of the original part. This extended specification provides additional design margin in applications operating near the upper supply voltage limit.

The LM2902MX/NOPB maintains active product status with Texas Instruments, ensuring ongoing availability and manufacturing support. Both parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, indicating equivalent environmental handling requirements.

Frequently Asked Questions (FAQ)

Q: Can the LM2902MX/NOPB be used as a direct replacement for the LM2902M/ELLI821 in existing designs?

A: Yes. The LM2902MX/NOPB is electrically and mechanically equivalent to the LM2902M/ELLI821 across all specified parameters. Both devices feature four general purpose amplifier circuits, identical input bias current of 45 nA, identical input offset voltage of 2 mV, and operate within the same temperature range. The 14-SOIC package dimensions are identical, enabling direct PCB footprint compatibility.

Q: What is the significance of the extended maximum supply voltage specification on the LM2902MX/NOPB?

A: The LM2902MX/NOPB specifies a maximum supply voltage of 32V compared to 26V for the LM2902M/ELLI821. In applications operating at or near the upper supply voltage limit, the LM2902MX/NOPB provides additional design margin. For applications operating below 26V, this specification difference does not affect device operation.

Q: Are there any differences in packaging or handling between these two parts?

A: Both parts are housed in the 14-SOIC surface mount package with identical dimensions of 0.154" width (3.90mm). Both carry MSL 1 (Unlimited) moisture sensitivity rating, indicating identical environmental handling and storage requirements. The LM2902MX/NOPB is supplied in Cut Tape (CT) and Digi-Reel® packaging formats.

Q: Why is the LM2902M/ELLI821 classified as obsolete?

A: The LM2902M/ELLI821 is no longer in active production by Texas Instruments. The LM2902MX/NOPB serves as the active production equivalent, maintaining all electrical and mechanical specifications while offering extended availability and manufacturing support.

Q: Are both parts ROHS3 compliant?

A: Yes. Both the LM2902M/ELLI821 and LM2902MX/NOPB are ROHS3 compliant, meeting the same environmental and regulatory requirements for lead-free and hazardous substance restrictions.