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Texas Instruments LM324NSR — Analog & Data Acquisition

LM324NSR Quad General Purpose Op-Amp, 1.2 MHz, 14-SOIC

MPNLM324NSR
Active

Texas Instruments LM324NSR, quad general-purpose op-amp, 1.2 MHz gain bandwidth, 0.5 V/µs slew rate, 3 V to 30 V supply, 14-SOIC package, 0°C to 70°C operating temperature.

$0.4700Ref. price · indicative, final on quote
Packaging14-SOIC (0.209", 5.30mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LM324NSR specifications
ParameterValue
MountingSurface Mount
Amplifier typeGeneral Purpose
Voltage - input offset3 mV
Voltage - supply span30 V
Current - supply1.4mA (x4 Channels)
Current - input bias20 nA
Current - output (Channel)30 mA
Operating temperature0°C~70°C(TA)
Gain bandwidth product1.2 MHz
PackageTape & Reel (TR); Cut Tape (CT)
Slew rate0.5V/µs
Case14-SOIC (0.209\", 5.30mm Width)
Number of circuits4

Product details

It packs four independent op-amp circuits into one 14-SO body, each with a 1.2 MHz gain-bandwidth product and a 0.5 V/µs slew rate. The supply range spans 3 V to 30 V single supply or ±1.5 V to ±15 V dual supplies, making it a drop-in for 5 V, 12 V, and 24 V board-level signal conditioning — sensor buffers, active filters, comparator functions, and DC gain stages where speed is secondary to flexibility.

The 1.2 MHz gain-bandwidth product sets the usable closed-loop gain bandwidth: at a gain of 10, expect a -3 dB point around 120 kHz. That is fine for DC measurement, audio-frequency filtering, and slow control loops, but it will round off fast edges in pulse-width modulation or high-speed comparator applications. For a 20 nA input bias current and 3 mV typical input offset, the DC precision is adequate for general-purpose work but not precision instrumentation.

Supply rails and output drive

The 3 V minimum supply lets it run from a single lithium cell or a 3.3 V rail; the 30 V maximum covers 24 V industrial buses with margin. Total quiescent current for all four amplifiers is 1.4 mA typical — about 350 µA per channel — which keeps the power budget modest in multi-channel designs.

The 14-SOIC (5.30 mm body width) is a standard footprint with 1.27 mm pitch. It reflows cleanly with a typical lead-free profile and is easy to hand-solder or hot-air rework.

Frequently asked questions

What is the difference between LM324NSR and LM324N?

The LM324NSR is the surface-mount 14-SOIC version, while the LM324N is the through-hole DIP-14 package. Electrically they are the same quad op-amp with identical 1.2 MHz GBW, 0.5 V/µs slew rate, and 3 V to 30 V supply range. The choice is purely a board-assembly decision — reflow versus wave-solder or socket.

What can I use instead of LM324NSR?

The LM324NSR is a standard quad general-purpose op-amp in 14-SOIC. Many manufacturers offer pin-compatible equivalents — the LM324 series is a widely second-sourced industry standard. For a higher-speed alternative with rail-to-rail output, consider the TLV9351IDCKR (single, 3.5 MHz, 20 V/µs) or TLV9362IDDFR (dual, 10.6 MHz, 25 V/µs), though these are not quad and have different pinouts.