MC3303PW - 30V 1MHz Quad Op Amp | Texas Instruments
部品番号: MC3303PW ✓ 生産中MC3303PW 概要
An operational amplifier, or op amp, is an analog integrated circuit that amplifies the difference between two input voltages. The MC3303 belongs to the linear amplifier hierarchy, where four independent amplifiers share one package. Each channel combines a true differential input stage, a Class AB output stage, internal frequency compensation, and short-circuit protection. These features simplify circuit design because external compensation networks are not required for typical closed-loop amplifier configurations.
The MC3303's principal operating characteristics include a 1 MHz gain-bandwidth product, support for supply voltages from 3 V to 36 V, and an operating temperature range from -40 °C to 85 °C. Its low-power design is intended for general-purpose analog systems where four amplifier channels, compact packaging, and flexible supply operation are more important than rail-to-rail input or output capability. Input common-mode and output swing limits must be checked against the actual supply voltage before the circuit is finalized.
The true differential input stage supports common-mode input operation while reducing output offset resulting from common input signals. A Class AB output stage supports bidirectional output current without the crossover distortion associated with complementary Class B stages. Internal frequency compensation makes the device convenient for unity-gain voltage followers, amplifiers, comparators, and basic active-filter blocks, although the stable operating range and output-drive requirements depend on the selected closed-loop gain.
Typical uses include four-channel sensor amplification, industrial transducer interfaces, low-frequency audio mixing, buffered instrumentation, active filtering, and general voltage amplification. The 14-pin TSSOP package reduces board area compared with a larger through-hole package, while its exposed thermal behavior and power dissipation should be considered when all four channels operate continuously at high output voltage and current.
For stable operation, place input and feedback components close to the relevant pins, route return currents directly to the ground connection, and avoid long high-impedance traces near the amplifier inputs. Use the manufacturer pin-description table to assign the four amplifier sections and power pins. Check input range, output swing, load current, supply headroom, and thermal rise together. This page also organizes pin compatibility, selection trade-offs, application guidance, and design checks into one engineering-focused reference.
ドロップイン代替品: MC3303PW — 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。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: MC3303PW （同一形状・フットプリント） — 相違点: Frequency Compensation, Operating Temperature Range, Package.
MC3403PW
✅ ドロップイン価格はお問い合わせください
データシートを見る →MC3303PWE4
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC3303PW 最大定格＆電気的特性
| Amplifier Type | Quad general-purpose operational amplifier |
| Number of Amplifiers | 4 channels |
| Maximum Supply Voltage | 30 V |
| Single-Supply Operating Range | 3 V to 36 V |
| Dual-Supply Total Voltage Range | 3 V to 36 V |
| Gain-Bandwidth Product | 1 MHz |
| パッケージ | 14-pin TSSOP (PW) |
| 動作温度範囲 | -40 °C to 85 °C |
| Output Stage | Class AB |
| Input Stage | True differential input stage |
| Frequency Compensation | Internal frequency compensation |
| Output Protection | Short-circuit protection |
| 実装タイプ | Surface mount |
MC3303PW 14-pin tssop (pw) ピン配置ガイド
MC3303PW (14-pin tssop (pw) 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: MC3303PW.
詳細は データシート をご参照ください。
主な用途
MC3303PW の用途: 6 件s: Industrial Sensor Signal Conditioning, Buffered Instrumentation Amplifier Stages, Low-Frequency Audio Mixing, Active Filter and Equalization, Comparator and Threshold Detection, Portable and Low-Power Control Systems.
Industrial Sensor Signal Conditioning
The MC3303PW fits four-channel industrial sensor conditioning because it combines four true differential-input amplifiers, internal frequency compensation, and a 3 V to 36 V supply range in one 14-pin TSSOP. Place each channel around a bridge, transducer, or low-level sensor output, then use the differential inputs to reject common-mode noise before a lower-level ADC. Its 1 MHz gain-bandwidth product is suitable for low-bandwidth process-control signals rather than high-speed sensing. Confirm the selected sensor output against the amplifier's common-mode input range and verify output swing under the worst-case load. Short-circuit protection adds robustness around external wiring, while the shared package means all four channels must be included in the thermal budget.
おすすめ
Buffered Instrumentation Amplifier Stages
The MC3303PW can provide the first differential buffering stage of a low-frequency instrumentation design because each channel uses a true differential input architecture and operates from supplies as high as 36 V. A practical implementation uses two matched amplifier channels for input conditioning and additional channels for reference or output buffering. The internal frequency compensation reduces the need for external compensation in ordinary closed-loop configurations, while the 1 MHz bandwidth supports measurement signals below the higher-frequency audio range. Check input bias current against high-impedance sensors, evaluate offset error at the required gain, and keep feedback resistors close to the relevant amplifier pins to minimize parasitic effects.
おすすめ
Low-Frequency Audio Mixing
The MC3303PW is appropriate for compact low-frequency audio preamplifier and mixing circuits because four independent Class AB output amplifier channels are integrated into one package. The Class AB architecture supports bidirectional output current for driving the input of another stage or a conventional audio output network, while the 1 MHz gain-bandwidth product provides useful bandwidth for many audio-band signals. The MC3303 is not described as rail-to-rail, so the circuit must keep inputs and outputs within the manufacturer's common-mode and swing limits. Verify capacitive-load stability, headroom, distortion, and thermal rise with the intended impedance and level. The 14-pin TSSOP also supports compact mixer-board layouts without requiring four separate amplifier packages.
おすすめ
Active Filter and Equalization
The MC3303PW can implement first-order active filters, equalization stages, and small-signal conditioning blocks in audio, control, and measurement systems. Its four channels reduce the number of packages needed for multi-band networks, and the internally compensated amplifiers are convenient for unity-gain buffers as well as conventional inverting and non-inverting gain stages. The 1 MHz gain-bandwidth product should be compared with the target filter's closed-loop bandwidth and phase requirements at the actual noise gain. Use the manufacturer datasheet to calculate gain-bandwidth behavior and verify that component tolerances dominate the intended accuracy. Keep sensitive summing nodes compact and provide grounding that returns directly beneath the amplifier to minimize interaction between four active channels.
おすすめ
Comparator and Threshold Detection
The MC3303PW can also function as a comparator for slow-changing industrial or analog signals because its differential input and short-circuit protection support basic threshold-detection circuits. Open-loop operation requires attention to output saturation, input offset, and propagation delay, and the device should not be selected for precision zero-crossing detection without reviewing those limits. The 1 MHz gain-bandwidth product permits useful response beyond very slow DC thresholds, but the internal compensation and output behavior still govern practical switching speed. Use separate pull-up or pull-down arrangements where the required logic levels differ from the amplifier's output voltage range. Confirm input recovery after overdrive and maintain adequate output-current margin for the attached logic or relay-driver input.
おすすめ
Portable and Low-Power Control Systems
The MC3303PW fits compact control systems that require multiple low-frequency analog channels and a relatively wide supply-voltage range. The four-amplifier arrangement can condition sensor inputs, buffer control references, and provide auxiliary signal paths within the same 14-pin TSSOP. Its low-power family positioning is valuable where a rail-to-rail precision amplifier is not required, while the 3 V minimum total supply permits operation from a modest regulated source. Actual suitability depends on the source impedance and output load because input bias current, quiescent current, and output-drive data determine accuracy and efficiency. Validate the complete analog path at the lowest supply voltage, highest temperature, and maximum expected load, then include the combined four-channel dissipation in the enclosure thermal design.
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: MC3303PW — 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 | MC3403PW | MC3303PWE4 |
|---|---|---|---|
| Package | 14-pin TSSOP (PW) | 14-pin TSSOP (PW) | 14-pin TSSOP (PW) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Amplifier Count | 4 channels | 4 channels | 4 channels |
| Output Stage | Class AB | Class AB | Class AB |
| Input Stage | True differential input stage | True differential input stage | True differential input stage |
| Frequency Compensation | Internal | Internal | Internal |
主な差別化要因
- Four amplifiers in one compact package （vs MC3403PW)
- Wide single- and dual-supply operating range （vs MC3303PWE4)
- Integrated precision functions reduce external circuitry （vs MC3403PW)
設計ノート
Estimated: calculate dissipation by multiplying the summed supply currents of all four channels by the applicable total supply voltage, then subtracting the power delivered to the external loads. Verify the calculation at maximum signal frequency, highest expected load, and maximum temperature. Because four amplifiers share one TSSOP package, one heavily loaded channel affects the junction temperature of every channel and may make unused-channel current reduction worthwhile.
Place each amplifier's feedback resistors and input components directly beside the corresponding pins. Keep high-impedance input traces short, avoid routing them parallel to switching-converter paths, and connect the ground reference to the package ground pin through a low-impedance path. For multi-channel boards, group each channel's signal components and provide adequate copper around the TSSOP so heat from adjacent circuitry does not create uneven channel temperatures.
Do not assume rail-to-rail input or output behavior. Check that the sensor or source voltage remains inside the common-mode input range and that the required output level remains inside the output swing for the selected supply voltage. Also account for input offset, bias-current error with high source resistance, and stability at the intended closed-loop gain. The 30 V maximum rating is an absolute limit, not a recommended operating point.
コンプライアンス情報
The manufacturer product and datasheet links should be checked for the current declarations associated with the exact MC3303PW ordering code.
