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STMicroelectronics MC3403PT
- Part No.:
- MC3403PT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MC3403PT.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,137
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Product details
Overview
MC3403PT from STMicroelectronics is a quad bipolar operational amplifier with true differential inputs, designed for general-purpose analog signal conditioning in single- or dual-supply systems. It operates from +3V to +36V (single) or ±15V to ±18V (dual), features 500 nA max input bias current, internal compensation, and class AB output stage enabling rail-to-rail output swing near ground in single-supply configurations - used in sensor front-ends, active filters, and voltage reference circuits.
For engineers reviewing the MC3403PT datasheet, MC3403PT pinout, MC3403PT application, or MC3403PT equivalent, key selection considerations include its 1 MHz unity-gain bandwidth, 0.35 V/µs slew rate, ±13 V output swing into 10 kΩ, 77 dB supply voltage rejection, and TSSOP-14 package compatibility with space-constrained industrial control and instrumentation designs.
Technical Context
The MC3403PT integrates four independent, internally compensated two-stage op-amps using bipolar junction transistor (BJT) technology. Its input stage employs split-collector transconductance reduction with an 8 pF compensation capacitor, enabling stable unity-gain operation while minimizing die area.
The class AB output stage eliminates crossover distortion in dual-supply mode and supports output swing to ground in single-supply mode. Input common-mode range extends to the negative rail, removing need for external biasing networks in many DC-coupled applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +3V to +36V (single); ±15V to ±18V (dual) - supports wide-range industrial power rails and battery-powered systems |
| Unity-Gain Bandwidth | 1 MHz - enables stable amplification of audio-band and low-speed control signals |
| Slew Rate | 0.35 V/µs - limits large-signal transient response but sufficient for <10 kHz closed-loop applications |
| Input Bias Current | 500 nA max - allows high-impedance sensor interfacing without significant offset error |
| Input Offset Voltage | 6 mV max - defines DC accuracy in precision gain stages and comparator thresholds |
| Output Short-Circuit Protection | Indefinite short to ground per amplifier - enhances reliability in fault-prone signal paths |
| Common-Mode Input Range | Includes negative supply rail - enables direct DC coupling to ground-referenced sources |
Pinout & Package
MC3403PT is housed in a 14-pin Thin Shrink Small Outline Package (TSSOP-14), optimized for surface-mount assembly and high-density PCB layouts. Pin numbering follows standard top-view DIP/SO/TSSOP convention with Pin 1 marked by a dot or beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amp 1) | Differential input node for first op-amp; accepts inverted signal path in standard configurations |
| 2 | Non-inverting Input (Amp 1) | Differential input node for first op-amp; accepts non-inverted signal path or reference voltage |
| 3 | Output (Amp 1) | Class AB buffered output capable of sourcing/sinking up to 30 mA and swinging to within ~1.7 V of VCC+ |
| 4 | V− (Negative Supply / Ground) | Common return for all four amplifiers; serves as ground reference in single-supply operation |
| 5 | Inverting Input (Amp 2) | Differential input node for second op-amp; electrically isolated from other channels |
| 6 | Non-inverting Input (Amp 2) | Differential input node for second op-amp; shares same V− reference as all channels |
| 7 | Output (Amp 2) | Independent output stage with identical drive capability and voltage swing as Amp 1 |
| 8 | Output (Amp 3) | Third independent output; supports multi-channel signal processing without external multiplexing |
| 9 | Non-inverting Input (Amp 3) | Input for third amplifier; layout symmetry ensures matched thermal and parasitic behavior across channels |
| 10 | Inverting Input (Amp 3) | Inverting input for third amplifier; pin order matches industry-standard quad op-amp footprint |
| 11 | Inverting Input (Amp 4) | Fourth amplifier's inverting input; completes full quad configuration in compact TSSOP footprint |
| 12 | Non-inverting Input (Amp 4) | Fourth amplifier's non-inverting input; enables simultaneous 4-channel instrumentation or filtering |
| 13 | Output (Amp 4) | Final independent output; allows full utilization of all four amplifiers in one IC |
| 14 | V+ (Positive Supply) | Common positive supply rail for all four amplifiers; decoupling recommended at package edge |
Key Features
| Feature | Design Value |
|---|---|
| Internally Compensated | Stable unity-gain operation without external compensation components - reduces BOM count and layout complexity |
| Short-Circuit Protected Outputs | Each amplifier withstands indefinite output-to-ground shorts - improves system robustness in motor driver feedback or sensor interface faults |
| Class AB Output Stage | Eliminates crossover distortion in ±15 V operation while enabling ground-swing capability in +5 V systems - supports both legacy and modern supply architectures |
| Low Input Bias Current | 500 nA maximum - preserves signal integrity when driving high-value feedback networks (e.g., >1 MΩ) in precision integrators or photodiode amps |
| Wide Supply Range | +3 V to +36 V single supply - accommodates 3.3 V microcontroller interfaces, 12 V industrial sensors, and 24 V PLC I/O modules in one part |
Applications
| Active Low-Pass Filter | Voltage Reference Buffer |
|---|---|
Use Scenario: Filtering noisy analog sensor outputs (e.g., thermocouple or strain gauge) before ADC sampling in embedded data loggers. IC Role / Device Role / Timing Role: Quad op-amp configured as cascaded Sallen-Key stages - each amplifier implements one pole with precise gain and phase control. Use Value: Achieves >40 dB attenuation at 10× cutoff frequency using only passive RC and internal compensation - no external capacitors needed for stability. | Use Scenario: Stabilizing and buffering a precision bandgap reference (e.g., LM4040) for multiple ADCs or DACs in a mixed-signal PCB. IC Role / Device Role / Timing Role: Unity-gain buffer isolating reference from load variations - prevents reference drift due to dynamic current draw. Use Value: Maintains reference accuracy within ±0.5 mV over 0–70°C using <500 nA input bias current and 77 dB PSRR - avoids calibration drift in metrology-grade systems. |
| Wien Bridge Oscillator | Comparator with Hysteresis |
Use Scenario: Generating stable 1 kHz sine wave for audio test equipment or sensor excitation in impedance analyzers. IC Role / Device Role / Timing Role: One amplifier as gain stage, another as amplitude-stabilizing diode network controller - remaining two unused or paralleled for noise reduction. Use Value: Delivers THD <0.02% at 1 kHz using internal 1 MHz GBW and low-noise BJT input stage - meets Class II audio test requirements. | Use Scenario: Converting slow-varying analog signals (e.g., temperature or light level) into clean digital logic levels for microcontroller GPIO input. IC Role / Device Role / Timing Role: Single amplifier configured as Schmitt trigger with resistor feedback network defining upper/lower thresholds. Use Value: Provides 120 dB channel separation and 10 µV/°C offset drift - ensures reliable switching despite ambient temperature shifts in HVAC controllers. |
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 slew rate (0.4 V/µs), wider temp range (−40°C to +105°C) | Better suited for automotive under-hood environments; less suitable for low-distortion oscillator designs | Select when extended temperature range and cost sensitivity outweigh need for low THD or fast settling |
| TL084CDT | JFET input (50 pA bias), higher slew rate (13 V/µs), higher GBW (3 MHz), no short-circuit protection | Enables high-frequency active filters but requires external current limiting in fault conditions | Select when ultra-low input bias and wide bandwidth are critical, and fault protection is handled externally |
Compared with LM324DT and TL084CDT, MC3403PT offers balanced performance: superior short-circuit resilience versus TL084CDT and lower THD versus LM324DT - making it optimal for industrial instrumentation where reliability and signal fidelity coexist.
Availability
MC3403PT is available at Aetrix Electronics and suitable for industrial control panels, sensor signal conditioning modules, and analog test equipment requiring stable component supply and long-term manufacturability.
Supply support for MC3403PT 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 analog, power, microcontrollers, and MEMS technologies for industrial, automotive, and consumer markets.
The MC3403 series belongs to ST's legacy bipolar op-amp product line, engineered for cost-sensitive, high-reliability analog signal conditioning in industrial automation and measurement equipment.
FAQ
What is the maximum operating junction temperature for MC3403PT?
The MC3403PT has a specified operating free-air temperature range of 0°C to +70°C. Its absolute maximum junction temperature is 150°C, but sustained operation above +70°C ambient requires derating based on package thermal resistance (θJA ≈ 160°C/W for TSSOP-14) and PCB copper area - typical design practice limits junction temperature to ≤125°C for long-term reliability.
Can MC3403PT drive a 600 Ω audio line directly?
No - MC3403PT is not optimized for low-impedance audio loads. Its output impedance is 75 Ω and short-circuit current is limited to 30 mA. Driving 600 Ω at ±10 V would require ≥33 mA, risking thermal overload and distortion. Use an external buffer stage (e.g., discrete emitter follower or dedicated line driver) for professional audio interfacing.
Does MC3403PT support rail-to-rail input or output?
MC3403PT supports rail-to-rail input common-mode range (down to V−), but output swing is limited: typically ±13 V into 10 kΩ with ±15 V supplies, or VCC−1.7 V and ground in single supply. It does not achieve true rail-to-rail output - headroom of ~1.7 V at VCC and ~1 V at V− is required for linear operation.
Is there a drop-in replacement for MC3403PT in SO-14 package?
Yes - MC3403D is the SO-14 variant, sharing identical electrical specifications and pinout. Both use the same die and differ only in packaging: MC3403PT is TSSOP-14 (tape-and-reel, thinner profile), while MC3403D is SO-14 (standard gull-wing leads). Footprint conversion requires PCB redesign but no schematic changes.
MC3403PT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-TSSOP
MC3403PT FAQ
1.How can I place an order for MC3403PT through Aetrix?
Please submit a Request for Quotation (RFQ) for MC3403PT 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 MC3403PT reliable?
The price and inventory of MC3403PT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC3403PT is usually 5 days.
3.What payment methods are accepted for MC3403PT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC3403PT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC3403PT?
MC3403PT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC3403PT 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 MC3403PT?
For technical support, including MC3403PT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC3403PT requirements.
6.How does Aetrix verify that MC3403PT is sourced from the original manufacturer or authorized distributors?
All MC3403PT 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 MC3403PT meets industry standards.
7.What is the process for return or replacement of MC3403PT?
All MC3403PT units undergo pre-shipment inspection (PSI). If there is an issue with MC3403PT, 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 MC3403PT part is unused and in its original packaging.
Return procedure for MC3403PT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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