LM324NS-MAKS - Quad 1.2 MHz Op Amp | Texas Instruments
Référence : LM324NS-MAKS ✓ ActifLM324NS-MAKS Présentation
An operational amplifier is an analog IC that amplifies the voltage difference between its non-inverting and inverting inputs. The LM324 belongs to the general-purpose amplifier hierarchy, combining four amplifiers in one package. It is commonly used where low offset, adequate gain bandwidth, input-stage flexibility, and wide supply flexibility are more important than rail-to-rail operation or very low noise.
Each of the four amplifier sections operates from a single positive supply or a split supply arrangement. The internal architecture supports common-mode input behavior appropriate for many sensor, transducer, and control-signal interfaces. Output current capability of 30 mA allows the device to drive moderate loads while also operating as a unity-gain buffer in many practical circuits.
The LM324 family is valued for its combination of four amplifier sections, 1.2 MHz gain-bandwidth product, and 30 mA output drive in a 14-pin SOIC. Designers should account for the input and output common-mode ranges, which do not reach the negative supply rail in the same way as rail-to-rail input amplifiers. A bypass capacitor near the supply pins is recommended to reduce supply-related noise and improve transient response.
Typical uses include environmental sensors, low-cost audio and communication interfaces, analog control loops, instrumentation buffers, active filters, and general-purpose signal conversion. The device can also serve in educational, industrial, and consumer designs where a stable quad-amplifier package simplifies board layout and reduces component count.
For new layouts, place the decoupling capacitor close to the positive supply pin and route the ground return directly to the ground pin. Use the pin-description table and typical application circuits in the manufacturer datasheet when assigning PCB tracks, especially around input, output, and supply connections.
Alternatives de remplacement direct pour LM324NS-MAKS — 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 LM324NS-MAKS (même facteur de forme et même empreinte) — différant par Mounting Type, Amplifier Type, Package, Device Type, Gain-Bandwidth Product.
LM324NS
✅ Remplacement directContactez-nous pour le prix
Voir la fiche technique →LM324ADR2G
✅ Remplacement directContactez-nous pour le prix
Voir la fiche technique →LM324BDR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LM324NG
✅ Remplacement directContactez-nous pour le prix
Voir la fiche technique →LM324DR
✅ Remplacement directContactez-nous pour le prix
Voir la fiche technique →LM324NS-MAKS Valeurs maximales et caractéristiques électriques
| Amplifier Type | Quad general-purpose operational amplifier |
| Number of Amplifier Sections | 4 circuits |
| Gain-Bandwidth Product | 1.2 MHz |
| Courant de sortie maximal | 30 mA |
| Boîtier | 14-pin SOIC (14-SO) |
| Type de montage | Surface mount |
Configuration des broches de LM324NS-MAKS
| Broche 1 | OUT1 — Amplifier 1 output |
| Broche 2 | -IN1 — Amplifier 1 inverting input |
| Broche 3 | +IN1 — Amplifier 1 non-inverting input |
| Broche 4 | V- — Negative supply or ground connection |
| Broche 5 | +IN2 — Amplifier 2 non-inverting input |
| Broche 6 | -IN2 — Amplifier 2 inverting input |
| Broche 7 | OUT2 — Amplifier 2 output |
| Broche 8 | OUT3 — Amplifier 3 output |
| Broche 9 | -IN3 — Amplifier 3 inverting input |
| Broche 10 | +IN3 — Amplifier 3 non-inverting input |
| Broche 11 | V+ — Positive supply connection |
| Broche 12 | +IN4 — Amplifier 4 non-inverting input |
| Broche 13 | -IN4 — Amplifier 4 inverting input |
| Broche 14 | OUT4 — Amplifier 4 output |
Applications typiques
LM324NS-MAKS convient pour 6 applications: Sensor Signal Conditioning, Industrial Control Loops, Active Filters and Buffers, Power-Supply Feedback and Monitoring, Audio and Low-Frequency Buffering, Data Acquisition and Instrumentation.
Sensor Signal Conditioning
The LM324NS-MAKS fits sensor conditioning because its four general-purpose amplifier sections can buffer, scale, and combine low-frequency sensor signals in one 14-pin SOIC package. Each section offers 1.2 MHz gain-bandwidth product, which is appropriate for many temperature, light, pressure, and position interfaces operating well below that bandwidth. The 30 mA output-current capability also permits moderate load driving. Designers should verify that the sensor output remains within the amplifier input common-mode range and that offset and bias requirements match the measurement accuracy budget.
Recommandé
Industrial Control Loops
The LM324NS-MAKS is well suited to industrial control loops where four amplifier channels reduce both component count and board area. Its 1.2 MHz gain-bandwidth product supports error-amplifier and active-feedback configurations, while 30 mA output drive can support moderate actuator-interface stages. A split-supply configuration provides a straightforward reference at circuit ground. The design must maintain the input and output common-mode ranges, and supply bypassing should be placed close to pins 11 and 4 for stable analog performance.
Recommandé
Active Filters and Buffers
The four amplifier sections in the LM324NS-MAKS allow implementation of active filters, impedance buffers, and gain stages without using four separate packages. A 1.2 MHz gain-bandwidth product is suitable for many audio-band, communications-interface, and instrumentation applications, though filter design must account for the amplifier slew rate and open-loop response. The 14-pin SOIC arrangement also keeps routing compact. Use the manufacturer typical circuits as a starting point and verify stability against the selected closed-loop gain and capacitive loading.
Recommandé
Power-Supply Feedback and Monitoring
The LM324NS-MAKS can implement power-supply error amplifiers, current-sense amplifiers, and output-voltage monitors where its four channels and 1.2 MHz gain-bandwidth product are adequate. The amplifier operates from single- or split-supply arrangements, allowing it to monitor rails referenced to ground. Its output current capability of 30 mA is sufficient for driving comparator inputs and moderate feedback networks. Designers should verify the common-mode range at the worst-case input voltage, especially when monitoring a low output rail near ground.
Recommandé
Audio and Low-Frequency Buffering
The LM324NS-MAKS is appropriate for line-level audio buffering, mixing, and low-frequency amplification where rail-to-rail operation is unnecessary. Four channels in one 14-pin SOIC support left-right and auxiliary signal paths, while the 1.2 MHz gain-bandwidth product covers the audio band with useful headroom. The 30 mA output capability permits moderate capacitive-load drive. Keep the signal within the input common-mode range, observe the output-swing limits, and place the supply bypass capacitor adjacent to the device for reduced channel-to-channel coupling.
Recommandé
Data Acquisition and Instrumentation
The LM324NS-MAKS supports low-cost data-acquisition front ends by providing four channels of gain, buffering, and level shifting in a single package. A 1.2 MHz gain-bandwidth product accommodates many multiplexed sensor and transducer signals sampled at moderate rates, while 30 mA output drive simplifies driving an ADC input or comparator stage. Accurate designs must account for input bias current, offset voltage, and common-mode limits. High-impedance sources may require guarding or biasing to reduce sensitivity to input bias current.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour LM324NS-MAKS — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | LM324NS | LM324ADR | LM324BDR | LM324NG | LM324DR |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | onsemi | onsemi |
| Package | 14-SO | 14-SO - same | 14-SO - same | 14-SO - same | 14-SO - same | 14-SO - same |
| Amplifier Sections | 4 | 4 | 4 | 4 | 4 | 4 |
| Mounting Type | Surface mount | Surface mount | Surface mount | Surface mount | Surface mount | Surface mount |
| Application Classification | General-purpose instrumentation and buffer amplifier | General-purpose instrumentation and buffer amplifier | General-purpose amplifier family | General-purpose amplifier family | General-purpose amplifier family | General-purpose amplifier family |
Principaux différenciateurs
- Four general-purpose amplifiers in one package (vs LM2902DR)
- Higher gain-bandwidth product than the dual-site comparator alternatives (vs LM393ADR)
- Broad 14-SO drop-in sourcing choices (vs LM324NG)
- Single-package integration for multi-channel instrumentation (vs LM2903DR)
Notes de conception
Place the supply bypass capacitor immediately adjacent to pin 11 and route pin 4 directly to the ground reference. Keep amplifier input and output traces away from the supply-capacitor return path to reduce channel coupling. The 14-pin SOIC footprint leaves little room for routing mistakes, so confirm the pin-1 orientation against the package marking before placing the device.
Use the manufacturer's typical application circuits to select feedback resistors and compensation values. The 1.2 MHz gain-bandwidth product makes this device suitable for moderate-frequency signal conditioning, but high closed-loop gain with capacitive loading can reduce stability margin. Check the input and output common-mode ranges against the actual signal excursion rather than assuming the full supply range is usable.
For single-supply operation, the non-inverting input and output require headroom above ground. Bias a bipolar input near mid-supply when the source cannot provide that offset. For split supplies, connect the negative supply pin to the negative rail and use the circuit ground as the signal reference. Confirm the absolute maximum and recommended supply conditions in the manufacturer datasheet before applying power.
Do not assume the LM324NS-MAKS is a rail-to-rail amplifier. Input and output swing limits can restrict low-side operation, especially with a single low-voltage supply. Also verify the four-channel pin mapping before reusing a board across different manufacturers; matching the 14-SO package alone does not guarantee identical offset, bias, noise, temperature grade, or special-function pins.
Informations de conformité
Compliance attributes are not stated in the available manufacturer and distributor product information. Confirm RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals declarations for the exact ordering configuration before release.
