MC3303DR - Quad 30V 1MHz Operational Amplifier | Texas Instruments
N.º de pieza: MC3303DR ✓ ActivoMC3303DR Descripción general
An operational amplifier, or op amp, is a high-gain differential amplifier that uses feedback to control gain, impedance, bandwidth, and output behavior. The MC3303 belongs to the general-purpose amplifier hierarchy: operational amplifier, voltage-feedback amplifier, analog amplifier, and integrated circuit. Its low-power quad configuration is intended for cost-sensitive designs requiring several independent amplifier channels on a compact PCB footprint.
The primary performance characteristics include a 1-MHz gain-bandwidth product, a 30-V maximum operating rating in the product designation, and operation from a 3-V to 36-V single supply. Split-supply operation is also possible when the total supply range is respected. A class AB output stage supports linear operation, while true differential inputs provide the conventional non-inverting and inverting input arrangement expected by general-purpose amplifier designs.
Internal frequency compensation removes the need for an external dominant compensation capacitor in ordinary closed-loop applications. Short-circuit protection improves robustness when an output is driven into a low-impedance load. These features simplify implementation, but the amplifier still requires careful common-mode, output-swing, stability, and supply-decoupling analysis for each specific circuit.
Typical uses include four-channel sensor conditioning, instrumentation buffering, low-frequency active filtering, general signal amplification, and industrial control interfaces. The MC3303DR is particularly appropriate when a quad low-power package, wide single-supply range, and moderate 1-MHz bandwidth are more important than rail-to-rail input or output operation.
During PCB design, place input, output, and supply bypass components close to their associated pins. Keep sensitive input traces away from switching nodes and high-current return paths. Verify output-voltage headroom, common-mode range, load stability, and power dissipation across temperature before treating the nominal supply limits as usable design limits.
This product data combines manufacturer information, package and lifecycle details, practical design guidance, and same-footprint replacement options. It also identifies the electrical checks engineers should perform before replacing the MC3303DR in an existing instrumentation or control design.
Alternativas directas para MC3303DR — 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 MC3303DR (mismo factor de forma y huella) — difiere en Number of Amplifiers, Operating Temperature Range, Package, Mounting Type, Amplifier Type.
MC3403D
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$0.4102 / unidad
Ver hoja de datos →MC3403DR
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
LM324DR
✅ Sustitución directa ⚠️ Especificaciones sin verificarConsulte el precio
Ver hoja de datos →LM324ADT
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
LM324AN
✅ Sustitución directa ⚠️ Especificaciones sin verificarConsulte el precio
Ver hoja de datos →MC3303DR Valores máximos y características eléctricas
| Number of Amplifiers | 4 channels |
| Amplifier Type | General-purpose operational amplifier |
| Gain-Bandwidth Product | 1 MHz |
| Maximum Supply Voltage | 30 V |
| Single-Supply Operating Range | 3 V to 36 V |
| Output Stage | Class AB |
| Input Architecture | True differential input |
| Frequency Compensation | Internal |
| Output Protection | Short-circuit protection |
| Rango de temperatura de funcionamiento | -40°C to +85°C |
| Encapsulado | SOIC (D), 14 pins |
| Tipo de montaje | Surface mount |
| Packing Type | Tape and reel |
| Number of Inputs and Outputs per Amplifier | 2 inputs and 1 output per channel |
Configuración de pines de MC3303DR
| Pin 1 | OUT1 — Amplifier 1 output |
| Pin 2 | -IN1 — Amplifier 1 inverting input |
| Pin 3 | +IN1 — Amplifier 1 noninverting input |
| Pin 4 | +IN2 — Amplifier 2 noninverting input |
| Pin 5 | -IN2 — Amplifier 2 inverting input |
| Pin 6 | OUT2 — Amplifier 2 output |
| Pin 7 | OUT3 — Amplifier 3 output |
| Pin 8 | -IN3 — Amplifier 3 inverting input |
| Pin 9 | +IN3 — Amplifier 3 noninverting input |
| Pin 10 | +IN4 — Amplifier 4 noninverting input |
| Pin 11 | -IN4 — Amplifier 4 inverting input |
| Pin 12 | OUT4 — Amplifier 4 output |
| Pin 13 | V- — Negative supply connection |
| Pin 14 | V+ — Positive supply connection |
Aplicaciones típicas
MC3303DR es adecuado para 7 aplicacións: Industrial Sensor Conditioning, Instrumentation Buffering, Low-Frequency Active Filters, Audio Preamplifier Stages, General-Purpose Signal Amplification, Power-Supply Feedback and Monitoring, Embedded Control Interfaces.
Industrial Sensor Conditioning
The MC3303DR fits four-channel industrial sensor conditioning when the signals are low-frequency and the design does not require rail-to-rail operation. Its four amplifiers can handle noninverting, inverting, difference, and gain stages on one 14-pin SOIC footprint. The 1-MHz gain-bandwidth product supports bandwidths well below the amplifier unity-gain frequency in practical closed-loop circuits, while internal compensation simplifies standard feedback configurations. The 3 V to 36 V single-supply range accommodates many industrial rails. Designers should still verify that sensor output levels remain inside the common-mode range and that the output swing leaves sufficient margin for the required measurement span.
Recomendado
Instrumentation Buffering
The MC3303DR is useful as a four-channel instrumentation front end when several low-impedance sensor outputs must be buffered before an ADC. Each channel can provide voltage gain and isolation without requiring four separate packages, reducing PCB area and simplifying routing. Its true differential inputs suit conventional positive and negative amplifier inputs, and the 1-MHz bandwidth is appropriate for many pressure, temperature, and position-sensing stages operating at low or moderate frequencies. Input bias current, offset voltage, and common-mode limits should be matched to the sensor source impedance to prevent measurement error, particularly when precision measurements are required.
Recomendado
Low-Frequency Active Filters
The MC3303DR can implement active low-pass, high-pass, and band-pass sections when four amplifier channels are available on a compact board. A 1-MHz gain-bandwidth product provides useful closed-loop bandwidth for audio-adjacent and control-signal filtering, provided each stage is compensated for the intended noise gain. Internal frequency compensation removes the need for a conventional external dominant capacitor, making multistage filter implementation straightforward. Component tolerances and temperature drift remain important for accurate cutoffs, and capacitive loading can affect stability. Validate the complete filter response with the final source and load impedances rather than relying only on nominal resistor and capacitor values.
Recomendado
Audio Preamplifier Stages
The MC3303DR can serve in moderate-bandwidth audio preamplifier and mixer circuits where four general-purpose amplifier channels offer a compact implementation. The 1-MHz gain-bandwidth product is appropriate for many line-level audio paths, and the class AB output stage supports conventional linear operation. Internal frequency compensation simplifies conventional noninverting and inverting gain stages, while short-circuit protection adds robustness near output connections. For low-noise audio designs, compare the input-voltage-noise and input-bias-current limits against the source impedance, and confirm that the required output level remains within the device’s output-swing capability.
Recomendado
General-Purpose Signal Amplification
The MC3303DR is suitable for miscellaneous analog signal amplification in control boards, test fixtures, and embedded interfaces. Four independent channels allow standard noninverting, inverting, summing, or differential-amplifier configurations without increasing the number of amplifier packages. Its 3 V to 36 V single-supply capability supports a broad range of system rails, and the 14-pin SOIC simplifies assembly and PCB layout. The 1-MHz bandwidth is more than adequate for many low-frequency paths, but engineers should account for finite output swing, input common-mode restrictions, output-current limits, and stability when driving capacitive or nonlinear loads.
Recomendado
Power-Supply Feedback and Monitoring
The MC3303DR can monitor several power rails or provide amplification around a power-control feedback network in a low-frequency analog system. Its single-supply operation from 3 V to 36 V is useful when the monitored rails lie within that range, and short-circuit protection provides a degree of output robustness. Four channels can perform scaling, level shifting, difference measurement, and fault-signal conditioning. Designers must verify the input common-mode range for each monitored voltage, ensure the output does not exceed the allowed swing, and account for supply-current dissipation. Filtering or averaging may also be required if the power rails contain significant ripple.
Recomendado
Embedded Control Interfaces
The MC3303DR is appropriate for embedded interface conditioning around slow analog sensors, actuator feedback loops, and general control signals. A compact 14-pin SOIC preserves board area, while four channels can service independent I/O conditioning paths. The 1-MHz bandwidth supports many sensor and control-loop signals, and the wide single-supply range simplifies compatibility with industrial and embedded rails. Practical designs should provide local bypass capacitance, maintain short input routes, and verify that logic-level signals fall within the amplifier’s common-mode limits. For high-speed links or precision conversion stages, a higher-bandwidth or rail-to-rail amplifier may provide a better fit.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MC3303DR — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MC3403D | MC3403DR | LM324DR | LM324ADT | LM324AN |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | SOIC-14 (D) | SOIC-14 (D) - same | SOIC-14 (D) - same | SOIC-14 (D) - same | SOIC-14 (D) - same | SOIC-14 (D) - same |
| Number of Amplifiers | 4 channels | 4 channels | 4 channels | 4 channels | 4 channels | 4 channels |
| Frequency Compensation | Internal | Internal | Internal | Internal | Internal | Internal |
| Short-Circuit Protection | Yes | Yes | Yes | Yes | Yes | Yes |
Diferenciadores clave
- Four general-purpose channels in one 14-pin SOIC (frente a LM324ADT)
- Specified 1-MHz gain-bandwidth product (frente a MC3403DR)
- Wide 3 V to 36 V single-supply operation (frente a LM324DR)
- Class AB output stage with short-circuit protection (frente a LM324AN)
Notas de diseño
Place the supply bypass capacitor and the two bias resistors near pins 13 and 14, and keep each amplifier’s input network close to its input pins. Route high-current outputs away from the noninverting and inverting inputs to minimize capacitive and resistive coupling. The 14-pin SOIC has no exposed pad, so thermal performance depends primarily on the PCB copper area and the dissipation in each output stage.
Do not assume that a 3 V or 36 V supply allows full input and output swing. Confirm the common-mode input range and output-voltage limits from the manufacturer data sheet before scaling signals. For single-supply operation, bias the signal into the usable input range, and check the output against the required load current and temperature. Also verify that the final feedback topology remains stable with the actual load capacitance.
Estimated: use P = (VIN - VOUT) × IOUT to estimate dissipation in each amplifier, then multiply by four when all channels carry similar load. For example, 12 V input, 5 V output, and 10 mA per channel gives approximately 70 mW per amplifier and 280 mW total. Actual dissipation and junction temperature depend on the common-mode input voltages, output stage behavior, package thermal resistance, PCB copper, and ambient temperature.
Keep feedback resistors close to their corresponding amplifier pins and avoid long loops around the amplifier. The 1-MHz gain-bandwidth product limits usable closed-loop bandwidth and phase margin, especially at high noise gain. Use conventional low-pass filtering where necessary, and test with realistic source and load impedances because high source resistance can increase offset and noise while capacitive loading can introduce instability.
Información de cumplimiento
Compliance declarations for the exact MC3303DR ordering code were not identified in the technical search results. Obtain current declarations from the manufacturer before using these fields for environmental or procurement reporting.
