MC1458N - Dual High-Performance Op Amp | STMicroelectronics
MPN: MC1458N ✓ فعالMC1458N نمای کلی
An operational amplifier is an analog IC that amplifies the voltage difference between its inverting and non-inverting inputs while using negative feedback to control gain, bandwidth, and output behavior. The dual MC1458 belongs to the operational-amplifier hierarchy, which extends to analog amplifiers and signal-conditioning ICs. Two independent amplifiers in one package reduce board area and simplify designs requiring matched channel functions.
The MC1458's internal compensation removes the need for external frequency-compensation components in standard closed-loop configurations. Its high open-loop gain supports accurate amplification in feedback circuits, while its broad common-mode range accommodates signals around the circuit's bias point. Short-circuit protection improves robustness when an output is overloaded. The product is identified by distributors as a standard, general-purpose, two-circuit amplifier.
STMicroelectronics describes the MC1458 as a high-performance monolithic dual operational amplifier intended for a wide range of analog applications. The combination of high gain and wide operating-voltage capability supports integrator and summing-amplifier designs, as well as conventional closed-loop feedback circuits. Because both amplifiers share one package, matching of channel behavior can be beneficial in precision audio, instrumentation, and analog-control products.
Typical uses include audio preamplification, active filters, summing amplifiers, integrators, sensor-signal conditioning, and general feedback-based analog stages. The dual topology is especially useful when a board needs two gain stages with a common supply arrangement. The 8-pin Mini DIP through-hole package is also convenient for legacy equipment, educational circuits, and repair applications where a surface-mount footprint would be unsuitable.
Designers should verify the exact supply-voltage, input-voltage, output-current, gain-bandwidth, input-offset, and output-swing limits from the manufacturer datasheet before finalizing a new design. Input and output stability must also be checked with the selected feedback network and load. Because through-hole devices can be affected by socket contact resistance, lead oxidation, and longer analog traces, prototype measurements are recommended before production use.
This page combines the verified manufacturer and distributor information for MC1458N with package-aware replacement guidance, application context, comparison parameters, and practical design notes. It distinguishes confirmed device characteristics from electrical details that still require verification from the current manufacturer datasheet.
جایگزین‌های drop-in برای MC1458N — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای MC1458N (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در AEC-Q100 Qualification, Package, Product Type.
MC1458P
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←LM1458N
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
uPC1458P
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
CA1458P
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
MC4558CPT
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
MC1458N حداکثر مقادیر مجاز و مشخصات الکتریکی
| Product Type | Dual operational amplifier |
| Manufacturer | STMicroelectronics |
| Number of Amplifier Channels | 2 channels |
| Architecture | Monolithic |
| Compensation | Internally compensated |
| Short-Circuit Protection | Yes |
| بسته‌بندی | 8-pin Mini DIP |
| نوع نصب | Through-hole |
| وضعیت RoHS | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | not_applicable |
راهنمای پیکربندی پین MC1458N 8-pin mini dip
پیکربندی پین برای MC1458N (پکیج 8-pin mini dip). این قطعه آنالوگ دارای پین‌های ورودی، خروجی و تغذیه است. برای پیکربندی‌های پین offset null، جبران‌سازی و فعال‌سازی به دیتاشیت سازنده مراجعه کنید. ایده‌آل برای مدارهای شرطی‌سازی سیگنال و تقویت‌کننده.
داده پین‌آوت تفصیلی موجود نیست برای MC1458N.
به دیتاشیت برای پیکربندی کامل پین‌ها.
کاربردهای معمول
MC1458N مناسب است برای 6 کاربردs: Audio Preamplifier Stages, Active Audio Filters, Summing and Mixing Amplifier, Analog Integrator Control Loops, Sensor Signal Conditioning, Legacy Audio Equipment Repair.
Audio Preamplifier Stages
The MC1458N is suitable for dual-channel audio preamplification because it combines two high-gain, internally compensated amplifiers with short-circuit protection in one 8-pin Mini DIP package. Each channel can use a conventional inverting or non-inverting feedback network to establish the required voltage gain and bandwidth. The dual layout also simplifies balanced or two-ended audio circuitry by keeping the amplifier pair in one package. Engineers should verify output-swing limits and slew rate from the STMicroelectronics datasheet, then confirm that the chosen feedback components do not cause instability. A prototype should be checked for clipping, channel matching, and oscillation at the lowest intended supply voltage.
پیشنهادی
Active Audio Filters
The two amplifiers in an MC1458N can implement first- or second-order active filter sections when configured with external resistors and capacitors. Its internally compensated architecture supports ordinary closed-loop filter designs, while high open-loop gain helps preserve the intended transfer function. The dual package is valuable for stereo crossover, equalization, or anti-alias filtering because both channels can use corresponding networks on one device. Component tolerances and the amplifier's finite gain-bandwidth product can shift filter poles and stopband attenuation, so simulation and breadboard measurements are important. Exact noise, bandwidth, and common-mode limits must be taken from the current manufacturer datasheet.
پیشنهادی
Summing and Mixing Amplifier
The MC1458N is explicitly identified by STMicroelectronics for summing-amplifier applications, making it appropriate for combining multiple analog inputs into one channel. Both amplifier channels can form separate weighted summing stages or support a two-channel mixer. Resistor ratios establish the contribution of each input, while internal compensation removes the need for external frequency compensation in standard closed-loop use. Practical designs should include input attenuation or clamping where source voltages may exceed the verified common-mode range. Engineers should also check whether the computed output can remain within the datasheet's allowed output swing under worst-case input combinations.
پیشنهادی
Analog Integrator Control Loops
The MC1458N can serve as the active element in an analog integrator because STMicroelectronics identifies integrators as a target application and describes the amplifier as having high gain and a wide operating-voltage range. In a feedback circuit, the integration rate depends on the input voltage, feedback resistor, and feedback capacitor. The internally compensated amplifier supports the standard closed-loop topology, but capacitor tolerance and amplifier input bias current can introduce offset and drift. The integrator should therefore be evaluated over its full supply and temperature range. Confirming the exact input-bias current and output-swing specifications is essential before using the circuit in a precision control loop.
پیشنهادی
Sensor Signal Conditioning
The MC1458N can condition low-level sensor signals through differential, inverting, or non-inverting amplifier stages. Its high open-loop gain and internal compensation are useful for fixed-gain sensor interfaces, while the dual package permits amplification of a sensor signal and a reference or monitor channel. The design must ensure that both sensor outputs remain within the amplifier's common-mode input range and that the output does not exceed the available voltage swing. Input bias current, offset voltage, and temperature drift are important for high-impedance sensors, but their numerical values are not present in the retrieved snippets and must be verified from the official datasheet.
پیشنهادی
Legacy Audio Equipment Repair
The MC1458N is particularly useful for repairing legacy audio equipment that originally used an 8-pin dual operational amplifier in a DIP socket. Its through-hole Mini DIP package allows direct board-level installation without a new surface-mount footprint, and the device provides the gain, internal compensation, and short-circuit protection expected in general feedback applications. Repairers should still inspect socket contacts, clean oxidized leads, and verify schematic pin assignments before power-up. Because several historically related families share DIP-8 packages, exact pinout and electrical compatibility must be checked rather than inferred from the package shape alone.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای MC1458N — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | MC1458P | LM1458N | uPC1458P | CA1458P | MC4558CPT |
|---|---|---|---|---|---|---|
| Package | DIP-8 (8-Mini DIP) | DIP-8 (8-Mini DIP) | DIP-8 (8-Mini DIP) | DIP-8 (8-Mini DIP) | DIP-8 (8-Mini DIP) | DIP-8 (8-Mini DIP) |
| Brand | STMicroelectronics | STMicroelectronics | Texas Instruments | Renesas Electronics | Analog Devices | Motorola |
| Amplifier Channels | 2 | 2 | 2 | 2 | 2 | 2 |
| Primary Function | High-performance operational amplifier | High-performance operational amplifier | General-purpose dual operational amplifier | Dual operational amplifier | Dual operational amplifier | High-performance monolithic dual operational amplifier |
تفاوت‌های کلیدی
- Two independent amplifiers in one legacy DIP package (در مقابلMC4558CPT)
- Direct STMicroelectronics family support (در مقابلLM1458N)
- General-purpose feedback suitability (در مقابلuPC1458P)
یادداشت‌های طراحی
Do not substitute a dual DIP-8 amplifier based only on package shape. Verify the complete pin table, supply ratings, common-mode range, output swing, input bias current, and compensation topology against the current manufacturer datasheet. Historical MC1458, LM1458, uPC1458, CA1458, and MC4558 devices are related, but the retrieved excerpts do not expose complete electrical tables for every candidate.
Decouple each supply rail near the device with capacitance selected for the intended operating frequency and supply impedance. Confirm the manufacturer's recommended input and bypass capacitor values before layout release. Because the verified excerpts do not state the numeric supply limits, current draw, or output swing, these values must be obtained from the datasheet before sizing the regulator, traces, and bulk capacitance.
Keep each amplifier's feedback components close to its input and output pins, and route the two channels symmetrically when channel matching matters. For audio or instrumentation, use an unbroken ground reference, minimize long input traces, and keep switching-node and high-current paths physically separated. The through-hole package may be inserted into a socket during development, so inspect contacts for corrosion and resistance.
Validate closed-loop stability with the intended feedback ratio, source impedance, load capacitance, and board parasitics. Although the MC1458 is internally compensated for standard feedback applications, unusual feedback networks or capacitive loads can still produce overshoot or oscillation. Use an oscilloscope to check each channel at the lowest planned supply voltage, and keep signal amplitudes below the verified output-swing limits.
اطلاعات انطباق
The retrieved sources do not explicitly state MC1458N RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. The device is a general-purpose operational amplifier and is not presented as an AEC-Q100-qualified automotive part.
