LM324F-E2 - 4-Channel 3-32V Op Amp | ROHM Semiconductor
Артикул: LM324F-E2 ✗ Снят с производстваLM324F-E2 Обзор
An operational amplifier is an analog integrated circuit that amplifies the voltage difference between its differential inputs while providing feedback control of gain and bandwidth. The quad-amplifier configuration combines four independent channels in one package, reducing board area and simplifying multi-channel designs. The LM324F family belongs to the operational-amplifier hierarchy, which includes general-purpose amplifiers, instrumentation amplifiers, buffer amplifiers, and analog signal-conditioning ICs.
The principal features of the LM324F-E2 include four amplifier circuits in one package, a 3 V to 32 V operating supply range, and a 14-SOP surface-mount package. Ground-sense operation makes the device applicable where signals are referenced to the system ground and the amplifier must tolerate operation from a single positive supply. The four-channel architecture is particularly useful when a board requires several similar low-frequency signal paths.
Internally frequency compensation allows each amplifier to operate as a stable closed-loop gain stage without external compensation components. This characteristic supports standard inverting, non-inverting, summing, differential, buffer, and feedback-control circuits. Designers should still verify gain-bandwidth, output swing, input common-mode range, slew rate, and output-current behavior against the manufacturer datasheet for the selected operating voltage and load.
Typical applications include four-channel sensor conditioning, industrial transducer interfaces, low-frequency control loops, instrumentation buffering, current-to-voltage conversion, and general analog measurement systems. The four channels may be used independently for different signal paths or combined in multi-stage circuits when signal polarity, biasing, and loading permit. The 3 V to 32 V supply range is useful for equipment operating from low-voltage electronics through higher industrial rails.
The principal design consideration is ensuring that every input, output, and bias point remains inside the electrical limits for the intended supply. Decoupling capacitors should be placed close to the power pins, the unused amplifier in a quad package should be configured according to the manufacturer guidance, and PCB traces should minimize coupling between high-gain and sensitive input nodes. Confirm the exposed package details and pin assignments on the official LM324F datasheet before layout release.
This product page combines the LM324F-E2 package and operating information with application guidance, replacement analysis, and design-focused comparisons. It is intended to help engineers identify the correct amplifier function, verify footprint compatibility, and plan PCB implementation without relying on a distributor summary alone.
Аналоги без доработки для LM324F-E2 — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с LM324F-E2 (тот же форм-фактор и посадочное место) — отличается по Amplifier Type, Architecture, Package, Supply Voltage Range.
LM324D
✅ Прямая заменаУточнить цену
Открыть даташит →LM324ADR2G
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Открыть даташит →LM324F-E2 Максимальные параметры и электрические характеристики
| Amplifier Count | 4 circuits |
| Supply Voltage Range | 3 V to 32 V |
| Корпус | 14-SOP |
| Тип монтажа | Surface mount |
| Product Type | General-purpose operational amplifier |
| Architecture | Quad operational amplifier |
| Compensation | Internally frequency compensated |
| Number of Channels | 4 channels |
Руководство по цоколевке LM324F-E2 в корпусе 14-sop
Цоколевка для LM324F-E2 (корпус 14-sop). Этот аналоговый компонент имеет выводы входа, выхода и питания. Обратитесь к техническому описанию производителя для конфигураций выводов балансировки нуля, коррекции и разрешения. Идеально подходит для схем обработки сигналов и усилителей.
Нет подробных данных о распиновке для LM324F-E2.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
LM324F-E2 подходит для 6 применениеs: Industrial Sensor Signal Conditioning, Four-Channel Instrumentation Buffering, Low-Frequency Control Loops, Current-to-Voltage Conversion, Audio and Communication Interface Circuits, Portable and Battery-Powered Electronics.
Industrial Sensor Signal Conditioning
The LM324F-E2 fits four-channel industrial sensor conditioning because it combines four amplifier circuits in one 14-SOP package and operates from 3 V to 32 V. Each channel can implement a standard inverting or non-inverting stage around a resistive sensor bridge, resistive divider, or current-to-voltage converter. The internally frequency-compensated architecture simplifies low-frequency closed-loop design without an external compensation network. According to the ROHM LM324F datasheet, the amplifier is intended for single-supply ground-sense operation, which is useful when the sensor signal is referenced to the same ground as the measurement electronics. Verify the input common-mode range, output swing, input bias current, and source-impedance limits for the selected sensor.
Рекомендуется
Four-Channel Instrumentation Buffering
The LM324F-E2 is useful when a measurement system needs several independent buffer stages rather than one high-speed amplifier. Its four channels can reduce output loading on slow sensors, DACs, dividers, or analog reference nodes while operating from the same single supply. The 3 V to 32 V range supports both compact 3.3 V instrumentation and higher industrial control voltages. According to the ROHM LM324F datasheet, the quad device is internally frequency compensated and intended for general-purpose ground-sense amplification. Use unity-gain stable connections only where the electrical characteristics support them, and verify input bias current, output-voltage headroom, capacitive-load behavior, and channel-to-channel matching before assigning precision tasks to each amplifier.
Рекомендуется
Low-Frequency Control Loops
The LM324F-E2 can implement low-frequency proportional, integral, or mixed control loops in industrial equipment where four similar amplifiers are required. Its internally frequency-compensated architecture supports closed-loop feedback networks, while the 3 V to 32 V supply range accommodates different control-rail levels. Four independent channels can implement a sensor amplifier, an error amplifier, an actuator driver, and a monitoring amplifier within one package. According to the ROHM LM324F datasheet, the device is designed for single-supply ground-sense operation. Engineer the loop for settling, output swing, load current, noise, and stability, and include an output clamp where the actuator can exceed the amplifier's allowable drive range.
Рекомендуется
Current-to-Voltage Conversion
The LM324F-E2 is suitable for converting small current-loop or shunt-derived signals into a measurable voltage when four channels can be used for related measurements. A transimpedance stage uses feedback resistance and capacitance to define gain and bandwidth, while the quad package consolidates several channels without requiring separate single-amplifier packages. The broad 3 V to 32 V operating range supports industrial process-control systems. According to the ROHM LM324F datasheet, the device provides internally frequency-compensated general-purpose amplification. Choose shunt and feedback values that keep input bias error and noise within the measurement target, and confirm the input common-mode range and output swing at the intended operating voltage.
Рекомендуется
Audio and Communication Interface Circuits
The LM324F-E2 can support low-frequency audio, communication, and interface signal paths where a general-purpose quad amplifier is adequate. Typical uses include microphone preamplification, headphone-interface support stages, line-level buffering, and gain-shaping blocks. The 14-SOP package allows four channels to be placed near the connector or signal source, which can shorten sensitive traces when the layout is planned correctly. According to the ROHM LM324F datasheet, the internally frequency-compensated device operates from a 3 V to 32 V single supply. Confirm gain-bandwidth product, slew rate, output swing, output noise, and load capability against the signal amplitude and bandwidth; the broad supply range alone does not establish suitability for high-fidelity audio performance.
Рекомендуется
Portable and Battery-Powered Electronics
The LM324F-E2 can be used in portable or battery-powered measurement modules when the signal bandwidth is low and the system operates from a 3 V to 32 V rail. The four-channel organization is valuable in compact devices that require several amplified sensor outputs without allocating four separate packages. The minimum 3 V supply operation supports compatibility with 3.3 V systems, although the amplifier's quiescent current must be included in the power budget. According to the ROHM LM324F datasheet, the device provides internally frequency-compensated ground-sense amplification. Use low-leakage input protection for battery nodes, verify the input common-mode range during discharge, and keep high-impedance traces short to reduce leakage and interference sensitivity.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для LM324F-E2 — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | LM324D | LM324ADR |
|---|---|---|---|
| Brand | ROHM Semiconductor | Texas Instruments | Texas Instruments |
| Package | 14-SOP | 14-SOP | 14-SOP |
| Amplifier Count | 4 circuits | 4 circuits | 4 circuits |
| Product Category | Ground-sense operational amplifier | General-purpose operational amplifier | General-purpose operational amplifier |
Ключевые отличия
- Wide single-supply operating range (против LM324D)
- Dedicated ROHM ground-sense implementation (против LM324ADR)
- Four independent channels in one package (против LM324D)
Заметки по проектированию
Place the supply bypass capacitor close to the LM324F-E2 power pins and connect it with short, low-inductance traces. For the 14-SOP footprint, follow the manufacturer land pattern and pin-one orientation rather than relying on a generic quad-op-amp drawing. Keep sensitive input and feedback routes away from high-impedance output and supply nodes, and provide a quiet ground-return path for each amplifier channel.
Do not assume that every four-channel LM324-family device has identical common-mode, output-swing, bandwidth, noise, and overload-recovery behavior. Verify each proposed substitute against the ROHM LM324F-E2 electrical-characteristics table, including minimum supply voltage and input offset. Confirm that unused channels are configured as directed by the manufacturer rather than leaving their inputs floating.
For sensor interfaces, calculate the maximum source impedance and compare the resulting bias-current and thermal-noise errors with the measurement target. Add the feedback capacitance required for the intended closed-loop bandwidth while observing the device's stability limits. When driving long cables or capacitive loads, keep the amplifier close to the source, terminate the line appropriately, and use an isolation resistor or buffer if the manufacturer's load guidance requires it.
Информация о соответствии
Compliance status must be confirmed for the exact LM324F-E2 ordering code from the manufacturer product documentation. AEC-Q100 is not applicable to this general-purpose operational amplifier.
