MC3303PT - Quad 1 MHz Low-Power Op Amp | STMicroelectronics
N.º da peça: MC3303PT ✓ AtivoMC3303PT Visão geral
An operational amplifier is a voltage-amplifying semiconductor in the amplifier IC category. It compares an input voltage with a feedback-defined reference voltage and drives its output to reduce the difference between them. The MC3303PT belongs to the broader low-power operational-amplifier family and provides four internally compensated amplifiers with true differential inputs in one package.
The MC3303PT supports single-supply operation up to 36 V and dual-supply operation up to ±18 V. Its maximum input-bias current is 500 nA, which helps limit the current required from high-impedance signal sources. The device also provides short-circuit-protected outputs, an internally compensated Class AB output stage, and electrical characteristics described as similar to the widely used UA741.
Each amplifier channel is internally compensated, allowing operation as a closed-loop amplifier without external compensation components. The Class AB output stage is intended to provide low crossover distortion while avoiding the continuous conduction characteristic of a purely class A output stage. The quad package is useful when four channels can share the same supply rails and ground reference.
Typical applications include low-frequency instrumentation amplifiers, signal buffers, active filters, transducer interfaces, sensor signal conditioning, and general analog signal-processing chains. The 1 MHz gain-bandwidth product is suitable for moderate-bandwidth closed-loop stages rather than high-speed video or RF amplification.
For new designs, verify the input common-mode range, output swing, input-offset voltage, input-bias current, and output-current capability in the manufacturer datasheet against the actual signal range. Decoupling capacitors should be placed close to the supply pins, and each unused amplifier channel should be configured according to the manufacturer's recommended stable-input arrangement rather than left floating.
This product page organizes the confirmed MC3303PT characteristics, package information, application guidance, and sourcing path into an engineering-focused reference. It also distinguishes verified device attributes from parameters that require confirmation from the complete manufacturer datasheet before layout, simulation, or production release.
Alternativas drop-in para MC3303PT — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Nenhuma alternativa drop-in disponível para este produto.
Solicitar alternativasMC3303PT Classificações máximas e características elétricas
| Amplifier Type | General-purpose bipolar operational amplifier |
| Number of Amplifiers | 4 circuits |
| Gain-Bandwidth Product | 1 MHz |
| Maximum Total Supply Voltage | 36 V |
| Maximum Total Supply Voltage, Dual Supply | ±18 V |
| Minimum Single-Supply Operating Voltage | 3 V |
| Input Bias Current | 500 nA maximum |
| Input Configuration | True differential inputs |
| Compensation | Internally compensated |
| Output Stage | Class AB |
| Output Protection | Short-circuit protected |
| Encapsulamento | 14-pin TSSOP |
| Shipping Package | Tape and reel |
Guia de Configuração de Pinos do MC3303PT tape and reel
Configuração de pinos para MC3303PT (pacote tape and reel). Este componente analógico possui pinos de entrada, saída e alimentação. Consulte o datasheet do fabricante para configurações de offset null, compensação e pino de enable. Ideal para circuitos de condicionamento de sinal e amplificadores.
Nenhum dado detalhado de pinagem disponível para MC3303PT.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
MC3303PT é adequado para 6 aplicaçãos: Low-Frequency Instrumentation Signal Conditioning, Sensor Interface and Transducer Amplification, Active Filter and Equalization Stages, Industrial Control and Process Signal Buffering, Audio Preamplifier and Mixer Front End, Power Supply Feedback and Voltage Monitoring.
Low-Frequency Instrumentation Signal Conditioning
The MC3303PT fits low-frequency instrumentation chains requiring four channels in one 14-pin TSSOP package. Each channel provides true differential inputs, internal compensation, and a 1 MHz gain-bandwidth product, allowing the same device to support gain, buffering, and active filtering functions. The 500 nA maximum input-bias current helps reduce loading on high-impedance transducers, while operation from 3 V to 36 V provides flexibility across single- and dual-supply systems. Confirm the input common-mode range, output swing, and offset voltage for the transducer output before finalizing the signal path.
Recomendado
Sensor Interface and Transducer Amplification
The MC3303PT is suitable for sensor interfaces that require differential input amplification close to the transducer. Its true differential inputs reduce sensitivity to common-mode interference, while the 500 nA maximum input-bias current limits disturbance of high-source-impedance sensors. Four channels in one 14-pin TSSOP package can reduce board area when several sensor signals require buffering or gain. Gain-bandwidth and slew-rate checks are necessary because the stated 1 MHz product becomes narrower at higher closed-loop gain, and the selected sensor signal must remain inside the amplifier input and output ranges.
Recomendado
Active Filter and Equalization Stages
The MC3303PT can implement active low-pass, high-pass, and general-purpose filter sections when moderate bandwidth and low-power operation are sufficient. Its internally compensated channels simplify closed-loop filter design, and the quad arrangement permits several filter stages to share one 14-pin TSSOP package. The 1 MHz gain-bandwidth product supports low-to-moderate audio and instrumentation frequencies, but actual usable bandwidth depends on closed-loop gain, load, output swing, and stability. Simulate the complete filter against component tolerances because the amplifier’s offset voltage and slew rate can influence distortion and transient response.
Recomendado
Industrial Control and Process Signal Buffering
The MC3303PT is appropriate for buffering control and process signals when the system requires four low-power amplifier channels on a shared supply. It accepts single supplies as low as 3 V or dual supplies up to ±18 V, making it useful for mixed analog control boards. The short-circuit-protected outputs and Class AB output stage support general-purpose operation, but output drive into long cables or heavy loads should be verified separately. Maintain the input common-mode voltage within the operating region and use nearby supply decoupling to limit impedance-related noise pickup.
Recomendado
Audio Preamplifier and Mixer Front End
The MC3303PT can provide low-frequency preamplifier, mixer, or impedance-conversion functions in cost-sensitive audio electronics. Four channels in a 14-pin TSSOP package simplify board allocation, and the 1 MHz gain-bandwidth product is compatible with audio-band circuitry rather than video-rate amplification. The Class AB output stage and short-circuit protection are useful for general analog signal paths, although the input-offset and output-swing limits must be checked against the microphone and mixer levels. An audio-specific low-noise amplifier may offer better performance when noise dominates the design.
Recomendado
Power Supply Feedback and Voltage Monitoring
The MC3303PT can monitor or buffer low-bandwidth power-supply signals because it operates from 3 V to 36 V and includes four short-circuit-protected amplifier channels. A channel can sense a divided feedback node, buffer an error signal, or interface an analog measurement to a controller. The 1 MHz bandwidth is more than adequate for typical slow regulation loops, while true differential inputs can reject common-mode variation. The design must keep the feedback node inside the input common-mode range and account for input offset and bias current when setting high-impedance divider values.
Recomendado
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Dados de referência de engenharia para MC3303PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Notas de projeto
Do not treat every quad operational amplifier as a drop-in replacement merely because it has a 14-pin package. Verify the MC3303PT pin assignments, supply limits, input common-mode range, output swing, input offset, bias current, and stability requirements against the complete manufacturer datasheet. A replacement that preserves the package outline can still be electrically incompatible if any pin function, voltage range, or compensation characteristic differs.
Place the supply-decoupling capacitor close to the device power pins and connect it with a short, low-inductance path. Keep sensitive amplifier inputs away from switching nodes, high-current returns, and connector wiring. The 14-pin TSSOP footprint provides limited lead spacing, so conservative routing and adequate ground-plane continuity are important. Review the recommended land pattern and exposed thermal behavior in the package documentation before releasing the PCB artwork.
Choose the supply configuration around the actual signal range rather than relying only on the 36 V maximum rating. Single-supply operation starts at 3 V, but the usable input and output range depends on the supply voltage and amplifier configuration. Grounding all four channels to the same quiet reference and checking output loading helps prevent saturation and channel-to-channel interaction. For precision measurements, evaluate input bias current and offset against the source impedance.
Use the stated 1 MHz gain-bandwidth product to estimate practical closed-loop bandwidth rather than treating it as a constant operating frequency. Higher closed-loop gain reduces usable bandwidth, and large capacitive loads can affect stability and transient response. Keep feedback paths short and place compensation or filter components close to their associated pins. Verify settling time and slew-rate requirements in simulation before using the device for precision step-response measurements.
Informações de conformidade
The MC3303PT is a general-purpose operational amplifier rather than an automotive-qualified device. RoHS, REACH, lead-free, halogen-free, and conflict-minerals status require confirmation from the current manufacturer product documentation or declaration.
