Texas Instruments LM2900NE4

Overview

LM2900NE4 from Texas Instruments is a quadruple Norton operational amplifier IC designed for single-supply operation across –40°C to 85°C. It delivers 2.5 MHz unity-gain bandwidth, 2.8 V/mV large-signal differential voltage amplification, and rail-to-rail output swing up to 29.5 V with 30 V supply. Used in industrial sensor signal conditioning, automotive body control modules, and legacy analog power supply feedback loops.

For engineers reviewing the LM2900NE4 datasheet, LM2900NE4 pinout, LM2900NE4 application, or LM2900NE4 equivalent, this page provides verified electrical parameters, N-package terminal mapping, temperature-rated performance boundaries, and functionally comparable alternatives for cost-optimized or extended-temperature redesigns.

Technical Context

The LM2900NE4 implements a current-differencing (Norton) architecture where input currents-not voltages-are compared at the inverting node, enabling robust operation near ground on single supplies. Its internal 200 µA constant-current generator sets mirror gain (0.9–1.1 µA/µA) and defines output current sourcing/sinking capability.

Each of the four amplifiers features independent frequency compensation, output short-circuit protection, and clamp diodes limiting negative input swing to –0.3 V. Input bias current remains stable at ≤300 nA over full temperature range, and supply current stays near 6.2–10 mA regardless of VCC from 4.5 V to 32 V.

Key Specifications

Pinout & Package

LM2900NE4 is housed in a 14-pin plastic dual in-line package (PDIP), designated N package per TI drawing. The package has 0.3-inch body width, through-hole mounting, and RoHS-compliant NiPdAu lead finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Norton operational amplifier applications.

Compared with LM3900N, LM2900NE4 extends usable ambient range by 40°C for harsh environments; compared with LM2900DR, it retains through-hole reliability and hand-soldering compatibility while sacrificing PCB space efficiency.

Availability

LM2900NE4 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, automotive body control modules, and legacy power supply feedback requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for LM2900NE4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a U.S.-based semiconductor company founded in 1930, specializing in analog, embedded processing, and digital signal technologies with global manufacturing and distribution infrastructure.

The LM2900NE4 belongs to TI's legacy analog amplifier portfolio, originally developed for robust single-supply industrial instrumentation and later standardized for cross-manufacturer interoperability with National Semiconductor's LM2900.

FAQ

What is the maximum supply voltage for LM2900NE4?

The absolute maximum supply voltage for LM2900NE4 is 36 V, but the recommended operating range is 4.5 V to 32 V under normal conditions. Exceeding 32 V risks exceeding internal power dissipation limits, especially at elevated temperatures. TI specifies that short circuits from outputs to VCC-not ground-can cause destructive heating, so system-level protection must consider both rails.

Does LM2900NE4 support dual-supply operation?

Yes, LM2900NE4 supports dual-supply operation with VCC+ ranging from 2.2 V to 16 V and VCC– from –2.2 V to –16 V. However, its Norton architecture is optimized for single-supply use: input clamping diodes reference to ground, and output swing is asymmetric-high-level output reaches within 0.5 V of VCC, while low-level drops to 0.09 V above ground. Dual-supply use is valid but offers no performance advantage over single-supply mode.

What is the input bias current specification for LM2900NE4 over temperature?

The input bias current for LM2900NE4 is guaranteed ≤300 nA across the full operating temperature range of –40°C to +85°C. At 25°C, typical value is 30 nA, but design margin must account for worst-case 300 nA to ensure predictable offset behavior in high-impedance feedback networks. This parameter applies specifically to the inverting input; non-inverting input bias is internally mirrored and tracked.

Can LM2900NE4 drive a 2 kΩ load to rail?

LM2900NE4 can drive a 2 kΩ load to within 0.09 V of ground (low-level) and 0.5 V below VCC (high-level) under standard test conditions. At VCC = 30 V, high-level output reaches 29.5 V-confirming near-rail capability. However, output current capability degrades above 25°C; at 85°C, VOL rises to 0.2 V and VOH drops slightly due to increased internal resistance. Full rail-to-rail swing requires load >10 kΩ.

Is LM2900NE4 pin-compatible with LM3900N?

Yes, LM2900NE4 and LM3900N share identical PDIP-14 packaging, pinout, and electrical functionality-both are drop-in replacements in hardware. The sole functional difference is temperature rating: LM2900NE4 operates from –40°C to +85°C, while LM3900N is limited to 0°C to +70°C. No PCB changes are required when substituting LM2900NE4 for LM3900N in existing designs, though thermal validation is advised for cold-start or high-ambient scenarios.