MC34072D - 4.5 MHz Single Op Amp, 3-44 V | onsemi
MPN: MC34072D ✓ AktifMC34072D Genel Bakış
An operational amplifier is a high-gain, active differential amplifier whose inverting and non-inverting inputs control an output voltage. Within the broader semiconductor hierarchy, an operational amplifier is an analog integrated circuit used for signal conditioning, current-to-voltage conversion, feedback control, filtering, and buffered drive stages. The MC34072 belongs to a family of single-supply, bipolar operational amplifiers designed to combine broad rail-voltage capability with relatively high bandwidth.
The principal features of the MC34072D include 4.5 MHz gain bandwidth, 13 V/µs slew rate, 1.1 µs settling time to 0.1%, and a low 3.0 mV maximum input offset voltage for the A-suffix grade. It operates from 3.0 V to 44 V, and its input common-mode range includes the negative supply rail, which simplifies single-supply signal-chain design. Output swing extends from approximately -14.7 V to +14 V under the conditions listed by the manufacturer.
The bipolar fabrication of the MC34071, MC34072, and MC34074 families supports the combination of wide bandwidth, high slew rate, and common-mode operation that extends to ground. This characteristic is particularly useful when signals remain close to the lower supply rail or when the amplifier must process bipolar sensor signals from a unipolar-powered acquisition circuit. Input bias current and noise specifications should be checked against the source impedance in the selected gain configuration.
Typical uses include low-voltage sensor interfaces, industrial process-control loops, audio preamplifier stages, active filters, and general instrumentation. Its 3.0 V to 44 V operating range also makes it suitable for industrial systems that operate from a 5 V, 12 V, 24 V, or higher regulated rail. The device can be used where the required signal bandwidth remains below the amplifier's closed-loop bandwidth for the selected noise-gain setting.
Designers should verify output-current capability, output-swing limits, input common-mode range, and stability at the intended gain and capacitive-load conditions. Keep feedback-loop layouts compact, place compensation or decoupling components close to the relevant pins, and avoid operating near the output-swing limits when driving low-impedance downstream loads.
This page consolidates the MC34072D electrical characteristics, confirmed ordering variants, package information, and application guidance with comparison notes for engineers evaluating drop-in operational-amplifier alternatives.
Drop-in alternatifler için MC34072D — aynı paket, pin-başına uyumlu. PCB yeniden montajı gerektiren farklı paket bileşenleri dışlanmıştır.
MC34072DR2G
✅ Yerleştirme📋 Katalogda Olmayan Referans Alternatifi
MC34072DR2
✅ Yerleştirme📋 Katalogda Olmayan Referans Alternatifi
MC34072D Maksimum Değerlendirmeler & Elektriksel Özellikler
| Amplifier Type | Single general-purpose operational amplifier |
| Number of Circuits | 1 circuit |
| Supply Voltage Range | 3.0 V to 44 V |
| Gain-Bandwidth Product | 4.5 MHz |
| Slew Rate | 13 V/µs |
| Settling Time | 1.1 µs to 0.1% |
| Maximum Input Offset Voltage | 3.0 mV maximum for the A-suffix grade |
| Input Common-Mode Range | Includes the ground rail |
| Output Voltage Swing | -14.7 V to +14 V under specified conditions |
| İşletim Sıcaklığı Aralığı | -40°C to +85°C |
| Paket | 8-pin SOIC |
| Montaj Türü | Surface mount |
| Technology | Bipolar fabrication |
| Çıkış Türü | Single-ended |
MC34072D Pin Yapısı
| Pin 1 | NC — Not connected |
| Pin 2 | -IN — Inverting input |
| Pin 3 | +IN — Non-inverting input |
| Pin 4 | V- — Negative supply or ground connection |
| Pin 5 | NC — Not connected |
| Pin 6 | OUT — Operational amplifier output |
| Pin 7 | V+ — Positive supply connection |
| Pin 8 | NC — Not connected |
Tipik Uygulamalar
MC34072D için uygundur 6 uygulamas: 24 V Industrial Sensor Interface, Active Audio Preamplifier, Precision Active Filtering, Process-Control Loop Amplifier, Low-Voltage Signal Conditioning, Test and Measurement Front End.
24 V Industrial Sensor Interface
The MC34072D suits 24 V industrial sensor interfaces because its supply rating reaches 44 V while its input common-mode range includes ground. Place the amplifier in a non-inverting configuration when the sensor output is referenced to 0 V, and use a mid-supply bias only when the input signal can exceed the allowed common-mode window. Its 4.5 MHz gain-bandwidth product and 13 V/µs slew rate also provide useful margin for sensor signals with moderate edge rates. Include input protection for industrial transients and confirm that the selected feedback network preserves the required closed-loop bandwidth.
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Active Audio Preamplifier
The MC34072D can provide gain and impedance isolation in an audio preamplifier because its 4.5 MHz gain-bandwidth product exceeds the bandwidth required by most audio paths. The 13 V/µs slew rate supports clean handling of transients, while operation from 3.0 V to 44 V permits use with legacy and modern supply voltages. Set the closed-loop gain so that the required signal amplitude remains inside the output-swing limits, and verify the output-current demand into the following stage.
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Precision Active Filtering
Use the MC34072D for an active filter when the design requires more bandwidth than a conventional low-frequency amplifier provides. Its 4.5 MHz gain-bandwidth product and 13 V/µs slew rate allow closed-loop operation at frequencies well below the amplifier limit while maintaining signal amplitude. Select resistor and capacitor values against the desired gain-bandwidth response, and confirm the op amp's gain-bandwidth interaction for the selected noise gain. Place the feedback components close to the amplifier pins to minimize parasitic feedback and instability.
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Process-Control Loop Amplifier
The MC34072D fits process-control loops that require a faster amplifier than a basic general-purpose device. A 4.5 MHz gain-bandwidth product and 13 V/µs slew rate support control signals with sharper transitions, while the 3.0 V to 44 V operating range simplifies interface design around 5 V, 12 V, and 24 V control systems. Check the loop stability and compensation with the actual sensor and actuator loading. The amplifier's ground-inclusive input range is valuable when the feedback signal sits close to the lower rail.
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Low-Voltage Signal Conditioning
The MC34072D is appropriate for low-voltage signal conditioning because its minimum operating voltage is 3.0 V and its input common-mode range includes ground. It can amplify and buffer signals from sensors, dividers, or transducers referenced to the zero-volt rail without requiring a bipolar supply. The 4.5 MHz bandwidth and 13 V/µs slew rate provide extra performance margin for higher-frequency components in the signal chain. Confirm input bias-current error against the source impedance and verify that the output amplitude stays within the specified swing.
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Test and Measurement Front End
The MC34072D can buffer or amplify an instrument front end where moderate bandwidth and wide supply tolerance are important. Its 4.5 MHz gain-bandwidth product and 13 V/µs slew rate reduce the risk of slew-limited acquisition stages, while operation from 3.0 V to 44 V supports laboratory and industrial supplies. Keep the layout compact and observe the input common-mode and output-swing limits. If the source has high capacitance, confirm stability with the intended gain, load, and probe arrangement before finalizing the design.
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Önerilen Ürünler Özeti
Mühendislik referans verileri: MC34072D — karşılaştırma, tasarım rehberi ve uyumluluk bilgileri.
Seçim Kılavuzu
Alternatiflerle Karşılaştırma
| Parametre | Bu Ürün | MC34072DR2G | MC34072DR2 |
|---|---|---|---|
| Brand | onsemi | onsemi | onsemi |
| Package | 8-pin SOIC | 8-pin SOIC - same | 8-pin SOIC - same |
| Amplifier Configuration | Single amplifier | Single amplifier | Single amplifier |
| Supply Voltage Range | 3.0 V to 44 V | 3.0 V to 44 V | 3.0 V to 44 V |
| Gain-Bandwidth Product | 4.5 MHz | 4.5 MHz | 4.5 MHz |
| Slew Rate | 13 V/µs | 13 V/µs | 13 V/µs |
| Settling Time | 1.1 µs to 0.1% | 1.1 µs to 0.1% | 1.1 µs to 0.1% |
| Input Common-Mode Range | Includes ground | Includes ground | Includes ground |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C |
Ana Farklılayıcılar
- Wide single-supply operating range (karşılaştırma:MC34072DR2G)
- High bandwidth for a single general-purpose amplifier (karşılaştırma:MC34072DR2)
- Ground-inclusive input operation (karşılaştırma:MC34072DR2G)
Tasarım Notları
The MC34072D accepts a 3.0 V to 44 V supply, but the usable input and output ranges do not automatically extend rail to rail. Check the input common-mode limits and the stated -14.7 V to +14 V output-swing conditions against the intended supply and load. Use the manufacturer pin-description table to connect the negative supply pin correctly in single-supply configurations.
Keep the op amp, feedback resistors, and compensation components close to the associated pins. Route the output and feedback paths away from high-current switching nodes to avoid coupling into the 13 V/µs output stage. A compact ground return from the supply pin and decoupling capacitor reduces the loop area and helps preserve predictable behavior in instrumentation and industrial control systems.
Do not select the amplifier from bandwidth alone. A 4.5 MHz gain-bandwidth product must be compared with the closed-loop noise gain, while 13 V/µs slew rate must cover the fastest required output transition. Also verify the input bias current against the signal-source impedance and confirm stability with the intended capacitive load before releasing the layout.
The MC34072DR2G and MC34072DR2 are listed as complete replacements for the MC34072D, but ordering suffixes can still identify different temperature grades or packing configurations. Confirm the exact suffix, grade, and package against the incoming requirement. Do not treat parts with different pin counts or dual-amplifier configurations as drop-in substitutes.
Uyumluluk Bilgisi
RoHS, REACH, halogen-free, and conflict-minerals declarations were not stated in the product information used for this page. The MC34072 is an industrial operational amplifier and is not an automotive-qualified device.