LM3900N Equivalent & Substitute Parts Reference

Part Overview

The LM3900N is a general-purpose operational amplifier integrated circuit manufactured by Texas Instruments, configured as a 4-circuit device in a 14-pin DIP package. This component is classified as Active product status with full production availability (16,134 units in stock). The LM3900N operates across a wide supply voltage range of 4.4V to 32V and is suitable for applications requiring general-purpose amplification in industrial and commercial environments.

Substitute parts become necessary when the LM3900N reaches end-of-life status, when inventory constraints occur, or when application requirements demand enhanced performance characteristics such as lower input bias current, higher gain-bandwidth product, or extended operating temperature ranges. The parts listed below maintain functional compatibility through equivalent package configuration and circuit count while offering alternative electrical performance profiles.

Substiute Parts

LM3900N

Texas InstrumentsIn Stock: 16169LM3900N Datasheet

Current PartRFQ

LM2900N

Texas InstrumentsIn Stock: 2864LM2900N Datasheet

MFR RecommendedRFQ

LT1058CN#PBF

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

MFR RecommendedRFQ

OP482GPZ

Analog Devices Inc.In Stock: 1478OP482GPZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the LM3900N is determined by the following critical parameters: identical package configuration (14-DIP), matching circuit count (4 circuits), compatible supply voltage ranges, and through-hole mounting type. All substitute parts maintain the 14-PDIP package specification and support 4-circuit operational amplifier configurations.

The substitute parts are grouped into two categories based on amplifier technology:

Category 1: Bipolar General-Purpose Amplifiers The LM2900N maintains identical electrical specifications to the LM3900N, including slew rate (20V/µs), gain-bandwidth product (2.5 MHz), input bias current (30 nA), and supply voltage range (4.4V to 32V). The primary distinction is extended operating temperature range (-40°C to 85°C) and increased output current capability (18 mA per channel versus 10 mA). Product status is Last Time Buy, indicating limited future availability.

Category 2: J-FET Input Amplifiers The LT1058CN#PBF and OP482GPZ represent J-FET input technology alternatives. These devices feature significantly lower input bias current (7 pA and 3 pA respectively, compared to 30 nA), higher gain-bandwidth products (5 MHz and 4 MHz), and lower supply current consumption. The OP482GPZ operates across a lower minimum supply voltage (9V) and includes extended temperature range (-40°C to 85°C). The LT1058CN#PBF requires minimum 20V supply voltage.

Parameter Comparison

Engineering Selection Recommendations

LM2900N Selection Criteria

The LM2900N is recommended as a direct substitute when the LM3900N reaches end-of-life or inventory depletion. This device maintains identical electrical performance specifications (slew rate, gain-bandwidth product, input bias current, and supply voltage range) with enhanced output current capability (18 mA versus 10 mA per channel) and extended operating temperature range (-40°C to 85°C versus 0°C to 70°C). Both devices are ROHS3 compliant and manufactured by Texas Instruments. Current inventory status for LM2900N is 2,785 units. Note that LM2900N carries Last Time Buy product status, indicating this substitute has limited long-term availability.

LT1058CN#PBF Selection Criteria

The LT1058CN#PBF is suitable for applications requiring ultra-low input bias current (7 pA) and higher gain-bandwidth product (5 MHz). This J-FET input device is manufactured by Analog Devices Inc. and maintains Active product status with 2,588 units in stock. The LT1058CN#PBF requires minimum supply voltage of 20V, which restricts its use in low-voltage applications below this threshold. Operating temperature range matches the LM3900N (0°C to 70°C). Supply current consumption is significantly reduced (1.7mA total versus 6.2mA), making this device suitable for power-constrained applications. ROHS3 compliance is maintained.

OP482GPZ Selection Criteria

The OP482GPZ offers the lowest input bias current (3 pA) and lowest supply current consumption (210µA total), combined with Active product status and extended operating temperature range (-40°C to 85°C). This J-FET input device from Analog Devices Inc. operates across a lower minimum supply voltage (9V) compared to the LT1058CN#PBF, providing greater flexibility in low-voltage circuit designs. Current inventory is 1,372 units. The OP482GPZ is ROHS3 compliant. Slew rate (9V/µs) is lower than the LM3900N, which may impact high-frequency applications.

Frequently Asked Questions (FAQ)

Q: Can the LM2900N be used as a direct replacement for the LM3900N in existing circuit designs?

A: Yes. The LM2900N maintains identical package configuration (14-DIP), circuit count (4 circuits), and core electrical specifications (slew rate, gain-bandwidth product, input bias current, supply voltage range). Pin-for-pin compatibility is maintained. The enhanced output current capability (18 mA versus 10 mA) and extended temperature range (-40°C to 85°C) represent improvements over the LM3900N. However, LM2900N carries Last Time Buy status, indicating limited future availability.

Q: What are the key differences between bipolar and J-FET input amplifiers in this comparison?

A: Bipolar devices (LM3900N, LM2900N) feature input bias current in the nanoampere range (30 nA), while J-FET devices (LT1058CN#PBF, OP482GPZ) feature input bias current in the picoampere range (7 pA and 3 pA respectively). J-FET devices consume significantly less supply current and offer higher gain-bandwidth products. Bipolar devices provide higher slew rates. Selection depends on application requirements for input impedance, power consumption, and frequency response.

Q: Are there supply voltage restrictions when substituting with J-FET alternatives?

A: Yes. The LT1058CN#PBF requires minimum 20V supply voltage, which eliminates its use in applications operating below this threshold. The OP482GPZ operates at minimum 9V supply voltage, providing greater flexibility. The LM3900N and LM2900N operate at minimum 4.4V supply voltage. Verify supply voltage compatibility before selecting J-FET alternatives for low-voltage applications.

Q: Do all substitute parts maintain RoHS3 compliance?

A: Yes. All parts listed (LM3900N, LM2900N, LT1058CN#PBF, OP482GPZ) are ROHS3 compliant and REACH unaffected. All devices carry ECCN classification EAR99 and HTSUS code 8542.33.0001.

Q: What is the significance of "Last Time Buy" status for the LM2900N?

A: Last Time Buy status indicates that the manufacturer has announced end-of-life for this device. While current inventory (2,785 units) is available, future procurement may not be possible. This status does not affect the technical performance or compatibility of the LM2900N as a substitute, but long-term supply chain planning should account for this limitation.

Q: Which substitute part offers the lowest power consumption?

A: The OP482GPZ offers the lowest supply current consumption at 210µA total (across 4 channels), compared to 6.2mA for the LM3900N and LM2900N, and 1.7mA for the LT1058CN#PBF. The OP482GPZ is the optimal choice for battery-powered or power-constrained applications.

Q: Can the OP482GPZ be used in high-frequency applications?

A: The OP482GPZ has a slew rate of 9V/µs and gain-bandwidth product of 4 MHz, which are lower than the LM3900N (20V/µs slew rate, 2.5 MHz gain-bandwidth product). For applications requiring high slew rate performance, the LM3900N or LM2900N are more suitable. The OP482GPZ is appropriate for moderate-frequency applications where low power consumption and ultra-low input bias current are prioritized.