MC1458DT - High-Performance Dual Op Amp | STMicroelectronics
Артикул: MC1458DT ✓ АктивенMC1458DT Обзор
An operational amplifier is an analog integrated circuit that amplifies the difference between two input voltages. The MC1458 belongs to the operational-amplifier family, which is part of the broader analog IC and semiconductor hierarchy. Operational amplifiers are used wherever a circuit must amplify, buffer, filter, integrate, or compare a small electrical signal, making them foundational building blocks in instrumentation, control, communications, and consumer equipment.
Key features of the MC1458 include its dual-amplifier configuration, high-performance monolithic construction, wide input common-mode voltage range, and low power consumption. The dual format allows two independent amplifier channels in one package, reducing board area and simplifying designs that require matched amplification stages. Its general-purpose feedback configuration makes it useful in both conventional closed-loop amplifier circuits and active analog networks.
The MC1458 is specified for a wide range of operating voltages, which gives designers flexibility when using it with different supply rails and signal levels. The device is suitable for integrator and summing-amplifier applications because its high gain and feedback characteristics support accurate closed-loop operation. The manufacturer describes the MC1458 as intended for a wide range of analog applications rather than a single narrow use case.
Typical applications include audio preamplification, sensor signal conditioning, analog filtering, instrumentation, general feedback control, and low-frequency analog signal processing. Its SOIC-8 package also makes it practical for conventional PCB assembly where dual-channel analog amplification is required. Designers should verify supply voltage, input common-mode range, output swing, stability, and load requirements against the manufacturer datasheet for the exact operating conditions.
When designing around the MC1458DT, use appropriate input and output bypassing, keep feedback paths short, and verify that the selected operating point remains inside the device's electrical limits. This page combines the verified manufacturer and distributor information with practical selection guidance and drop-in cross-reference context for engineers evaluating the MC1458 family.
Аналоги без доработки для MC1458DT — 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 MC1458DT (тот же форм-фактор и посадочное место) — отличается по Package.
MC1458DR
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Открыть даташит →MC1458DT Максимальные параметры и электрические характеристики
| Device Type | High-performance monolithic dual operational amplifier |
| Number of Amplifiers | 2 |
| Input Common-Mode Voltage Range | Wide input common-mode voltage range |
| Operating Voltage Range | Wide operating-voltage range |
| Корпус | 8-SOIC |
| Тип монтажа | Surface mount |
Руководство по цоколевке MC1458DT в корпусе 8-soic
Цоколевка для MC1458DT (корпус 8-soic). 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 MC1458DT.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
MC1458DT подходит для 6 применениеs: General-Purpose Analog Amplification, Integrator and Summing Amplifier, Sensor Signal Conditioning, Audio Preamplification, Active Filtering and Buffering, Analog Control and Feedback Loops.
General-Purpose Analog Amplification
The MC1458DT is suitable for general-purpose closed-loop analog amplification because STMicroelectronics identifies it as a high-performance, monolithic dual operational amplifier with wide operating-voltage capability. Its two amplifier channels can provide independent gain stages for small-signal conditioning, buffering, or general feedback circuits. The 8-SOIC package helps consolidate two analog functions without requiring separate single-channel packages. Designers should verify the exact voltage gain, bandwidth, input offset, output swing, and supply limits in the MC1458 datasheet for the intended feedback network and load.
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Integrator and Summing Amplifier
The MC1458DT fits integrator and summing-amplifier circuits because STMicroelectronics explicitly identifies those configurations as intended uses for the MC1458 family. Its high-gain general-feedback architecture supports closed-loop operation with external resistors and capacitors, while the dual package can combine summing and integration functions when system partitioning permits. The main engineering checks are resistor ratios, capacitor selection, input bias-current effects, output saturation, and stability across the intended frequency range. Those numerical limits should be confirmed from the manufacturer datasheet before final component sizing.
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Sensor Signal Conditioning
The MC1458DT can be used to condition low-level sensor signals in industrial, instrumentation, and control systems when the signal bandwidth and input range fit the MC1458's specified operating limits. Two channels allow a system to amplify a sensor output and provide a buffered reference, monitor signal, or cascade stages without using two separate dual packages. The wide input common-mode range is the stated distinguishing feature, but designers must still verify the exact common-mode limits, input noise, offset voltage, bias current, and output drive for the selected sensor interface.
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Audio Preamplification
The MC1458DT is applicable to audio preamplifier and mixer subcircuits where a dual general-purpose amplifier is useful for two low-level signal paths. STMicroelectronics describes the MC1458 as suitable for a wide range of analog applications, and its dual-channel construction reduces package count compared with two single amplifiers. Audio designers must account for input-referred noise, small-signal gain accuracy, output swing into the next stage, and power-supply decoupling. Because the supplied excerpts do not provide the numerical noise or swing specifications, those values must be checked in the official datasheet.
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Active Filtering and Buffering
The MC1458DT can implement active filters and buffer stages when the required gain, bandwidth, and stability behavior are within the MC1458 family specifications. Its high-gain feedback topology is appropriate for RC active-filter networks, while the dual package can place a filter stage and a unity-gain buffer in adjacent channels. Keep the feedback components close to the amplifier pins and check phase margin against the manufacturer stability guidance, especially with capacitive loads. The exact gain-bandwidth product, slew rate, and load capability are unavailable in the supplied excerpts and remain datasheet checks.
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Analog Control and Feedback Loops
The MC1458DT is applicable to general feedback-control circuits because the manufacturer specifically lists general feedback applications and a wide operating-voltage range among the MC1458 family's strengths. Two channels can be used for forward-path amplification and feedback monitoring, or for loop-error amplification and actuator-command buffering. The design must be checked for phase margin, loop gain, output saturation, and recovery from overload. The provided data does not include a complete loop-response specification, so the manufacturer application and stability information should guide the implementation.
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Сводка рекомендуемых товаров
Справочные инженерные данные для MC1458DT — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | MC1458DR |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Package | 8-SOIC | 8-SOIC |
| Device Type | Dual operational amplifier | MC1458 family dual operational amplifier |
| Number of Amplifiers | 2 | 2 |
| Primary Applications | Integrator, summing amplifier, and general feedback | MC1458 family general analog applications |
Ключевые отличия
- Two-channel integration in one package (против MC1458DR)
- Manufacturer-identified analog application set (против MC1458DR)
- Wide common-mode and operating ranges (против MC1458DR)
Заметки по проектированию
Do not treat the phrase wide operating-voltage range as a substitute for numerical limits. Verify the MC1458 family supply-voltage limits, common-mode input range, output swing, and temperature grade in the manufacturer datasheet before connecting the MC1458DT to a new rail. The supplied search excerpts confirm the feature but do not provide the values, so using an assumed 5 V, 12 V, or ±15 V compatibility can lead to incorrect operation.
Place the MC1458DT close to the feedback resistors and compensation capacitors used by the integrator, filter, or gain stage. Keep both amplifier channels' ground returns connected to the same low-impedance analog ground region and decouple the supply pins near the package. Short feedback paths reduce parasitic feedback and help preserve the intended stability behavior described in the MC1458 datasheet.
For MC1458DT designs using the device as an integrator or active filter, check the complete transfer function including op-amp gain-bandwidth behavior, not only the ideal resistor and capacitor values. Use the manufacturer stability guidance to select gain and capacitance combinations. If the source or load is capacitive, verify the recommended compensation and output-driving conditions before layout release.
Информация о соответствии
The supplied verified excerpts identify the manufacturer and product family but do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status.
