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LM324A

ACTIVE

Quad, 30-V, 1.2-MHz, 3-mV offset voltage operational amplifier

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Data sheet

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LM324B ACTIVE Quad, 36V 1.2MHz 3mV offset voltage operational amplifier Drop-in upgrade with improved performance, wider temperature range and lower 1ku price

LM324A

ACTIVE
Data sheet Order now

Product details

Number of channels 4 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 30 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 3 Rail-to-rail In to V- GBW (typ) (MHz) 1.2 Slew rate (typ) (V/µs) 0.5 Vos (offset voltage at 25°C) (max) (mV) 3 Iq per channel (typ) (mA) 0.175 Vn at 1 kHz (typ) (nV√Hz) 35 Rating Catalog Operating temperature range (°C) 0 to 70 Offset drift (typ) (µV/°C) 7 Features Standard Amps Input bias current (max) (pA) 100000 CMRR (typ) (dB) 80 Iout (typ) (A) 0.04 Architecture Bipolar Input common mode headroom (to negative supply) (typ) (V) 0 Input common mode headroom (to positive supply) (typ) (V) -1.5 Output swing headroom (to negative supply) (typ) (V) 0.005 Output swing headroom (to positive supply) (typ) (V) -2
Number of channels 4 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 30 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 3 Rail-to-rail In to V- GBW (typ) (MHz) 1.2 Slew rate (typ) (V/µs) 0.5 Vos (offset voltage at 25°C) (max) (mV) 3 Iq per channel (typ) (mA) 0.175 Vn at 1 kHz (typ) (nV√Hz) 35 Rating Catalog Operating temperature range (°C) 0 to 70 Offset drift (typ) (µV/°C) 7 Features Standard Amps Input bias current (max) (pA) 100000 CMRR (typ) (dB) 80 Iout (typ) (A) 0.04 Architecture Bipolar Input common mode headroom (to negative supply) (typ) (V) 0 Input common mode headroom (to positive supply) (typ) (V) -1.5 Output swing headroom (to negative supply) (typ) (V) 0.005 Output swing headroom (to positive supply) (typ) (V) -2
PDIP (N) 14 181.42 mm² 19.3 x 9.4 SOIC (D) 14 51.9 mm² 8.65 x 6 SOP (NS) 14 79.56 mm² 10.2 x 7.8 SSOP (DB) 14 48.36 mm² 6.2 x 7.8 TSSOP (PW) 14 32 mm² 5 x 6.4
  • New LM324B and LM2902B
  • B versions are drop-in replacements for all versions of LM224, LM324, and LM2902
  • Improved specifications of B version
    • Supply range: 3V to 36V (B, BA versions)
    • Low input offset voltage: ±2mV (BA version) / 3mV (B version)
    • ESD rating: 2kV (HBM), 1.5kV (CDM)
    • EMI rejection: integrated RF and EMI filter
    • Low input bias current: 50nA maximum (across –40°C to 125°C)
  • Common-mode input voltage range includes V–
  • Input voltage differential can be driven up to supply voltage
  • For dual B versions, see LM358B and LM2904B
  • New LM324B and LM2902B
  • B versions are drop-in replacements for all versions of LM224, LM324, and LM2902
  • Improved specifications of B version
    • Supply range: 3V to 36V (B, BA versions)
    • Low input offset voltage: ±2mV (BA version) / 3mV (B version)
    • ESD rating: 2kV (HBM), 1.5kV (CDM)
    • EMI rejection: integrated RF and EMI filter
    • Low input bias current: 50nA maximum (across –40°C to 125°C)
  • Common-mode input voltage range includes V–
  • Input voltage differential can be driven up to supply voltage
  • For dual B versions, see LM358B and LM2904B

The LM324B and LM2902B devices are the next-generation versions of the industry-standard operational amplifiers (op amps) LM324 and LM2902, which include four high-voltage (36V) op amps. These devices provide outstanding value for cost-sensitive applications,

with features including low offset (600µV, typical), common-mode input range to ground, and high differential input voltage capability.

The LM324B and LM2902B are unity-gain stable and achieve a low offset voltage maximum of 3mV (2mV maximum for LM324BA and LM2902BA) and quiescent current of 240µA per amplifier (typical). High ESD (2kV HBM and 1.5kV CDM) and integrated EMI and RF filters enable the LM324B and LM2902B devices to be used in the most rugged, environmentally challenging applications.

The LM324B and LM2902B can drop-in replace all versions of the LM224, LM324, and LM2902 devices.

The LM324B and LM2902B devices are the next-generation versions of the industry-standard operational amplifiers (op amps) LM324 and LM2902, which include four high-voltage (36V) op amps. These devices provide outstanding value for cost-sensitive applications,

with features including low offset (600µV, typical), common-mode input range to ground, and high differential input voltage capability.

The LM324B and LM2902B are unity-gain stable and achieve a low offset voltage maximum of 3mV (2mV maximum for LM324BA and LM2902BA) and quiescent current of 240µA per amplifier (typical). High ESD (2kV HBM and 1.5kV CDM) and integrated EMI and RF filters enable the LM324B and LM2902B devices to be used in the most rugged, environmentally challenging applications.

The LM324B and LM2902B can drop-in replace all versions of the LM224, LM324, and LM2902 devices.
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Technical documentation

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Type Title Date
* Data sheet LMx24, LMx24x, LMx24xx, LM2902, LM2902x, LM2902xx, LM2902xxx Quadruple Operational Amplifiers datasheet (Rev. AC) PDF | HTML 05 Mar 2024
Application note Application Design Guidelines for LM324 and LM358 Devices (Rev. B) PDF | HTML 19 Jul 2023
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

AMP-PDK-EVM — Amplifier performance development kit evaluation module

The amplifier performance development kit (PDK) is an evaluation module (EVM) kit to test common operational amplifier (op amp) parameters and is compatible with most op amps and comparators. The EVM kit offers a main board with several socketed daughtercard options to fit package needs, allowing (...)

User guide: PDF | HTML
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Simulation model

LMx24B_LM2902B PSPICE Model

SGLM038.ZIP (3 KB) - PSpice Model
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Simulation model

LMx24B_LM2902B TINA-TI Macro

SGLM039.ZIP (4 KB) - TINA-TI Spice Model
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Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
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Design tool

CIRCUIT060013 — Inverting amplifier with T-network feedback circuit

This design inverts the input signal, VIN, and applies a signal gain of 1000 V/V or 60 dB. The inverting amplifier with T-feedback network can be used to obtain a high gain without a small value for R4 or very large values for the feedback resistors.
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Design tool

CIRCUIT060015 — Adjustable reference voltage circuit

This circuit combines an inverting and non-inverting amplifier to make a reference voltage adjustable from the negative of the input voltage up to the input voltage. Gain can be added to increase the maximum negative reference level.
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Design tool

CIRCUIT060074 — High-side current sensing with comparator circuit

This high-side, current sensing solution uses one comparator with a rail-to-rail input common mode range to create an over-current alert (OC-Alert) signal at the comparator output (COMP OUT) if the load current rises above 1 A. The OC-Alert signal in this implementation is active low. So when the (...)
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
User guide: PDF
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Reference designs

PMP9491 — Audio Boom Box/Portable Speaker Reference Design with Efficient Boost Converter.

PMP9491 is a 30W highly efficient and compact Portable Speaker/Audio Boom Box reference Design which can be used in 15W +15W Stereo or 30W Woofer Applications. The Power Source for the Design is 1 or 2 Li ion in Series . The design is broadly divided into three main stages:
  1. Highly efficient (...)
Test report: PDF
Schematic: PDF
Reference designs

PMP9484 — Highly Efficient and Compact 100-W Automotive Amplifier Reference Design with Boost Converter

PMP9484 is a 100W highly efficient and compact automotive amplifier reference design which can be used in 50W +50W stereo or 100W woofer applications.  The design is broadly divided into three main stages:
1.) Highly efficient single-phase synchronous boost converter using the LM5122 controller (...)
Test report: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
PDIP (N) 14 Ultra Librarian
SOIC (D) 14 Ultra Librarian
SOP (NS) 14 Ultra Librarian
SSOP (DB) 14 Ultra Librarian
TSSOP (PW) 14 Ultra Librarian
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