MC1458IN - Dual High-Performance Op Amp | STMicroelectronics
MPN: MC1458IN ✓ Hoạt độngMC1458IN Tóm tắt
An operational amplifier, or op amp, is a high-gain analog building block that compares its inverting and non-inverting inputs and drives an output toward the difference between those voltages, subject to negative feedback. Within the product hierarchy, the MC1458IN is a dual op amp, which is a type of analog amplifier IC used for instrumentation, signal conditioning, voltage following, active filtering, summing, and feedback control. The MC1458 family provides two amplifiers in one monolithic package, reducing component count while preserving independent operation of both channels.
Key features include two amplifier circuits in one package, a high-performance monolithic design, general-purpose feedback compatibility, a stated 0.8 V/µs slew rate, and an 8-pin Mini-DIP mounting format. These characteristics make the device suitable for analog systems requiring two precision-oriented signal paths without allocating two separate single amplifier packages. The through-hole package also supports conventional DIP sockets and prototype-board assembly.
According to the STMicroelectronics manufacturer datasheet, the MC1458 is intended for a wide range of analog applications, including integrators, summing amplifiers, and general feedback circuits. Its high gain and broad operating-voltage capability support conventional closed-loop analog designs, while the integrated dual configuration allows signal conditioning and active feedback stages to be placed close together on a board.
Typical applications include audio preamplification, instrumentation stages, active filters, analog summing networks, integrators, buffer amplifiers, and general industrial signal conditioning. In a dual-rail circuit, the two channels can process separate inputs or participate in cascaded stages. In single-supply equipment, the usable input and output range still requires careful common-mode and output-swing verification against the manufacturer specifications.
Designers should check the datasheet pinout, recommended operating voltages, common-mode range, output swing, offset specifications, compensation requirements, and supply decoupling before finalizing a board. Feedback-network values and source impedances should be selected against the documented frequency-response and noise characteristics rather than estimated from generic 741-family behavior.
This page consolidates verified manufacturer and distributor information, documented equivalent-family references, package-level comparison data, and practical selection guidance. It also distinguishes verified facts from parameters that still require confirmation from the current manufacturer datasheet, helping engineers qualify replacements without assuming undocumented electrical equivalence.
Bộ thay thế dễ dàng lắp đặt cho MC1458IN — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MC1458IN (cùng hình factor và footprint) — khác nhau ở Mounting Type, Pin Count, Slew Rate.
MC1458D
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC1458P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LM1458N
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
uPC1458C
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
CA1458
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC1458IN Tỷ lệ tối đa & tính chất điện
| Number of Amplifier Channels | 2 channels |
| Product Type | Dual high-performance operational amplifier |
| Slew Rate | 0.8 V/µs |
| Package Type | 8-pin Mini DIP |
| Số chân | 8 pins |
| Kiểu lắp đặt | Through-hole |
Hướng dẫn cấu hình chân MC1458IN 8-pin mini dip
Cấu hình chân cho MC1458IN (8-pin mini dip gói). Thành phần số hiệu này có chân đầu vào, đầu ra và nguồn cung cấp. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết cấu hình chân bù, bù trừ và chân kích hoạt. Hoàn hảo cho điều kiện tín hiệu và mạch khuếch đại.
Không có dữ liệu chân cụ thể sẵn có cho MC1458IN.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
MC1458IN phù hợp cho 6 Áp dụngs: Audio Preamplification, Instrumentation Signal Conditioning, Active Audio Filtering, Analog Summing and Integrator Circuits, Industrial Control Signal Conditioning, Voltage Buffering and Level Conditioning.
Audio Preamplification
The MC1458IN is appropriate for conventional audio preamplifier and feedback stages because it provides two amplifier channels, a listed 0.8 V/µs slew rate, and general-purpose operation in one 8-pin DIP package. One channel can provide gain while the other handles buffering, active feedback, or a second signal path. Designers should verify input offset, noise, gain-bandwidth product, output swing, and common-mode range in the manufacturer datasheet before setting closed-loop gain. Decoupling capacitors should be placed close to the supply pins, and the feedback resistors must be selected without loading the amplifier input excessively. Compared with a single-op-amp implementation, the dual package reduces board area and component count while retaining independent amplifier channels.
Được đề xuất
Instrumentation Signal Conditioning
The MC1458IN can support instrumentation conditioning when the required signal bandwidth and common-mode range stay within the documented device limits. Its two channels can form a noninverting or inverting gain stage followed by an active filter, allowing sensor signals to be conditioned before conversion or further processing. The 0.8 V/µs slew rate provides a concrete dynamic-response reference, while the manufacturer datasheet confirms suitability for general feedback, integrator, and summing-amplifier configurations. Engineers should verify input bias current, offset drift, open-loop gain, noise, and bias-current matching against the sensor impedance. High source impedance can increase offset error, so source resistance and resistor-network values must be included in the error budget.
Được đề xuất
Active Audio Filtering
The MC1458IN is suitable for active audio-filter experiments and conventional analog control blocks because the dual architecture provides two cascaded or independent amplifier stages in an 8-pin Mini-DIP package. The manufacturer explicitly identifies the MC1458 family for general feedback applications, while the distributor listing reports a 0.8 V/µs slew rate for dynamic behavior. A second-order filter can use one channel in an active stage and the other in gain compensation, although the closed-loop bandwidth must remain compatible with the target audio band. Component tolerances should be considered because they directly affect cutoff frequency and gain. Verify stability, output swing, and supply-current requirements in the datasheet before using the device near rail limits.
Được đề xuất
Analog Summing and Integrator Circuits
The MC1458IN directly matches the manufacturer-defined use cases for summing amplifiers and integrators. Its two independent amplifier channels can combine multiple inputs in one section and perform integration in another, while high gain and broad operating-voltage capability support conventional feedback designs. The stated 0.8 V/µs slew rate is a useful constraint when calculating large-signal response, and the general-purpose architecture remains appropriate for educational, laboratory, and industrial control prototypes. Capacitor tolerances, resistor ratios, input bias current, and output saturation must be checked because they determine integration accuracy and usable signal range. The circuit should also include suitable input and output protection if transient inputs or power-up transients can exceed the documented operating limits.
Được đề xuất
Industrial Control Signal Conditioning
The MC1458IN can serve in industrial control boards where two conventional analog channels are needed for sensor interfaces, actuator feedback, or error-amplifier functions. The through-hole 8-pin Mini-DIP package simplifies insertion, socket use, repair, and prototype assembly. According to the manufacturer datasheet, the high gain and broad operating-voltage range support general feedback applications, and the verified distributor data identifies two independent amplifier circuits. Industrial designs should nevertheless verify noise immunity, common-mode range, output drive, and temperature limits for the actual installation. Keep analog feedback loops compact, route signal returns away from switching nodes, and use stable reference or feedback resistors. A newer rail-to-rail amplifier may be preferable when the control signal can approach either supply rail.
Được đề xuất
Voltage Buffering and Level Conditioning
The MC1458IN can implement voltage followers and two-stage level-conditioning paths where conventional closed-loop operation and an 8-pin DIP package are preferred. One channel may isolate a high-impedance source, while the second channel applies gain or drives a subsequent circuit. The manufacturer identifies the family for general feedback applications, making follower and buffered-feedback configurations natural fits. However, the usable output range, input common-mode range, and stability must be checked against the signal excursion and supply voltage. The listed 0.8 V/µs slew rate helps determine large-signal settling behavior for slow-moving control signals. Place input and output compensation components according to the datasheet guidance, and avoid assuming that a generic 741-family pinout is interchangeable with every dual amplifier package.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC1458IN — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
For cross-brand sourcing, the LM1458N has the clearest supplied evidence because its distributor listing describes the same specifications as the MC1458 and identifies a DIP-8 package. The uPC1458C and CA1458 are also documented as MC1458 equivalents, but each requires a detailed review of the current manufacturer datasheet. If the original amplifier cannot meet low-noise, low-offset, rail-to-rail, low-power, or automotive requirements, redesign around a newer device rather than treating a family equivalent as automatically superior.
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MC1458D | MC1458P | LM1458N | uPC1458C | CA1458 |
|---|---|---|---|---|---|---|
| Package | DIP-8 | DIP-8 | DIP-8 | DIP-8 | DIP-8 | DIP-8 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | Texas Instruments | Renesas Electronics | Renesas Electronics |
| Amplifier Channels | 2 channels | 2 channels | 2 channels | 2 channels | 2 channels | 2 channels |
| Documented Family Equivalence | MC1458 reference device | MC1458 family | MC1458 family | Described as having the same specifications as the MC1458 | Identified as an MC1458 equivalent | Identified as an MC1458 equivalent |
Bảo phân biệt quan trọng
- Two verified amplifier channels in one through-hole package (vsMC1458D)
- Documented same-specification cross-brand family option (vsLM1458N)
- Manufacturer-confirmed general feedback and integration support (vsuPC1458C)
Ghi chú thiết kế
Place the MC1458IN on a through-hole DIP-8 footprint only after comparing the official manufacturer pin drawing with the existing PCB. The verified excerpts confirm an 8-Mini DIP format but do not provide the pin-number table, so do not infer pin names from a generic 741-family dual package. Confirm supply, input, output, and offset-null or no-connect positions before routing power or installing the amplifier.
Do not substitute MC1458IN solely because another part is described as an equivalent family member. Compare supply voltage, common-mode input range, output swing, offset, input bias current, gain-bandwidth product, slew rate, noise, and compensation requirements against the MC1458 datasheet. The verified web results support DIP-8 family equivalence, but they do not quantify every electrical parameter or ordering-suffix distinction.
Keep feedback resistors and compensation capacitors close to the relevant amplifier pins, and route the ground return without sharing a switching-node path with the analog signal. The two channels should not be assumed to share an ideal reference point merely because they share a package. Verify bias-current errors at the source impedance and account for input offset when evaluating small sensor or audio signals.
Thông tin tuân thủ
The supplied verified excerpts do not provide specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations for MC1458IN.