LM2900N Equivalent & Substitute Parts

Part Overview

The LM2900N is a general-purpose operational amplifier integrated circuit manufactured by Texas Instruments, featuring four independent amplifier circuits in a 14-pin DIP package. This device is classified as a Last Time Buy product, indicating discontinued production with limited remaining inventory. The LM2900N operates across a wide supply voltage range of 4.4 V to 32 V and is suitable for applications requiring general-purpose amplification in through-hole mounting configurations. Alternative equivalent parts are necessary for designs requiring active product status, different packaging formats, or enhanced electrical performance characteristics.

Substiute Parts

LM2900N

Texas InstrumentsIn Stock: 2864LM2900N Datasheet

Current PartRFQ

LM2900DR

Texas InstrumentsIn Stock: 4015LM2900DR Datasheet

MFR RecommendedRFQ

LM3900N

Texas InstrumentsIn Stock: 16169LM3900N Datasheet

MFR RecommendedRFQ

LT1058CN#PBF

Analog Devices Inc.In Stock: 2676LT1058CN#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM2900N is determined by electrical and mechanical compatibility across the following critical parameters: amplifier type classification, number of circuits, slew rate, gain bandwidth product, input bias current, supply current, output current per channel, supply voltage range, operating temperature range, and physical package format.

The LM2900N has three manufacturer-recommended equivalent parts:

LM2900DR — Surface-mount variant of the same base product (LM2900) with identical electrical specifications but different packaging (14-SOIC instead of 14-DIP). This substitute maintains all electrical parameters while enabling surface-mount assembly.

LM3900N — Alternative general-purpose amplifier from the same manufacturer family (LM3900 base product) with identical electrical specifications except for output current per channel (10 mA versus 18 mA) and a narrower operating temperature range (0°C to 70°C versus -40°C to 85°C). Packaging remains 14-DIP through-hole format.

LT1058CN#PBF — J-FET amplifier manufactured by Analog Devices Inc., representing a different amplifier topology with enhanced performance characteristics including lower input bias current (7 pA versus 30 nA), higher gain bandwidth product (5 MHz versus 2.5 MHz), and lower supply current (1.7 mA versus 6.2 mA). However, this substitute has a narrower supply voltage range (20 V to 36 V versus 4.4 V to 32 V) and operating temperature range (0°C to 70°C).

Parameter Comparison

Engineering Selection Recommendations

For packaging format conversion (through-hole to surface-mount): The LM2900DR is the direct electrical equivalent of the LM2900N, maintaining identical performance specifications while enabling surface-mount assembly in 14-SOIC format. This substitute is appropriate when PCB design requires surface-mount technology. The LM2900DR carries Active product status, ensuring long-term availability.

For through-hole applications requiring active product status: The LM3900N provides a through-hole alternative with Active product status. This substitute maintains the same package format (14-DIP) and nearly identical electrical performance. The primary differences are reduced output current per channel (10 mA versus 18 mA) and a narrower operating temperature range (0°C to 70°C). Selection of LM3900N is appropriate for applications where the reduced output current and temperature range are compatible with design requirements.

For enhanced performance with J-FET topology: The LT1058CN#PBF offers superior input bias current characteristics (7 pA versus 30 nA), higher gain bandwidth product (5 MHz versus 2.5 MHz), and significantly lower supply current (1.7 mA versus 6.2 mA). This substitute is suitable for applications requiring low-input-bias-current performance or reduced power consumption. However, the narrower supply voltage range (20 V to 36 V) and operating temperature range (0°C to 70°C) must be verified against application requirements. The LT1058CN#PBF maintains through-hole 14-DIP packaging and Active product status.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the main part specification.

Frequently Asked Questions (FAQ)

Q: Can the LM2900DR be used as a direct replacement for the LM2900N in existing through-hole PCB designs?

A: No. The LM2900DR uses 14-SOIC surface-mount packaging, while the LM2900N uses 14-DIP through-hole packaging. These packages are physically incompatible with standard PCB footprints. The LM2900DR requires PCB redesign to accommodate surface-mount assembly. For through-hole designs, use LM3900N or LT1058CN#PBF.

Q: What is the primary difference between LM3900N and LM2900N?

A: The LM3900N and LM2900N share identical electrical specifications for slew rate, gain bandwidth product, input bias current, and supply current. The key differences are: (1) output current per channel is 10 mA for LM3900N versus 18 mA for LM2900N, and (2) operating temperature range is 0°C to 70°C for LM3900N versus -40°C to 85°C for LM2900N. The LM3900N has Active product status, while LM2900N is Last Time Buy.

Q: When should the LT1058CN#PBF be selected over the LM2900N or LM3900N?

A: The LT1058CN#PBF uses J-FET amplifier topology and is selected when applications require extremely low input bias current (7 pA versus 30 nA), higher gain bandwidth product (5 MHz versus 2.5 MHz), or reduced power consumption (1.7 mA total supply current versus 6.2 mA). The LT1058CN#PBF is not suitable for applications requiring supply voltages below 20 V or operating temperatures below 0°C.

Q: Are all substitute parts RoHS compliant?

A: Yes. The LM2900N, LM2900DR, LM3900N, and LT1058CN#PBF are all ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the significance of the LM2900N being classified as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of the LM2900N. Existing inventory is limited (2,785 pieces), and no future production is planned. For new designs or long-term production requirements, selection of an Active product such as LM2900DR, LM3900N, or LT1058CN#PBF is recommended to ensure supply continuity.

Q: Can the LM3900N be used in applications requiring the full -40°C to 85°C temperature range of the LM2900N?

A: No. The LM3900N operating temperature range is 0°C to 70°C. Applications requiring operation below 0°C or above 70°C must use the LM2900N or LT1058CN#PBF. Verify that the LT1058CN#PBF supply voltage range (20 V to 36 V minimum) is compatible with application requirements before selection.

Q: What is the impact of reduced output current in the LM3900N compared to the LM2900N?

A: The LM3900N provides 10 mA output current per channel versus 18 mA for the LM2900N. This reduction affects maximum load-driving capability. Applications requiring output currents exceeding 10 mA per channel must use the LM2900N or LM2900DR. Verify load impedance and current requirements before substitution.