MC1458DT - High-Performance Dual Op Amp | STMicroelectronics
Référence : MC1458DT ✓ ActifMC1458DT Présentation
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.
Alternatives de remplacement direct pour MC1458DT — 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 MC1458DT (même facteur de forme et même empreinte) — différant par Package.
MC1458DR
✅ Remplacement directContactez-nous pour le prix
Voir la fiche technique →MC1458DT Valeurs maximales et caractéristiques électriques
| 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 |
| Boîtier | 8-SOIC |
| Type de montage | Surface mount |
Guide de configuration des broches du MC1458DT 8-soic
Configuration des broches du MC1458DT (boîtier 8-soic). Ce composant analogique comporte des broches d'entrée, de sortie et d'alimentation. Consultez la fiche technique du fabricant pour les configurations des broches d'annulation d'offset, de compensation et d'activation. Idéal pour le conditionnement de signaux et les circuits amplificateurs.
Aucune donnée de brochage détaillée disponible pour MC1458DT.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
MC1458DT convient pour 6 applications: 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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC1458DT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Two-channel integration in one package (vs MC1458DR)
- Manufacturer-identified analog application set (vs MC1458DR)
- Wide common-mode and operating ranges (vs MC1458DR)
Notes de conception
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.
Informations de conformité
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.
