MC3303DG - 4-Channel 1 MHz Op Amp | onsemi | 14-SOIC
N.º de pieza: MC3303DG ✓ ActivoMC3303DG Descripción general
An operational amplifier is an analog integrated circuit that amplifies the voltage difference between its inverting and non-inverting inputs. In the product taxonomy, the MC3303DG belongs to the operational-amplifier and instrumentation-amplifier hierarchy, then to the broader amplifier IC and semiconductor categories. Its internally compensated architecture simplifies design by fixing the gain-bandwidth relationship while preserving a practical combination of supply flexibility, low power consumption, and general-purpose functionality.
The principal electrical features include four independent amplifiers, 1 MHz gain-bandwidth product, 0.6 V/us slew rate, and 8 mV input offset voltage as listed for the industrial-temperature version. The device operates from 3 V to 36 V under a single supply, while dual-supply operation remains possible when the total supply span is adequate. A class AB output stage supports practical drive into typical feedback networks, and true differential inputs help reject common-mode signals when both inputs are biased within the common-mode range.
The MC3303 architecture is intended as a cost-conscious alternative to the uA741-class quad amplifier while adding advantages for modern single-supply systems. Internal frequency compensation removes the need for a dominant-pole compensation capacitor in most closed-loop applications. Designers must still account for output swing, input common-mode range, bias current, noise, stability, and supply bypassing when using the amplifier in precision or high-frequency circuits.
Typical applications include industrial control loops, transducer and sensor signal conditioning, audio preamplification, analog measurement front ends, power-supply feedback networks, and low-frequency communications equipment. Four amplifiers in one package can reduce board area in designs requiring multiple independent analog channels, although common supply routing and decoupling remain critical.
The most important design practice is to place input, output, and bypass connections for short, low-impedance paths while keeping sensitive input traces away from power outputs and switching nodes. Verify the exact input and output voltage limits, bias-current behavior, load capability, and noise specifications against the manufacturer datasheet before finalizing a precision application.
This page consolidates verified distributor information, package-specific alternatives, technical comparisons, and practical design guidance for engineers evaluating the MC3303DG. It emphasizes what is confirmed from supplied sources and explicitly marks unavailable electrical details rather than estimating them, supporting more reliable procurement and design decisions.
Alternativas directas para MC3303DG — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con MC3303DG (mismo factor de forma y huella) — difiere en Package, Mounting Type, Number of Amplifiers, Product Type, Frequency Compensation.
MC3303D
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
MC3403D
✅ Sustitución directa ⚠️ Especificaciones sin verificarConsulte el precio
Ver hoja de datos →MC3303N
✅ Sustitución directa ⚠️ Especificaciones sin verificarConsulte el precio
Ver hoja de datos →MC3403N
✅ Sustitución directa ⚠️ Especificaciones sin verificarConsulte el precio
Ver hoja de datos →LM324D
✅ Sustitución directaConsulte el precio
Ver hoja de datos →MC3303DG Valores máximos y características eléctricas
| Product Type | Quad operational amplifier |
| Number of Amplifiers | 4 circuits |
| Amplifier Type | General Purpose |
| Supply Voltage Range, Single Supply | 3 V to 36 V |
| Dual-Supply Voltage Range | +/-1.5 V to +/-18 V |
| Gain-Bandwidth Product | 1 MHz |
| Slew Rate | 0.6 V/us |
| Input Offset Voltage | 8 mV |
| Operating Temperature Class | Industrial temperature |
| Input Stage | True differential |
| Output Stage | Class AB |
| Frequency Compensation | Internal |
| Short-Circuit Protection | Yes |
| Encapsulado | 14-SOIC, 0.154 in x 3.90 mm body width |
| Packaging | Tube |
| Tipo de montaje | Surface mount |
| Total Number of Pins | 14 pins |
Configuración de pines de MC3303DG
| Pin 1 | OUT1 — Amplifier 1 output |
| Pin 2 | IN1- — Amplifier 1 inverting input |
| Pin 3 | IN1+ — Amplifier 1 non-inverting input |
| Pin 4 | V- — Negative supply or ground in single-supply operation |
| Pin 5 | IN2+ — Amplifier 2 non-inverting input |
| Pin 6 | IN2- — Amplifier 2 inverting input |
| Pin 7 | OUT2 — Amplifier 2 output |
| Pin 8 | OUT3 — Amplifier 3 output |
| Pin 9 | IN3- — Amplifier 3 inverting input |
| Pin 10 | IN3+ — Amplifier 3 non-inverting input |
| Pin 11 | V+ — Positive supply |
| Pin 12 | IN4+ — Amplifier 4 non-inverting input |
| Pin 13 | IN4- — Amplifier 4 inverting input |
| Pin 14 | OUT4 — Amplifier 4 output |
Aplicaciones típicas
MC3303DG es adecuado para 6 aplicacións: Industrial Sensor Signal Conditioning, Process Control Loops, Audio Preamplification, Analog Measurement Front Ends, Power Supply Feedback Networks, Low-Frequency Communications.
Industrial Sensor Signal Conditioning
The MC3303DG fits low-frequency industrial sensor-conditioning circuits because its four true-differential amplifier channels, 1 MHz gain-bandwidth product, and 3 V to 36 V single-supply range support common analog front ends. A typical implementation amplifies bridge, level, or position-sensor signals before filtering and conversion. The 0.6 V/us slew rate is generally adequate for slow process signals, while the 8 mV input offset voltage should be checked against the required measurement accuracy. Because each channel has independent inputs and output, designers can use multiple gain stages on one board.
Recomendado
Process Control Loops
The MC3303DG is suitable for industrial process-control error amplifiers, actuator feedback paths, and set-point comparators where several low-frequency channels share a control board. Its 1 MHz gain-bandwidth product supports closed-loop operation well below the device's full small-signal bandwidth, and the 0.6 V/us slew rate provides adequate response for many temperature, pressure, and flow loops. The 14-SOIC package consolidates four channels, but input common-mode range and output swing must remain compatible with the controller supply and sensor signal levels.
Recomendado
Audio Preamplification
The MC3303DG can support microphone, line-level, and headphone-driver preamplifier blocks when the signal bandwidth is modest. Its 0.6 V/us slew rate is suitable for many low-frequency audio paths, and the 1 MHz gain-bandwidth product allows useful closed-loop gain above the audio band when operating at a reasonable noise gain. Four amplifiers in a 14-SOIC package can implement microphone, tone, and auxiliary channels efficiently. Engineers should verify output swing, load capability, input bias behavior, and noise specifications in the manufacturer datasheet for the intended gain and impedance.
Recomendado
Analog Measurement Front Ends
The MC3303DG is useful in general-purpose analog measurement front ends that amplify, scale, and offset sensor outputs before an ADC. Its true differential inputs are particularly relevant when both sides of a differential sensor are available, helping reject common-mode disturbance when the signal remains inside the input common-mode range. A 3 V minimum single supply enables operation from compact 3.3 V or 5 V systems, while the 36 V maximum supports higher industrial rails. The 8 mV offset voltage must be included in the error budget when the measured signal is small.
Recomendado
Power Supply Feedback Networks
The MC3303DG can be used in feedback, current-sense, and auxiliary regulation circuits around low-frequency power-conversion stages. Its 1 MHz gain-bandwidth product and 0.6 V/us slew rate are sufficient for many error amplifiers and monitoring comparators, while the broad 3 V to 36 V supply range supports both low-voltage and industrial systems. Designers should place the amplifier close to the feedback node, keep the high-impedance input route short, and separate it from switching currents. Output drive and stability should be verified for the feedback compensation selected for the target converter.
Recomendado
Low-Frequency Communications
The MC3303DG can provide low-frequency amplification in communications equipment such as audio interfaces, receive-chain blocks, and baseband conditioning circuits. Its 1 MHz gain-bandwidth product is adequate for many voice-band and slow baseband functions, and the 0.6 V/us slew rate helps preserve signal edges without requiring a high-speed amplifier. Four channels in one 14-SOIC package reduce board count. The device is best selected when its 8 mV input offset voltage and single-supply limitations meet the link's noise, bandwidth, and headroom requirements.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MC3303DG — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MC3303D | MC3403D | MC3303N | MC3403N | LM324D |
|---|---|---|---|---|---|---|
| Brand | onsemi | onsemi | onsemi | onsemi | onsemi | Texas Instruments |
| Package | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC |
| Number of Amplifiers | 4 | 4 | 4 | 4 | 4 | 4 |
| Amplifier Type | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose |
Diferenciadores clave
- Four true-differential general-purpose amplifiers in one package (frente a LM324D)
- Broad single-supply operating range (frente a MC3303D)
- Simplified compensated analog design (frente a MC3403D)
- Industrial-temperature source availability (frente a MC3403N)
Notas de diseño
The verified operating range permits a single supply from 3 V to 36 V or split supplies from +/-1.5 V to +/-18 V. Place the primary bypass capacitor immediately across the V+ and V- pins, with a short ground return. Before choosing the supply voltage, verify the actual input common-mode range and output swing at the intended load; a valid nominal supply does not guarantee linear operation near either rail.
Route each non-inverting input as a short, guarded track and connect feedback resistors close to the relevant amplifier pins. High-impedance input nodes are sensitive to leakage and coupling, so keep them away from output pins, supply bypassing current paths, and switching nodes. Maintain a continuous ground plane under the device and return output-load current without forcing it through the input-reference ground path.
Do not assume that four independent channels eliminate the need to check individual stability. Each amplifier's noise gain, feedback values, load capacitance, and output swing determine practical behavior. The verified 1 MHz gain-bandwidth product and 0.6 V/us slew rate are small-signal and slewing limits, while the 8 mV offset can dominate a low-level measurement. Include offset, bias current, common-mode range, and output-current limits in the system error budget.
The MC3303DG is an analog IC rather than a discrete power semiconductor, so no safe-operating-area chart is applicable. Thermal design should nevertheless account for internal power dissipation under sustained output current and elevated ambient temperature. Use the manufacturer's package thermal information and maximum supply-current ratings, maintain PCB copper for heat spreading, and avoid driving loads continuously beyond the datasheet output-current specification.
Información de cumplimiento
The supplied verified search results do not contain explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements. Compliance must be confirmed from current onsemi product documentation before qualification.
