LM324J - Quad 32 V 1 MHz Op Amp | Texas Instruments
Référence : LM324J ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $19.8825 | $19,88 |
| 10 | $19.8825 | $198,83 |
| 100 | $19.8825 | $1 988,25 |
| 500 | $19.8825 | $9 941,25 |
| 1 000 | $19.8825 | $19 882,50 |
LM324J Présentation
An operational amplifier is an active analog component that uses high open-loop gain and negative feedback to amplify the difference between two input signals. In the broader electronics hierarchy, an op amp belongs to amplifier ICs and analog signal-chain devices. The LM324 family supports common general-purpose tasks including voltage buffering, summing, comparison, filtering, transducer conditioning, and gain stages, provided the designer observes its supply, input, output, and stability limits.
Verified distributor information identifies the LM324J as a standard, general-purpose, four-circuit amplifier in a 14-CDIP package. The Mouser listing further identifies it as a military quad operational amplifier with 32 V operation and 1 MHz bandwidth. Those confirmed points establish the device’s most important selection criteria: four integrated channels, wide single-supply capability, roughly 1 MHz bandwidth, and a through-hole ceramic DIP footprint for higher-temperature or ruggedized legacy-style assemblies.
Each amplifier shares the same positive supply, negative supply, and ground pins on the 14-pin package. The common architecture saves board area and reduces package count compared with four separate single op-amp ICs. It also makes rail planning and decoupling straightforward: the designer must ensure that all four channels remain within their electrical limits simultaneously and that power-supply bypass capacitors are placed close to the package supply pins.
Typical uses include industrial control interfaces, sensor signal conditioning, low-frequency active filters, audio preamplification, instrumentation, power-supply feedback, and general mixed-signal embedded systems. The 1 MHz bandwidth favors low- to moderate-frequency signals rather than high-speed video, RF, or precision signal-path work. For those applications, verify exact gain-bandwidth, slew-rate, input-offset, output-current, and temperature limits against the official LM324 manufacturer documentation before production release.
The principal design consideration is ensuring adequate output-voltage headroom and stability at the selected supply voltage, load, and gain. Because the verified excerpts do not publish exact capacitor values, common-mode limits, output-current ratings, or full pin names, those details remain deliberately unstated rather than guessed. This page combines verified sourcing data, package information, application guidance, and a conservative interpretation of the LM324J’s general-purpose role.
Its differentiation is practical rather than headline performance: one 14-CDIP package supplies four general-purpose amplifier channels, while the 32 V and 1 MHz figures cover common industrial and embedded signal-conditioning needs. For an existing 14-pin LM324-family footprint, engineers should still compare the exact suffix, grade, pinout, and operating-temperature limits before approving a substitute.
Alternatives de remplacement direct pour LM324J — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec LM324J (même facteur de forme et même empreinte) — différant par Package, Mounting Type, Amplifier Type, Gain Bandwidth Product, Packaging.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
LM124J
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LM324J
✅ Remplacement direct✓ En stock
$19.8825 / unité
Voir la fiche technique →LM324N
✅ Remplacement direct✓ En stock
Contactez-nous pour le prix
Voir la fiche technique →LM324ADR2G
✅ Remplacement direct✓ En stock
$0.18 / unité
Voir la fiche technique →LM324BAIDR
✅ Remplacement direct✓ En stock
$0.15 / unité
Voir la fiche technique →LM324J Valeurs maximales et caractéristiques électriques
| Amplifier Type | General-purpose operational amplifier |
| Number of Amplifiers | 4 channels |
| Maximum Supply Voltage | 32 V |
| Gain-Bandwidth Product | 1 MHz |
| Supply Configuration | Single-supply operation |
| Power Class | Low power |
| Device Type | Military quad operational amplifier |
| Boîtier | 14-CDIP |
| Nombre de broches | 14 pins |
| Type de montage | Through-hole |
| Package Material | Ceramic |
Guide de configuration des broches du LM324J ceramic
Configuration des broches du LM324J (boîtier ceramic). Ce composant analogique comporte des broches d'entrée, de sortie et d'alimentation. Consultez la fiche technique du fabricant pour les configurations des broches d'annulation d'offset, de compensation et d'activation. Idéal pour le conditionnement de signaux et les circuits amplificateurs.
Aucune donnée de brochage détaillée disponible pour LM324J.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
LM324J convient pour 6 applications: Industrial Sensor Signal Conditioning, Low-Frequency Active Filtering, Embedded Control Interfaces, Audio Preamplification, Power-Supply Feedback and Monitoring, Test and Measurement Buffering.
Industrial Sensor Signal Conditioning
The LM324J fits four-channel sensor conditioning because it combines four general-purpose amplifiers, 32 V maximum supply capability, and a 1 MHz gain-bandwidth product in one 14-CDIP package. Each amplifier can support a low-frequency gain or impedance-conversion stage, such as buffering a sensor before an ADC. The ceramic through-hole package is also appropriate for assemblies that value ruggedized insertion and serviceability. Designers should verify exact input common-mode range, output swing, offset, and bias-current limits at the selected supply voltage before using the device near a rail.
Recommandé
Low-Frequency Active Filtering
The four integrated amplifiers in the LM324J allow a compact active-filter implementation using multiple feedback or Sallen-Key stages without requiring four separate packages. Its verified 1 MHz gain-bandwidth product is suitable for many audio-band and low-frequency control signals, while the 32 V maximum supply supports higher-voltage analog systems. Stability, gain, component tolerances, and permissible output loading determine whether each topology is suitable. Verify the exact slew rate and common-mode range before using very small resistor values or signals near the supply rails.
Recommandé
Embedded Control Interfaces
LM324J is useful when a controller board needs several independent general-purpose analog channels for actuator drive, feedback comparison, level conditioning, or error amplification. Its four-amplifier arrangement reduces package count, and the verified single-supply operation simplifies rail planning for embedded systems. The 1 MHz bandwidth is usually more than adequate for slow control loops but does not imply precision or high-speed performance. Validate output-current demand, saturation recovery, input offset, supply-current budget, and temperature drift for the intended industrial or control environment.
Recommandé
Audio Preamplification
The LM324J can serve as a general-purpose audio preamplifier or intermediate buffer because it provides four channels, single-supply operation, and a verified 1 MHz bandwidth. The wide 32 V maximum supply rating accommodates many conventional audio and control-voltage environments, although the actual signal range is constrained by common-mode and output-swing limits. Use negative feedback to set gain and keep the signal within the linear operating region. For high-fidelity or low-noise audio, compare the LM324 input-noise and distortion specifications with a dedicated audio amplifier.
Recommandé
Power-Supply Feedback and Monitoring
A quad op amp provides flexible space for error amplification, output sensing, fault comparison, and auxiliary signal conditioning within a power-control board. LM324J is attractive when the design operates from a single supply up to the verified 32 V maximum and needs through-hole serviceability. Its 1 MHz bandwidth is generally adequate for slow regulation and monitoring loops, but loop compensation and control-loop stability require separate analysis. Check output-current capability and saturation behavior against the load, particularly when driving a transistor or supervisory stage rather than only a high-impedance feedback node.
Recommandé
Test and Measurement Buffering
The LM324J can buffer instrument inputs, amplify differential sensor signals, and form intermediate gain stages in a general-purpose measurement system. Four channels permit reuse across multiple test points, while the 1 MHz bandwidth covers many low-speed instrumentation signals. Input bias current, offset voltage, noise, common-mode range, and output accuracy are more important than headline bandwidth when driving a precision ADC. Confirm those parameters from the official datasheet, use a clean low-noise supply, and keep high-impedance input routing short and guarded against leakage.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour LM324J — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | LM124J | LM324J | LM324N | LM324A | LM324B |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Number of Amplifiers | 4 circuits | 4 channels | 4 circuits | 4 circuits | 4 circuits | 4 circuits |
Principaux différenciateurs
- Four-channel integration in a 14-CDIP package (vs LM124J)
- Established LM324 performance target (vs LM124J)
- Single-supply general-purpose operation (vs LM324N)
Notes de conception
Place a ceramic bypass capacitor close to the LM324J positive-supply and ground pins, and add local bulk decoupling where the board supply is shared by other analog and digital loads. The verified data establishes single-supply operation and a 32 V maximum rating but does not specify a required capacitance. Select the value from the official datasheet and board-level power-integrity analysis, then verify the capacitor’s effective capacitance at the actual DC bias and temperature.
Route each amplifier’s feedback network close to its corresponding package pins and avoid sharing long, high-impedance paths between channels. Keep the 14-CDIP leads on a through-hole footprint consistent with the exact J package, maintain adequate clearance from nearby heat sources, and return analog ground through a low-impedance path. Although the LM324J has four channels in one package, supply and ground pins are shared, so simultaneous high-current output activity can couple through common supply impedance.
Do not assume that a 32 V maximum supply rating permits the input or output to swing rail-to-rail. Verify common-mode input range, output swing, output-current capability, and stability against the manufacturer datasheet for the selected supply and load. Also avoid treating LM358, LM2904, or similar quad or dual amplifier families as automatic replacements: same channel count is insufficient unless the package, pinout, and electrical limits all match the existing PCB.
Informations de conformité
The verified excerpts identify LM324J as a military quad operational amplifier but do not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements. Compliance status is therefore recorded as unknown rather than inferred.
