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STMicroelectronics MC3403DT
- Part No.:
- MC3403DT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC3403DT.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:5,584
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Product details
Overview
MC3403DT from STMicroelectronics is a quad bipolar operational amplifier with true differential inputs, Class AB output stage, short-circuit protected outputs, and operation from +3V to +36V single supply or ±15V to ±18V dual supplies. It delivers 1 MHz unity-gain bandwidth, 0.35 V/µs slew rate, and input bias current ≤500 nA, enabling precision signal conditioning in industrial sensor interfaces and analog front-ends.
For engineers reviewing the MC3403DT datasheet, MC3403DT pinout, MC3403DT application, or MC3403DT equivalent, key selection criteria include input common-mode range extending to negative rail, low quiescent current (≈1.75 mA per amplifier), rail-to-rail output swing capability in single-supply mode, and internal compensation for stable unity-gain operation.
Technical Context
The MC3403DT integrates four independent, internally compensated two-stage op-amps using bipolar junction transistor (BJT) technology. Each amplifier features a differential input stage with transconductance reduction enabling use of only an 8 pF compensation capacitor, and a Class AB output stage that eliminates crossover distortion while supporting ground-swing output in single-supply configurations.
Its input common-mode voltage range includes the negative supply rail (down to VCC−), eliminating external biasing in many single-supply applications. The device uses an internal voltage-regulated bias network to ensure stable temperature performance and high PSRR (77 dB typical).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +3V to +36V single supply or ±15V to ±18V dual supply - supports wide-input industrial power rails without external regulators. |
| Unity-Gain Bandwidth | 1 MHz - enables stable amplification of audio and control-loop signals up to ~100 kHz with minimal phase shift. |
| Slew Rate | 0.35 V/µs - sufficient for <10 Vpp signals at ≤35 kHz without distortion in closed-loop configurations. |
| Input Bias Current | ≤500 nA max - minimizes DC error in high-impedance sensor interfaces (e.g., thermistor, photodiode networks). |
| Input Offset Voltage | ≤6 mV max - ensures ≤60 mV output error at gain = 10, suitable for medium-precision instrumentation. |
| Common-Mode Rejection | ≥70 dB - rejects noise coupled equally to both inputs, critical in noisy industrial environments. |
| Output Short-Circuit Duration | Infinite - allows continuous fault protection without thermal shutdown, simplifying system-level safety design. |
Pinout & Package
MC3403DT is supplied in a 14-pin Small Outline (SO-14) plastic micropackage, RoHS-compliant, tape-and-reel format optimized for automated SMT assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 12 | Inverting Input (−) | Differential input node for each of four amplifiers; accepts signals referenced to ground or negative rail. |
| 2, 6, 10, 13 | Non-inverting Input (+) | Differential input node; common-mode range extends to VCC−, enabling direct connection to grounded sensors. |
| 3, 7, 11, 14 | Output | Class AB buffered output capable of swinging within ~1.7 V of VCC+ and to VCC− (ground) in single supply. |
| 4 | VCC− | Negative supply or ground reference; all four amplifiers share this terminal. |
| 8 | VCC+ | Positive supply rail; powers all four amplifiers simultaneously. |
Key Features
| Feature | Design Value |
|---|---|
| Short-circuit protected outputs | Each output can be continuously shorted to ground without damage or latch-up, reducing need for external current-limiting circuitry. |
| Class AB output stage | Eliminates crossover distortion across full output swing, ensuring clean waveform fidelity in audio and active filter applications. |
| Single-supply operation down to +3V | Enables direct interfacing with 3.3V microcontrollers and low-voltage sensors without level-shifting circuitry. |
| Internally compensated | Stable unity-gain operation without external compensation components, reducing BOM count and PCB area. |
| Low input bias current (≤500 nA) | Preserves signal integrity in high-impedance transducer circuits (e.g., pH electrodes, piezoelectric sensors). |
Applications
| Industrial Sensor Signal Conditioning | Wien Bridge Oscillator |
|---|---|
|
Use Scenario: Amplifying low-level outputs from RTDs, strain gauges, or thermocouples in PLC analog input modules. IC Role / Device Role / Timing Role: Quad op-amp configured as instrumentation amplifier front-end and buffer stages. Use Value: Input common-mode range to ground eliminates external bias resistors; low Iib prevents loading of high-Z sensor elements. |
Use Scenario: Generating stable 1 kHz sine wave reference for calibration equipment using feedback-controlled RC network. IC Role / Device Role / Timing Role: One amplifier as gain-stabilized Wien bridge amplifier; others as buffers and comparators. Use Value: Internal compensation ensures oscillation stability; rail-to-ground output enables direct interface with ADC reference inputs. |
| Comparator with Hysteresis | Bi-Quad Active Filter |
|
Use Scenario: Converting slow-moving analog process signals (e.g., pressure, flow) into clean digital logic levels for microcontroller input. IC Role / Device Role / Timing Role: Single amplifier used as comparator with positive feedback resistor network for hysteresis. Use Value: Low input offset voltage (<6 mV) ensures precise threshold setting; short-circuit protection prevents latch-up during transient overdrive. |
Use Scenario: Implementing bandpass/notch filtering in audio test equipment or vibration analysis systems. IC Role / Device Role / Timing Role: All four amplifiers used in standard bi-quad topology for simultaneous passband and notch response. Use Value: Channel separation >120 dB prevents crosstalk between filter sections; 1 MHz GBW supports center frequencies up to ~100 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM324DT | Higher input offset voltage (7 mV max), lower PSRR (65 dB), no short-circuit protection on all outputs. | Less suitable for precision single-supply sensor buffering where rail-to-rail input and fault tolerance are required. | Preferred where cost is primary constraint and moderate accuracy suffices; not recommended for safety-critical fault-tolerant designs. |
| TL084CDT | JFET input (50 pA Iib), higher slew rate (13 V/µs), but requires ≥±5V dual supply and lacks ground-swing output. | Better for high-speed, high-Z source amplification (e.g., photodiode transimpedance), unsuitable for 3.3V single-supply systems. | Select when ultra-low input bias and speed outweigh single-supply compatibility; avoid if VCC+ < ±5V or ground-referenced output needed. |
Compared with LM324DT and TL084CDT, the MC3403DT uniquely combines single-supply operation down to +3V, short-circuit protected outputs, and rail-to-ground output swing - making it optimal for cost-sensitive, robust industrial analog signal chains where reliability and supply flexibility are essential.
Availability
MC3403DT is available at Aetrix Electronics and suitable for industrial sensor interfaces, programmable logic controller (PLC) analog input modules, and embedded test equipment requiring stable component supply across extended temperature ranges (0°C to +70°C).
Supply support for MC3403DT 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, specializing in automotive, industrial, and power management ICs with strong analog and mixed-signal design heritage.
The MC3403DT belongs to ST's legacy bipolar op-amp product line, engineered for robustness, ease of use, and compatibility with classic 741-based designs while improving power efficiency and single-supply functionality.
FAQ
What is the maximum operating temperature for MC3403DT?
The MC3403DT is rated for operation from 0°C to +70°C ambient temperature. This commercial-grade temperature range aligns with its intended use in non-automotive industrial control and instrumentation applications. Junction temperature must remain below 150°C under normal load conditions, and thermal derating is required above 70°C ambient.
Can MC3403DT drive a 2 kΩ load at ±10 V output swing?
No - the MC3403DT's specified ±Vopp is ±10 V only with RL ≥ 2 kΩ under ±15 V supplies. At ±10 V output, the device delivers ≤30 mA per output (Ios = 10–45 mA), so a 2 kΩ load draws 5 mA, well within safe limits. However, output voltage swing degrades to ±10 V only under those exact conditions; actual swing may reduce under heavier loads or lower supply voltages.
Is MC3403DT pin-compatible with LM324?
Yes - MC3403DT uses the same SO-14 pinout as LM324, including identical assignment of VCC+ (pin 4), VCC− (pin 11), and amplifier input/output terminals. This allows drop-in replacement in most LM324-based layouts, though designers must verify that the MC3403DT's higher PSRR, lower Iib, and short-circuit protection meet system requirements.
Does MC3403DT require external compensation capacitors?
No - the MC3403DT is internally compensated for stable unity-gain operation. Its 8 pF on-chip compensation capacitor eliminates the need for external frequency compensation components, simplifying layout and reducing bill-of-materials cost. External compensation is neither required nor recommended unless specific high-frequency stability analysis dictates otherwise.
MC3403DT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
MC3403DT FAQ
1.How can I place an order for MC3403DT through Aetrix?
Please submit a Request for Quotation (RFQ) for MC3403DT 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 MC3403DT reliable?
The price and inventory of MC3403DT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC3403DT is usually 5 days.
3.What payment methods are accepted for MC3403DT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC3403DT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC3403DT?
MC3403DT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC3403DT 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 MC3403DT?
For technical support, including MC3403DT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC3403DT requirements.
6.How does Aetrix verify that MC3403DT is sourced from the original manufacturer or authorized distributors?
All MC3403DT 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 MC3403DT meets industry standards.
7.What is the process for return or replacement of MC3403DT?
All MC3403DT units undergo pre-shipment inspection (PSI). If there is an issue with MC3403DT, 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 MC3403DT part is unused and in its original packaging.
Return procedure for MC3403DT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC3403DT Tags
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