LM324ADR2 - 3-32V Quad 1MHz Op Amp | onsemi
MPN: LM324ADR2 ✓ NakahandaLM324ADR2 Ulas
An operational amplifier is an amplifier IC that uses high open-loop gain and negative feedback to amplify the difference between two input voltages. The quad configuration places four amplifiers in one device, making it widely used in general-purpose signal conditioning, sensor interfaces, filtering, and control systems. Within the electronics hierarchy, an operational amplifier is a linear amplifier IC and a building block for analog signal-processing circuits.
Key characteristics include four amplifier sections, operation from 3 V to 32 V, a 1 MHz gain-bandwidth product, and a 3 mV maximum input offset voltage. The wide supply-voltage range allows the LM324ADR2 to operate from common low-voltage supplies as well as higher-voltage industrial rails. Its internal input-stage characteristics are designed for general-purpose applications rather than high-speed precision signal paths.
The quad architecture consolidates four amplifiers into one 14-pin SOIC package. This can simplify PCB layouts and reduce component count in designs requiring several independent analog channels. Because all four sections share one package and supply connection, engineers must still consider common supply-current variation, thermal behavior, ground routing, and channel-to-channel performance when planning precision measurements.
Typical uses include low-frequency sensor amplification, audio preamplification, DC signal conditioning, active filtering, voltage comparison, and industrial control interfaces. The 1 MHz gain-bandwidth product is appropriate for signals well below its upper bandwidth limit, while the 3-32 V operating range supports both compact low-voltage systems and higher-voltage industrial electronics.
For reliable layout, route analog inputs and feedback connections away from switching-current paths, connect the ground reference properly, and place input and output bypass capacitors close to the device. Avoid using the LM324ADR2 where very low offset, very low bias current, rail-to-rail output swing, or high-speed closed-loop performance is required without first checking the full operating conditions.
This page organizes the LM324ADR2 electrical characteristics, package information, drop-in candidates, application guidance, and design notes into a practical engineering reference for analog designers.
Mga alternatibo na pwedeng ilagay na LM324ADR2 — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok LM324ADR2 (parehas na form factor at footprint) — pagkakaiba sa Amplifier Type, Supply Voltage Range, Gain Bandwidth Product, Gain-Bandwidth Product, Input Offset Voltage.
LM324ADR2G
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →LM2902VDR2
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →LM324ADR2G
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →LM324ADR2G
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →LM324BAIDR
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →LM324ADR2 Mga Pinakamataas na Rating at Electrical Characteristics
| Amplifier Type | General-purpose operational amplifier |
| Number of Amplifier Circuits | 4 circuits |
| Supply Voltage Range | 3 V to 32 V |
| Gain-Bandwidth Product | 1 MHz |
| Maximum Input Offset Voltage | 3 mV |
| Input Configuration | True differential inputs |
| Packhaging | 14-pin SOIC |
| Bilang ng Pins | 14 pins |
| Uri ng Pagpapasok | Surface mount |
| Operating Voltage | 3 V to 32 V |
Gabay sa Pin Configuration ng LM324ADR2 14-pin soic
Pin configuration para sa LM324ADR2 (14-pin soic package). Ang analog component na ito ay may input, output, at power supply pins. Sumangguni sa datasheet ng manufacturer para sa offset null, compensation, at enable pin configurations. Perpekto para sa signal conditioning at amplifier circuits.
Wala ng detalyadong pinout data na magagamit para sa LM324ADR2.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
LM324ADR2 ay nararapat para sa 6 aplikasyons: Industrial Sensor Signal Conditioning, Audio Preamplification, Active Filtering, Battery-Powered Monitoring, Data Acquisition Front End, Communications Interface Conditioning.
Industrial Sensor Signal Conditioning
The LM324ADR2 fits four-channel industrial sensor conditioning because it combines four true-differential amplifiers in one 14-pin SOIC package and operates from 3 V to 32 V. Each amplifier can condition a low-frequency sensor signal before it reaches an ADC or controller, reducing the number of separate packages and PCB area. The 1 MHz gain-bandwidth product supports modest closed-loop bandwidth rather than high-speed sensing, while the 3 mV maximum input offset voltage establishes the device's general-purpose accuracy class. For thermocouple, bridge, or pressure-sensor interfaces, verify input bias current, common-mode range, and output swing at the actual supply voltage before finalizing the channel gains.
Inirekomenda
Audio Preamplification
The LM324ADR2 is appropriate for general-purpose audio preamplification stages that operate well below its 1 MHz gain-bandwidth limit. Its four amplifier sections can process left and right channels plus additional monitor or headphone-driver paths in a single package, while the 3-32 V supply range supports both portable and higher-voltage equipment. The 3 mV maximum input offset voltage is generally unimportant for many line-level audio paths, but output swing and distortion must be checked when operating near either supply rail. A rail-to-rail amplifier is often preferable for single-cell systems because the LM324ADR2 does not provide a complete rail-to-rail output-swing guarantee.
Inirekomenda
Active Filtering
The LM324ADR2 can implement active low-pass, high-pass, or band-pass sections when the signal bandwidth remains modest relative to the 1 MHz gain-bandwidth product. Its four amplifier sections allow several filter stages to be placed in one 14-pin SOIC package, which is useful in compact sensor and control modules. Stable feedback ratios and suitable source and load impedances are essential because a general-purpose amplifier may require different compensation or output isolation than a dedicated filter IC. Simulate the complete filter, including component tolerances, and verify the closed-loop response across temperature before production. The broad 3-32 V supply range also permits filtering stages to share different rails within a larger system.
Inirekomenda
Battery-Powered Monitoring
The LM324ADR2 can support low-frequency monitoring functions in battery-powered equipment because its supply range begins at 3 V and includes four amplifier sections in one package. The device can amplify sensor, threshold, and current-sense signals when the signal bandwidth is substantially below 1 MHz and the output does not require rail-to-rail swing. Low-voltage operation reduces the available output range, so feedback design must preserve signal headroom at light load and heavy load. Quiescent current should be included in a complete battery-life calculation, and a micropower amplifier may be preferable when the monitored signals operate continuously. Use the 3-32 V limit as an absolute operating boundary rather than assuming output can reach either rail.
Inirekomenda
Data Acquisition Front End
The LM324ADR2 is useful as a four-channel input-conditioning amplifier ahead of data-conversion hardware when the signals are low frequency and the required precision is moderate. Its true-differential inputs, 1 MHz gain-bandwidth product, and four integrated channels allow instrumentation signals to be scaled before an ADC, while the 14-pin SOIC package simplifies board-level channel organization. The 3 mV maximum input offset voltage and unspecified input bias current must be reconciled with the smallest signal being measured. For high-resolution conversion or high-impedance sensors, use a precision or low-bias-current amplifier in the most critical channel. Check common-mode range, noise, settling time, and channel layout against the converter acquisition requirements.
Inirekomenda
Communications Interface Conditioning
The LM324ADR2 can condition slow communication-interface signals when the design needs more than two amplifier channels and can tolerate general-purpose accuracy. The quad package can support level shifting, receive filtering, thresholding, or driver-interface functions while operating from a supply compatible with 3-32 V. The 1 MHz gain-bandwidth product is much higher than many low-speed control or sensor links, but it does not guarantee adequate performance for high-speed Ethernet, USB, or isolated communications. Keep sensitive clocking and high-speed data paths on dedicated devices, and account for slew rate, output drive, and channel-to-channel behavior. Use a modern interface transceiver when protocol timing, impedance, or isolation requirements exceed general-purpose analog amplification.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for LM324ADR2 — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | LM324ADR2G | LM2902VDR2 | LM324ADR | LM324A | LM324B |
|---|---|---|---|---|---|---|
| Brand | onsemi | onsemi | onsemi | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC |
| Amplifier Circuits | 4 circuits | 4 circuits | 4 circuits | 4 circuits | 4 circuits | 4 circuits |
| Number of Pins | 14 pins | 14 pins | 14 pins | 14 pins | 14 pins | 14 pins |
| Product Family | LM324 general-purpose quad operational amplifier | LM324 general-purpose quad operational amplifier | LM2902 industrial quad operational amplifier | LM324 general-purpose quad operational amplifier | LM324A precision quad operational amplifier | LM324B quad operational amplifier |
| Special Features | General-purpose performance | General-purpose performance | Industrial temperature family | General-purpose performance | Precision offset option | B-version filtering and input-stage features |
Pangunahing mga Pagkakaiba
- Four general-purpose amplifiers in one 14-pin package (kumpara saLM2902VDR2)
- Direct onsemi family option with the same channel and package count (kumpara saLM324ADR2G)
- General-purpose offset specification matched to conventional LM324 designs (kumpara saLM324A)
Talaan ng Disenyo
Place the supply bypass capacitor as close as practical to the device supply and ground pins. Keep input and feedback traces short, avoid routing them beneath switching nodes or supply inductors, and provide a low-impedance ground return. Because the four amplifier sections share one package, noisy output loading and supply-current changes can affect neighboring channels even when their signal paths are physically separate.
Do not assume the output can swing to either supply rail. The usable output range depends on the supply voltage and load, so leave sufficient headroom for the output current and operating temperature. Likewise, the 3 mV input offset limit may be too high for precision bridge or current-sense measurements, and the 1 MHz gain-bandwidth product is not a guarantee of 1 MHz closed-loop operation at every gain.
Analyze the actual source impedance and load capacitance before using fast feedback networks. The general-purpose amplifier can require output isolation or an added compensation capacitor to maintain stability. Use the complete analog filter or amplifier model with the intended gain, source resistance, load, and supply configuration, then verify settling behavior on the assembled board.
Estimated: total dissipation equals supply voltage multiplied by the sum of quiescent current and load current, less the useful output power. Calculate this value at the highest expected supply and load, then compare the resulting junction temperature with the device rating using the package thermal information. Actual dissipation, quiescent current, and thermal resistance were not stated in the retrieved technical summary and must be taken from the manufacturer datasheet.
Impormasyon ng Pagsunod sa Kautusan
No specific compliance declaration was identified in the retrieved product and distributor results. Confirm RoHS, REACH, lead-free, halogen-free, and conflict-minerals status using the manufacturer's current declaration for the exact ordering code.