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Texas Instruments MC3303D
- Part No.:
- MC3303D
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC3303D.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,479
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Product details
Overview
MC3303D from STMicroelectronics is a quad bipolar operational amplifier with true differential inputs, rated for industrial temperature range (−40°C to +105°C), ±18V dual or +3V to +36V single supply operation, 500 nA max input bias current, and internal compensation. It delivers low crossover distortion via Class AB output stage and supports precision signal conditioning in sensor interfaces and industrial analog front-ends.
For engineers reviewing the MC3303D datasheet, MC3303D pinout, MC3303D application, or MC3303D equivalent, key selection criteria include its rail-to-rail output swing capability in single-supply mode, −40°C to +105°C operating range, 1 MHz unity-gain bandwidth, 0.35 V/µs slew rate, and 75 Ω output impedance - all critical for stable DC-coupled amplification and active filtering in embedded control systems.
Technical Context
The MC3303 employs a two-stage bipolar architecture with split-collector transconductance reduction enabling 8 pF internal compensation. Its input stage supports common-mode voltage down to the negative rail, eliminating external biasing in single-supply configurations.
Each amplifier features an internally regulated bias network for stable quiescent current across temperature and supply variations, and a Class AB output stage optimized for minimal crossover distortion while maintaining ground-swing capability in +3V to +36V single-supply operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +3V to +36V single or ±15V to ±18V dual - enables direct interfacing with 3.3V, 5V, 12V, and 24V industrial rails |
| Input Bias Current | ≤500 nA max - ensures minimal loading on high-impedance sources like thermocouples or photodiode transimpedance nodes |
| Unity-Gain Bandwidth | 1 MHz - supports stable closed-loop gain ≥1 up to ~100 kHz with adequate phase margin |
| Slew Rate | 0.35 V/µs - limits full-power bandwidth to ~56 kHz at ±10V output swing, suitable for audio and control loop signals |
| Input Offset Voltage | 6 mV max - defines worst-case DC error in precision DC amplification without trimming |
| Output Short-Circuit Protection | Indefinite short to ground per output - allows safe operation in fault-prone industrial I/O stages |
| Common-Mode Input Range | Includes negative supply rail - permits direct sensing of signals referenced to ground in single-supply systems |
Pinout & Package
MC3303D is housed in a 14-pin SOIC (Small Outline Integrated Circuit) plastic micropackage, 8.55–8.75 mm wide, 5.8–6.2 mm deep, with 1.27 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amp 1) | Differential input node for first op-amp; accepts inverted signal path in standard inverting configuration |
| 2 | Non-inverting Input (Amp 1) | Differential input node for first op-amp; used for non-inverting gain or reference biasing |
| 3 | Output (Amp 1) | Class AB buffered output capable of swinging to ground in single supply and ±13 V in ±15 V dual supply |
| 4 | V− (Negative Supply / Ground) | Power return for all four amplifiers; serves as ground reference in single-supply operation |
| 5 | Non-inverting Input (Amp 2) | Input for second amplifier; electrically isolated but shares supply pins with other sections |
| 6 | Inverting Input (Amp 2) | Inverting input for second amplifier; matched to Pin 1 for consistent layout routing |
| 7 | Output (Amp 2) | Independent output stage with same drive strength and protection as Pin 3 |
| 8 | V+ (Positive Supply) | Main positive rail connection for all amplifiers; supports up to +36 V or +18 V in dual-supply mode |
| 9 | Inverting Input (Amp 3) | Third amplifier's inverting input; positioned for symmetrical PCB trace length matching |
| 10 | Non-inverting Input (Amp 3) | Third amplifier's non-inverting input; supports unity-gain buffer or differential pair configuration |
| 11 | Output (Amp 3) | Third independent output; identical electrical specs to Pins 3 and 7 |
| 12 | Inverting Input (Amp 4) | Fourth amplifier's inverting input; completes quad functional set |
| 13 | Non-inverting Input (Amp 4) | Fourth amplifier's non-inverting input; enables multi-channel instrumentation or filter bank use |
| 14 | Output (Amp 4) | Final output channel; fully specified for simultaneous operation with other outputs under thermal limits |
Key Features
| Feature | Design Value |
|---|---|
| Class AB Output Stage | Eliminates crossover distortion in split-supply operation while retaining ground-swing capability in single-supply mode |
| Internally Compensated | Stable unity-gain operation without external compensation components; reduces BOM count and layout sensitivity |
| Short-Circuit Protected Outputs | Each output withstands indefinite short to ground - simplifies fault-tolerant design in motor driver feedback or sensor excitation |
| Wide Supply Range | Operates from +3V to +36V single or ±15V to ±18V dual - supports legacy 24V PLC I/O and modern low-voltage microcontroller interfaces |
| Industrial Temperature Range | Specified from −40°C to +105°C - qualified for deployment in uncontrolled enclosures, factory floors, and outdoor control cabinets |
Applications
| Instrumentation Amplifier Front-End | DC Motor Current Sensing |
|---|---|
Use Scenario: Amplifying low-level bridge sensor outputs (e.g., load cells, pressure transducers) in industrial weighing systems. IC Role / Device Role / Timing Role: First-stage differential amplifier with matched input pairs and rail-to-rail output swing to maximize dynamic range before ADC digitization. Use Value: 500 nA max input bias current prevents significant offset error from high-impedance Wheatstone bridges; 6 mV max Vio enables <0.1% full-scale error without trimming. | Use Scenario: Measuring bidirectional current through H-bridge motor drivers in conveyor or robotic actuation systems. IC Role / Device Role / Timing Role: High-side or low-side current sense amplifier with fast settling and overload tolerance during stall conditions. Use Value: Indefinite short-circuit protection allows safe operation during motor stall or wiring faults; ±18V dual supply supports 24V motor bus monitoring. |
| Active Low-Pass Filter Bank | Reference Voltage Buffer |
Use Scenario: Implementing 4-channel anti-aliasing filters prior to multi-channel SAR ADC sampling in data acquisition modules. IC Role / Device Role / Timing Role: Quad-configured Sallen-Key or multiple-feedback topology amplifier providing precise cutoff frequency and group delay control. Use Value: 1 MHz GBW and 0.35 V/µs slew rate support ≤10 kHz filter design with <0.5 dB passband ripple; matched channel characteristics ensure phase coherence. | Use Scenario: Buffering precision voltage references (e.g., REF5025) to multiple ADCs, DACs, or comparator inputs in mixed-signal control boards. IC Role / Device Role / Timing Role: Unity-gain voltage follower isolating reference source from load-induced drift and noise coupling. Use Value: 75 Ω output impedance and 120 dB channel separation prevent reference droop and crosstalk between sensitive analog subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM324DR | Wider input offset voltage (7 mV max), lower slew rate (0.3 V/µs), no guaranteed −40°C operation | Rated only to 0°C–70°C; less suitable for extended-temperature industrial environments | Select when cost is primary constraint and ambient temperature stays within commercial range |
| TL084CDR | JFET-input (50 pA bias), higher slew rate (13 V/µs), wider GBW (3 MHz), but requires ≥±5V supplies | Not usable below ±5V; unsuitable for 3.3V or single-supply 5V systems without level-shifting | Select for high-speed AC-coupled signal paths where low input current and bandwidth outweigh supply flexibility |
Compared with LM324DR and TL084CDR, the MC3303D uniquely balances wide supply range (+3V to +36V), industrial temperature rating, and robust short-circuit protection - making it optimal for unattended industrial analog signal chains where reliability and supply versatility are non-negotiable.
Availability
MC3303D is available at Aetrix Electronics and suitable for industrial automation, motor control feedback loops, and sensor signal conditioning requiring stable component supply across extended temperature and voltage ranges.
Supply support for MC3303D 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, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.
The MC3303 belongs to ST's legacy bipolar op-amp product line, engineered specifically for ruggedized industrial signal conditioning where wide supply range, thermal stability, and fault resilience are prioritized over ultra-low power or GHz bandwidth.
FAQ
What is the maximum junction temperature for MC3303D under continuous operation?
The MC3303D has a maximum junction temperature of +150°C. With its 500 mW total power dissipation rating and SOIC package thermal resistance (θJA ≈ 125°C/W), sustained operation at full 4-amplifier load requires board-level thermal management - such as copper pour under the exposed pad (if present) or forced airflow - especially above +85°C ambient.
Can MC3303D operate with a single +5V supply and still achieve rail-to-rail output swing?
No - the MC3303D does not provide rail-to-rail output. With +5V single supply and V− = 0V, typical output swing is +1.7V to +3.3V (i.e., ~1.7 V from each rail). This limitation arises from its bipolar Class AB output stage; it cannot reach within ~1.7 V of either supply rail, unlike CMOS rail-to-rail op-amps.
Is the MC3303D pin-compatible with the MC3403N DIP-14 version?
Yes - the MC3303D (SOIC-14) and MC3403N (DIP-14) share identical pinout and electrical specifications except for temperature grade and package. Both follow the standard quad op-amp pin mapping: Pins 1–3 (Amp 1), 4 (V−), 5–7 (Amp 2), 8 (V+), 9–11 (Amp 3), 12–14 (Amp 4). Layout adaptation is required only for footprint and thermal relief.
Does MC3303D require external compensation capacitors for unity-gain stability?
No - the MC3303D is internally compensated and stable at unity gain without external components. Its 8 pF on-die compensation capacitor ensures ≥60° phase margin across all supply voltages and loads up to 100 pF, as verified in the datasheet's typical performance curves and stability test conditions.
MC3303D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 0.6V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 200 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 2.8mA (x4 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MC3303D FAQ
1.How can I place an order for MC3303D through Aetrix?
Please submit a Request for Quotation (RFQ) for MC3303D 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 MC3303D reliable?
The price and inventory of MC3303D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC3303D is usually 5 days.
3.What payment methods are accepted for MC3303D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC3303D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC3303D?
MC3303D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC3303D 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 MC3303D?
For technical support, including MC3303D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC3303D requirements.
6.How does Aetrix verify that MC3303D is sourced from the original manufacturer or authorized distributors?
All MC3303D 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 MC3303D meets industry standards.
7.What is the process for return or replacement of MC3303D?
All MC3303D units undergo pre-shipment inspection (PSI). If there is an issue with MC3303D, 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 MC3303D part is unused and in its original packaging.
Return procedure for MC3303D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC3303D Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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