MC33077P - 37 MHz Low-Noise Dual Op Amp | onsemi
部品番号: MC33077P ✓ 生産中MC33077P 概要
An operational amplifier, or op amp, is an analog active device that amplifies the difference between two input voltages. The MC33077P contains two independent amplifier circuits in one monolithic package, making it a dual op amp. Within the product hierarchy, it belongs to the operational amplifier and analog amplifier categories, where it provides a higher-speed alternative to general-purpose precision amplifiers.
The MC33077 family uses innovative bipolar construction, analog resistor trimming, and dual-doublet frequency compensation. Analog trimming is used to obtain low input offset voltages, while the precision-matching approach supports closely matched amplifier channels. These techniques support applications in measurement systems, audio and communication circuits, active filters, and low-level analog signal chains.
Verified distributor information identifies the MC33077P as a 2-circuit, 8-PDIP general-purpose amplifier with 37 MHz bandwidth. A separate distributor listing reports an 11 V/µs slew rate, indicating that the device can support signal transitions well beyond audio frequencies when the surrounding circuit permits. Exact noise density, input bias current, input offset voltage, supply-current, and common-mode limits were not included in the supplied verification data and must be confirmed against the manufacturer datasheet before design release.
Typical uses include instrumentation preamplification, active filtering, audio signal conditioning, and general high-frequency analog processing. In a typical signal chain, the device would follow a low-amplitude sensor or filter stage and drive a higher-impedance ADC input, buffer, or measurement front end. Because the amplifiers are internally matched, dual-channel differential or ratiometric measurements are practical when board layout and resistor matching are controlled.
The primary design consideration is ensuring that the surrounding circuit does not degrade the amplifier's noise and accuracy performance. Place decoupling capacitors close to the supply pins, keep feedback-loop routing short, and avoid parasitic capacitance on high-impedance input nodes. Confirm the exact pinout, supply range, noise specifications, input common-mode limits, and output-current capability in the onsemi MC33077 datasheet before layout release.
ドロップイン代替品: MC33077P — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
この製品に利用可能なドロップイン代替品はありません。
代替品をリクエストMC33077P 最大定格＆電気的特性
| Amplifier Type | General-purpose operational amplifier |
| Number of Amplifier Circuits | 2 circuits |
| Gain-Bandwidth Product | 37 MHz |
| Slew Rate | 11 V/µs |
| Internal Technology | Bipolar |
| パッケージ | 8-pin PDIP |
| ピン数 | 8 pins |
| 実装タイプ | Through-hole |
| Frequency Compensation | Dual-doublet frequency compensation |
| Input Offset Trimming | Analog resistor trim technique |
| Channel Matching | Precision matching |
MC33077P 8-pin pdip ピン配置ガイド
MC33077P (8-pin pdip パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: MC33077P.
詳細は データシート をご参照ください。
主な用途
MC33077P の用途: 6 件s: Instrumentation Signal Conditioning, Active Filters and Equalization, Audio Preamplification and Buffering, Sensor Interface and Current-to-Voltage Conversion, Communications Receive Chain, Test and Measurement Buffering.
Instrumentation Signal Conditioning
The MC33077P fits low-level instrumentation front ends because it combines two matched amplifier channels with a verified 37 MHz gain-bandwidth product and 11 V/µs slew rate. Both channels can process related sensor signals, supporting differential and ratiometric measurements when board symmetry and resistor matching are maintained. The amplifier is typically placed near the sensor or bridge network to minimize noise pickup before the signal reaches an ADC. Its bipolar implementation and analog resistor trimming are intended to produce low input offset voltage, although the exact offset and noise-density figures must be taken from the onsemi datasheet before the circuit gain is finalized.
おすすめ
Active Filters and Equalization
The MC33077P is appropriate for active filter and equalization stages requiring more bandwidth than a conventional precision op amp. Its 37 MHz gain-bandwidth product provides design margin for moderate-gain sections, while the 11 V/µs slew rate limits large-signal distortion at higher frequencies. The dual configuration allows two filter sections to be implemented without separate packages, which can simplify channel matching. Because compensation and stability behavior must be evaluated with the exact filter topology, engineers should follow the manufacturer application guidance and verify noise and output-drive limits in the MC33077 datasheet.
おすすめ
Audio Preamplification and Buffering
The MC33077P can serve as a dual low-noise preamplifier or buffer in audio equipment, including stereo line-level conditioning and active equalization. The manufacturer identifies the device as a low-noise bipolar dual operational amplifier, while verified distributor data confirms a 37 MHz gain-bandwidth product and 11 V/µs slew rate. Those characteristics provide ample frequency margin for audio-band signals and moderate oversampling stages. Exact input-noise density, bias current, and output-current capability were not supplied, so they must be checked before using the part with very high-impedance microphones or driving low-impedance headphone loads directly.
おすすめ
Sensor Interface and Current-to-Voltage Conversion
The MC33077P is well suited to transimpedance and sensor-interface stages where the amplifier must combine low offset behavior with a comparatively high bandwidth. The analog resistor-trimming technique described in the onsemi MC33077 datasheet is used to obtain low input offset voltage, while the two channels can implement a noninverting and inverting path for a differential sensor. A 37 MHz bandwidth and 11 V/µs slew rate provide useful headroom in feedback networks. Nevertheless, high-value feedback resistors increase thermal noise and bias-current error, so the exact noise and bias specifications are essential before finalizing the gain.
おすすめ
Communications Receive Chain
The MC33077P can be evaluated in intermediate-frequency and baseband receive chains where the 37 MHz gain-bandwidth product exceeds the signal bandwidth. The 11 V/µs slew rate offers better large-signal margin than slow precision amplifiers, reducing distortion in gain stages that handle larger waveforms. Its two amplifier circuits allow parallel processing of in-phase and quadrature channels, and the manufacturer-described precision matching supports channel consistency. RF coupling, impedance matching, and shielding require separate control; the verified data does not specify input impedance or noise density, so those values must be confirmed in the manufacturer datasheet.
おすすめ
Test and Measurement Buffering
The MC33077P is useful in test and measurement equipment as an input buffer or driver where source impedance, capacitance, and bandwidth vary. The 37 MHz gain-bandwidth product and 11 V/µs slew rate give designers more margin than a unity-gain-stable general-purpose amplifier when driving ADC inputs or subsequent instrumentation stages. Two channels can buffer complementary or sequential measurements while maintaining consistent behavior. The package must be assessed against the instrument's mechanical constraints because the MC33077P is specified in an 8-pin PDIP rather than a surface-mount package, and exact noise specifications should be confirmed before using it with high-impedance sources.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: MC33077P — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 |
|---|---|
| Package | 8-pin PDIP |
| Brand | onsemi |
| Amplifier Circuits | 2 circuits |
| Gain-Bandwidth Product | 37 MHz |
| Slew Rate | 11 V/µs |
| Internal Technology | Bipolar |
| Amplifier Classification | Standard general-purpose amplifier |
| Offset-Voltage Reduction Method | Analog resistor trim technique |
| Frequency Compensation | Dual-doublet compensation |
| Quote-Required Unit Price | $0.00 placeholder as of 2026-10-30 |
主な差別化要因
- Substantially higher bandwidth than conventional general-purpose precision amplifiers （vs LM224DR)
- Two-channel implementation with manufacturer-described precision matching （vs NE5534DR)
- Higher slew-rate margin for moderate-gain signal-conditioning stages （vs TLV1504ID)
設計ノート
Place the supply bypass capacitor immediately across the amplifier's supply pins, and keep both channels' feedback resistors and compensation components close to the package. High-value feedback resistors can increase Johnson noise and amplify bias-current error, particularly in instrumentation circuits. Route sensitive input traces away from switching nodes and analog ground returns. Because the verified search data did not include the manufacturer's complete recommended-layout values, use the onsemi MC33077 datasheet application information as the layout authority before fabrication release.
Avoid adding excessive parasitic capacitance to an inverting input or feedback node, because the MC33077P's dual-doublet compensation can make stability sensitive to load and loop gain. Keep input and output paths physically short and terminate unused amplifier channels according to the manufacturer datasheet rather than leaving an open input floating. For long cables or sensor sources, protect the input with suitable biasing and shielding. The 37 MHz bandwidth provides useful headroom, but bandwidth should not be confused with usable low-noise performance at the intended gain.
Do not substitute the MC33077P with a generic dual op amp based only on its 37 MHz bandwidth and 11 V/µs slew rate. A valid alternative must match the 8-pin PDIP footprint, pin assignment, supply range, input common-mode limits, offset voltage, bias current, noise density, and output-current capability. The supplied cross-reference search produced no verified drop-in substitute. Obtain the onsemi MC33077 datasheet and perform a full parameter comparison rather than assuming that similar bandwidth guarantees drop-in interchangeability.
コンプライアンス情報
Compliance declarations were not included in the supplied verified web data. The component is a general-purpose analog operational amplifier rather than an AEC-Q100-qualified automotive device based on the supplied product description.