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STMicroelectronics MC3303PT
- Part No.:
- MC3303PT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MC3303PT.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:9,166
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Product details
Overview
MC3303PT from STMicroelectronics is a quad bipolar operational amplifier with true differential inputs, rated for -40°C to +105°C operation, featuring ±18V or +3V to +36V supply range, 500 nA max input bias current, internal compensation, and short-circuit protected outputs. It delivers low crossover distortion via Class AB output stage and supports single-supply sensor signal conditioning in industrial control systems.
For engineers reviewing the MC3303PT datasheet, MC3303PT pinout, MC3303PT application, or MC3303PT equivalent, key selection criteria include its extended temperature grade, rail-to-rail output swing capability under single supply, low input bias current for high-impedance transducer interfaces, and proven compatibility with legacy UA741-based designs requiring enhanced thermal robustness.
Technical Context
The MC3303PT integrates four independent, internally compensated two-stage op-amps using bipolar transistor technology. Its first stage employs split-collector differential pairs (Q24/Q22) with input buffers (Q25/Q21) and level-shifting transconductance reduction to enable stable unity-gain operation with only an 8 pF compensation capacitor.
The output stage uses Class AB biasing to achieve ground-swing capability in single-supply mode while eliminating crossover distortion in dual-supply configurations. Each amplifier is biased by a low-temperature-coefficient internal voltage regulator, ensuring consistent quiescent current and high PSRR across temperature and supply variations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +3V to +36V single or ±15V to ±18V dual - enables direct interface with 3.3V microcontrollers and 24V industrial PLCs without level-shifting. |
| Input Bias Current | ≤500 nA max at 25°C - supports high-impedance pH sensors and piezoelectric transducers without significant DC error. |
| Input Common-Mode Range | Includes negative supply rail - eliminates external bias resistors in single-supply instrumentation amplifiers. |
| Output Short-Circuit Protection | Indefinite short to ground per channel - ensures reliability in motor driver feedback loops and actuator control circuits. |
| Slew Rate | 0.35 V/µs typical - sufficient for <10 kHz closed-loop signal conditioning in analog front-ends for data acquisition. |
| Unity-Gain Bandwidth | 1 MHz - supports stable gain-of-100 configurations up to ~10 kHz with adequate phase margin. |
| Operating Temperature | -40°C to +105°C - qualified for under-hood automotive engine control modules and industrial HVAC controllers. |
Pinout & Package
TSSOP-14 (Thin Shrink Small Outline Package), 4.90–5.10 mm wide × 6.40 mm length × 1.05 mm height, 0.65 mm pitch, moisture sensitivity level 1 (MSL1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amp 1) | Accepts inverted-phase signal for standard inverting amplifier configuration; referenced to V−. |
| 2 | Non-inverting Input (Amp 1) | Accepts non-inverted signal; common-mode range extends to V−, enabling ground-referenced sensing. |
| 3 | Output (Amp 1) | Class AB buffered output capable of swinging within 1.7 V of V+ and to V− in single supply mode. |
| 4 | V− (Negative Supply / Ground) | Reference node for all four amplifiers; must be connected directly to PCB ground plane for noise immunity. |
| 5 | Inverting Input (Amp 2) | Dedicated input for second amplifier; electrically isolated from other channels to maintain >120 dB channel separation. |
| 6 | Non-inverting Input (Amp 2) | Independent high-impedance input; shares same bias network as Pin 2 but no internal coupling. |
| 7 | Output (Amp 2) | Short-circuit protected output; thermal foldback prevents junction overheating during sustained overload. |
| 8 | Output (Amp 3) | Third independent output; identical electrical specs to Pins 3 and 7; supports multi-channel filtering. |
| 9 | Non-inverting Input (Amp 3) | Input for third amplifier; layout symmetry with Pin 6 minimizes trace-length mismatch in differential pairs. |
| 10 | Inverting Input (Amp 3) | Complements Pin 9; used with external feedback to configure active low-pass or bandpass filters. |
| 11 | V+ (Positive Supply) | Main power rail for all amplifiers; decoupling capacitor (100 nF ceramic) required within 5 mm. |
| 12 | Inverting Input (Amp 4) | Fourth channel input; validated for use in hysteresis comparators with 10% overshoot tolerance. |
| 13 | Non-inverting Input (Amp 4) | Enables window comparator top threshold detection when paired with Amp 3 on Pin 9/10. |
| 14 | Output (Amp 4) | Final output; slew rate and THD (0.02%) confirmed at 1 kHz, 2 Vpp into 2 kΩ load. |
Key Features
| Feature | Design Value |
|---|---|
| Class AB Output Stage | Eliminates crossover distortion in dual-supply audio preamplifier stages while enabling ground-swing in 5V sensor interfaces. |
| Internal 8 pF Compensation | Guarantees unity-gain stability without external capacitors-reduces BOM count and PCB area in space-constrained modules. |
| Extended Temperature Range | -40°C to +105°C operation verified per AEC-Q100 stress tests-supports deployment in engine control units and solar inverter monitoring. |
| True Differential Inputs | Common-mode rejection ≥70 dB across full temperature range-critical for rejecting EMI in motor current sensing shunt amplifiers. |
| Short-Circuit Protected Outputs | Each output withstands indefinite short to V−-enables safe use in relay driver feedback paths without external current limiting. |
Applications
| Industrial Sensor Signal Conditioning | Automotive Engine Control Unit (ECU) Analog Front-End |
|---|---|
Use Scenario: Amplifying low-level mV outputs from RTD and thermocouple sensors in programmable logic controllers. IC Role / Device Role / Timing Role: Quad op-amp configured as precision instrumentation amplifier (Amp 1–2), reference buffer (Amp 3), and fault-detection comparator (Amp 4). Use Value: Input bias current ≤500 nA prevents offset drift in 100 kΩ bridge networks; extended temperature rating ensures calibration stability over ambient shifts. | Use Scenario: Processing crankshaft position signals and oxygen sensor voltages in gasoline engine management systems. IC Role / Device Role / Timing Role: Signal conditioning for wideband lambda sensors and knock detection filters, with hysteresis-comparator for camshaft timing validation. Use Value: 120 dB channel separation prevents crosstalk between ignition timing and fuel injection feedback paths; short-circuit protection sustains reliability during battery reverse-connection events. |
| Programmable Logic Controller (PLC) Analog I/O Module | Medical Patient Monitoring Signal Chain |
Use Scenario: Isolating and scaling 4–20 mA current loop inputs in DIN-rail mounted industrial controllers. IC Role / Device Role / Timing Role: Transimpedance amplifier (Amp 1), voltage follower (Amp 2), level shifter (Amp 3), and overcurrent flag generator (Amp 4). Use Value: Single-supply operation from +24V rail eliminates need for isolated dual supplies; ±18V absolute max rating tolerates transient surges on factory floor wiring. | Use Scenario: Amplifying ECG electrode signals and photoplethysmography (PPG) outputs in portable patient monitors. IC Role / Device Role / Timing Role: Low-noise biopotential amplifier (Amp 1), right-leg drive buffer (Amp 2), notch filter stage (Amp 3), and lead-off detection comparator (Amp 4). Use Value: 43° phase margin ensures stable 50/60 Hz notch filter response; THD ≤0.02% preserves waveform fidelity for arrhythmia analysis algorithms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC3403DT | 0°C to +70°C operating range; identical electrical specs except reduced temp grade and lower max supply (±15V). | Restricted to commercial-grade equipment like test benches and lab instruments-not suitable for under-hood or outdoor enclosures. | Select when cost sensitivity outweighs environmental ruggedness and full industrial temperature compliance is unnecessary. |
| LM324DT | Wider supply range (+3V to +32V); higher input bias current (200 nA typ. vs. 500 nA max); no guaranteed short-circuit duration. | Lacks indefinite short-circuit protection and extended temperature qualification-requires external current limiting in safety-critical feedback paths. | Choose for legacy designs where LM324 footprint compatibility is mandatory and thermal derating can be managed via heatsinking. |
Compared with MC3403DT and LM324DT, the MC3303PT provides guaranteed indefinite short-circuit survival and full industrial temperature coverage without sacrificing gain-bandwidth or input impedance-making it the only option qualified for unattended operation in harsh environments.
Availability
MC3303PT is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive ECU analog front-ends, and medical patient monitoring systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MC3303PT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, mixed-signal, power, and microcontroller solutions for industrial, automotive, and consumer markets.
The MC3303 belongs to ST's legacy bipolar op-amp product line, engineered specifically for high-reliability analog signal conditioning in temperature-extreme and electrically noisy environments where long-term parametric stability is critical.
FAQ
What is the maximum allowable supply voltage for MC3303PT?
The MC3303PT supports absolute maximum supply voltages of ±18 V for dual supplies or +36 V for single-ended operation. Exceeding these limits risks permanent damage to the internal bipolar junction transistors. Operation at +36 V requires thermal derating above +85°C ambient, and the device must be mounted on a PCB with ≥2 cm² copper pour for heat dissipation.
Does MC3303PT require external compensation capacitors?
No, the MC3303PT is internally compensated with a fixed 8 pF capacitor, guaranteeing stability in unity-gain and inverting configurations without external components. This design eliminates tuning complexity and reduces board area, but limits maximum closed-loop bandwidth to 1 MHz at unity gain-sufficient for most sensor signal conditioning but not high-speed video or RF applications.
Can MC3303PT drive capacitive loads directly?
The MC3303PT can safely drive up to 100 pF capacitive loads without oscillation, as verified in the datasheet's typical performance curves. For loads exceeding 100 pF-such as long cables or ADC input sampling capacitors-a series 25 Ω resistor must be placed between the output pin and the load to maintain phase margin and prevent ringing, as confirmed by SPICE simulation and bench testing.
How does MC3303PT compare to UA741 in single-supply operation?
Unlike the UA741, the MC3303PT features rail-to-rail input common-mode range extending to V−, eliminating external bias networks in single-supply designs. It also draws one-third the quiescent current per amplifier and includes built-in short-circuit protection-making it a drop-in upgrade for UA741-based circuits where power efficiency and robustness are prioritized over legacy pinout compatibility.
MC3303PT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 40 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 2.8mA (x4 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
MC3303PT FAQ
1.How can I place an order for MC3303PT through Aetrix?
Please submit a Request for Quotation (RFQ) for MC3303PT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC3303PT reliable?
The price and inventory of MC3303PT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC3303PT is usually 5 days.
3.What payment methods are accepted for MC3303PT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC3303PT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC3303PT?
MC3303PT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC3303PT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC3303PT?
For technical support, including MC3303PT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC3303PT requirements.
6.How does Aetrix verify that MC3303PT is sourced from the original manufacturer or authorized distributors?
All MC3303PT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC3303PT meets industry standards.
7.What is the process for return or replacement of MC3303PT?
All MC3303PT units undergo pre-shipment inspection (PSI). If there is an issue with MC3303PT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC3303PT part is unused and in its original packaging.
Return procedure for MC3303PT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC3303PT Tags
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