LM258NG - Dual 1MHz Operational Amplifier | onsemi
Артикул: LM258NG ✗ Снят с производстваLM258NG Обзор
An operational amplifier is a high-gain differential amplifier used to amplify, buffer, compare, or integrate signals. The LM258NG belongs to the dual general-purpose operational-amplifier class and within the broader hierarchy of analog ICs, analog signal-chain components, and semiconductor devices. Unlike rail-to-rail precision amplifiers, its practical input and output ranges depend on its supply voltage and circuit configuration. Designers should therefore evaluate common-mode range, output swing, input bias current, and load capability against their signal levels.
The principal verified characteristics are a 1 MHz gain-bandwidth product, 0.6 V/µs slew rate, dual-circuit construction, and a 3 V to 32 V operating supply range. The low-power-drain architecture is useful in battery-powered or space-constrained equipment, while the common-mode range extending to ground or VEE improves usefulness in systems powered from one positive rail. The 8-pin PDIP package also supports conventional through-hole assembly and socket-level serviceability.
The LM258NG architecture is suited to general-purpose feedback stages rather than high-speed signal chains. A 1 MHz gain-bandwidth product provides usable bandwidth at modest closed-loop gains, while the 0.6 V/µs slew rate limits how quickly output voltage can follow a changing input. In gain configurations with substantial noise gain, the available closed-loop bandwidth is lower. Stable feedback-network design and appropriate output loading are therefore necessary to avoid oscillation or slew-limited operation.
Typical uses include low-frequency sensor signal conditioning, industrial control-loop amplifiers, audio preamplification, comparators with external hysteresis, and buffered instrumentation inputs. The dual configuration can implement two independent amplifier sections on one PCB. In a single-supply circuit, input and output grounding must be referenced carefully because the common-mode range reaches ground or VEE but is not necessarily a rail-to-rail input specification.
A key design consideration is power-supply decoupling: place a suitable bypass capacitor close to each supply pin and route return currents without splitting analog ground paths. Check output swing and load current at the lowest supply voltage, and use output isolation when driving capacitive loads. These checks are especially important because the available verified data does not specify detailed offset, bias-current, thermal, or output-drive limits.
This page consolidates verified distributor specifications, package information, practical application guidance, and verified web-data drop-in candidates. It also distinguishes confirmed facts from parameters that still require confirmation from the manufacturer datasheet, helping engineers identify the LM258NG quickly while avoiding unsupported assumptions.
Аналоги без доработки для LM258NG — 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 LM258NG (тот же форм-фактор и посадочное место) — отличается по Mounting Type, Package, Supply Configuration.
LM358NZ
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
LM358AN
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
BA4560
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
LM258NG Максимальные параметры и электрические характеристики
| Amplifier Type | General Purpose |
| Number of Circuits | 2 circuits |
| Gain-Bandwidth Product | 1 MHz |
| Slew Rate | 0.6 V/µs |
| Supply Voltage Range | 3 V to 32 V |
| Supply Configuration | Single supply or split supply |
| Common-Mode Input Voltage Range | Extends to ground/VEE |
| Корпус | 8-PDIP, 0.300 inch (7.62 mm) pitch |
| Число выводов | 8 pins |
| Тип монтажа | Through-hole |
| Packaging | Tube |
Руководство по цоколевке LM258NG в корпусе 8-pdip, 0.300 inch (7.62 mm) pitch
Цоколевка для LM258NG (корпус 8-pdip, 0.300 inch (7.62 mm) pitch). 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 LM258NG.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
LM258NG подходит для 6 применениеs: Industrial Sensor Signal Conditioning, Audio Preamplification, Power Supply Feedback Control, Data Acquisition Input Buffering, Motor and Relay Control, Communications Interface Conditioning.
Industrial Sensor Signal Conditioning
The LM258NG fits low-level industrial sensor conditioning because it combines two general-purpose amplifier channels, a 1 MHz gain-bandwidth product, and operation from 3 V to 32 V in one 8-PDIP package. Its common-mode input range extending toward ground/VEE is useful when a transducer signal must be amplified above a single positive supply. Place one channel around the sensor interface and use the second for filtering or offset correction. Because verified offset, bias-current, noise, and output-drive values are unavailable, verify those limits against the sensor impedance and required accuracy before production.
Рекомендуется
Audio Preamplification
The LM258NG can serve as a general-purpose audio preamplifier for low-frequency source signals, with two independent amplifier sections in one 8-pin through-hole package. The verified 1 MHz gain-bandwidth product and 0.6 V/µs slew rate are adequate for many audio-control and line-level stages that do not require wideband precision performance. Its common-mode range extending toward ground/VEE supports single-rail operation around biased signals. Confirm output swing, noise, distortion, and load capability from the manufacturer datasheet, especially when driving headphone, mixer, or power-amplifier input networks.
Рекомендуется
Power Supply Feedback Control
The LM258NG is suitable for supervisory and feedback functions in a 3 V to 32 V power system because it supports single- or split-supply operation and provides two amplifier channels. One section can amplify a scaled output-voltage or current signal, while the other supports an error amplifier or threshold comparator. The 0.6 V/µs slew rate is suitable for relatively slow control loops rather than high-frequency compensation tasks. Verify output saturation, common-mode limits, and the datasheet's stability requirements before using it directly across a high-side feedback network.
Рекомендуется
Data Acquisition Input Buffering
The dual LM258NG can buffer two low-frequency sensor or ADC inputs when the source impedance and required bandwidth are modest. Its 1 MHz gain-bandwidth product is substantially above many slow measurement channels, while its common-mode range extending to ground/VEE assists single-supply acquisition designs. The two circuits can also form a differential amplifier when resistor ratios are matched carefully. Before using it with an ADC, verify input bias current for source-error analysis, output settling behavior, noise, and the ADC's allowable kickback; a dedicated precision amplifier may be preferable for high-impedance sources.
Рекомендуется
Motor and Relay Control
The LM258NG can amplify position, current, or feedback signals in industrial motor-control and relay-driver circuits because it accepts a broad 3 V to 32 V supply range and includes two amplifier channels. A signal-conditioning section can scale a sensor output before it reaches a controller, while the second channel may support a threshold detector. Its 0.6 V/µs slew rate suits slow control signals, not high-bandwidth current loops. Check output drive, saturation margin, noise immunity, and isolation requirements; use dedicated driver ICs for switching the motor or relay itself.
Рекомендуется
Communications Interface Conditioning
The LM258NG is suitable for low-frequency receive-path conditioning in communications equipment when the interface operates within the amplifier's common-mode and swing limits. The dual 8-PDIP device can provide gain and filtering around slower baseband or supervisory signals without requiring a high-speed differential amplifier. Its 3 V to 32 V supply range accommodates industrial interface rails, while the common-mode range extending toward ground/VEE simplifies single-rail biasing. Review bandwidth, slew rate, noise, input capacitance, and output isolation before connecting it near high-speed data lines or long cables.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для LM258NG — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | LM358NZ | LM358AN | BA4560 |
|---|---|---|---|---|
| Package | 8-PDIP | 8-PDIP | 8-PDIP | 8-DIP |
| Brand | onsemi | onsemi | onsemi | Rohm Semiconductor |
| Amplifier Type | General Purpose | General Purpose | General Purpose | General Purpose |
| Number of Circuits | 2 circuits | 2 circuits | 2 circuits | 2 circuits |
| Mounting Type | Through-hole | Through-hole | Through-hole | Through-hole |
Ключевые отличия
- Single package provides two independent general-purpose amplifier channels (против BA4560)
- Verified operating supply extends to 32 V (против LM358NZ)
- Single- and split-supply operation supports flexible industrial biasing (против LM358AN)
- Established 1 MHz bandwidth and 0.6 V/µs slew-rate characterization (против BA4560)
Заметки по проектированию
Place the supply bypass capacitor close to the LM258NG power pins and provide a low-impedance return path. Because the verified data specifies a broad 3 V to 32 V operating range but does not provide a recommended capacitance value, use the manufacturer datasheet's decoupling guidance rather than inventing a value. For split supplies, verify the allowable total and individual rail limits before layout.
Keep the feedback resistors and compensation components adjacent to their associated amplifier pins, and route the two amplifier channels to minimize shared high-impedance input nodes. The complete LM258NG pinout was not present in the verified sources, so do not release a PCB until pins 1 through 8 have been checked against the manufacturer datasheet. This check is especially important for LM358 and BA4560 alternatives because matching package lead count does not by itself prove matching functions.
Do not treat the common-mode input range extending toward ground/VEE as a guarantee of rail-to-rail operation or unrestricted output swing. At the lowest supply voltage, verify that the input signal and required output remain inside the datasheet limits. Likewise, the 1 MHz gain-bandwidth product is the open-loop metric; usable closed-loop bandwidth decreases as noise gain increases.
When driving an ADC, cable, or capacitive load, use an output isolation resistor if ringing appears and keep the feedback loop compact. The 0.6 V/µs slew rate is the verified slew-rate limit, but it does not independently specify capacitive-load stability. Validate settling, noise, and transient response across the intended supply range and temperature conditions.
Информация о соответствии
The supplied verified sources do not explicitly state LM258NG compliance with RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals requirements. Obtain the current onsemi declarations for the exact ordering code.
