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Texas Instruments MC3403DBR
- Part No.:
- MC3403DBR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC3403DBR.pdf
- Description:
- OPERATIONAL AMPLIFIER, 4 FUNC, 1
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
MC3403DBR from Texas Instruments is a quadruple low-power operational amplifier optimized for single-supply operation from 3 V to 36 V or dual supplies up to ±15 V, featuring true differential inputs, Class AB output stage, internal frequency compensation, and input offset voltage ≤10 mV at 25°C. It delivers rail-to-rail input common-mode range (down to VCC–) and output swing to VCC–1.5 V, supporting precision signal conditioning in industrial sensor interfaces and analog front-ends.
For engineers reviewing the MC3403DBR datasheet, MC3403DBR pinout, MC3403DBR application, or MC3403DBR equivalent, this page provides verified electrical specifications, thermal performance data (θJA = 96°C/W), operating temperature range (0°C to 70°C), and validated alternative options for legacy design continuity and supply chain resilience.
Technical Context
The MC3403DBR implements four independent op-amps with matched large-signal differential voltage amplification (AVD ≥20 V/mV), unity-gain bandwidth of 1 MHz, and slew rate of 0.6 V/µs under ±15 V supply. Its Class AB output stage enables stable drive into 2 kΩ loads while maintaining <1% crossover distortion at 10 kHz.
Designed for single-supply systems, it supports common-mode input down to the negative rail and delivers peak output swing of ±10 V (RL = 2 kΩ) or 3.3 V (VCC+ = 5 V). Input bias current is –0.2 µA typical at 25°C, and short-circuit output current reaches ±45 mA - enabling robust interfacing with transducers and actuator drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | Single: 3 V to 36 V; Dual: ±2.5 V to ±15 V - supports wide-input industrial power rails and battery-powered systems. |
| Input Offset Voltage | ≤10 mV at 25°C - ensures minimal DC error in precision gain stages and sensor amplifiers. |
| Unity-Gain Bandwidth | 1 MHz - sufficient for audio preamplification, active filters, and medium-speed control loops. |
| Slew Rate | 0.6 V/µs - limits high-frequency distortion in pulse amplification and waveform shaping circuits. |
| Common-Mode Input Range | VCC– to (VCC+ − 2 V) - enables direct sensing of signals referenced to ground in single-supply configurations. |
| Output Voltage Swing | ≥±10 V (RL = 2 kΩ, ±15 V supply); VCC– to (VCC+ − 1.5 V) - provides usable dynamic range without rail-to-rail output circuitry. |
| Quiescent Supply Current | 2.8 mA typical per package - reduces power consumption in multi-channel portable instrumentation. |
Pinout & Package
MC3403DBR is housed in a 14-pin plastic shrink small-outline (SOIC) package (DB), measuring 8.65 mm × 3.91 mm × 1.75 mm, with gull-wing leads and RoHS-compliant CU NIPDAU finish. Thermal resistance θJA is 96°C/W, suitable for moderate-power analog applications without forced airflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OUT | Output of amplifier A - drives external load or feedback network; capable of ±45 mA short-circuit current. |
| 2 | 1IN– | Inverting input of amplifier A - accepts feedback or reference signal; biased at VCC– to (VCC+ − 2 V). |
| 3 | 1IN+ | Non-inverting input of amplifier A - connects to sensor or signal source; common-mode range includes VCC–. |
| 4 | VCC– | Negative supply rail - serves as ground reference in single-supply mode or negative rail in dual-supply mode. |
| 5 | 2IN+ | Non-inverting input of amplifier B - electrically isolated but thermally coupled to other amplifiers on die. |
| 6 | 2IN– | Inverting input of amplifier B - shares same input bias current spec (–0.2 µA typ) as pin 2. |
| 7 | 2OUT | Output of amplifier B - identical AC/DC performance to pin 1; crosstalk attenuation >120 dB at 1–20 kHz. |
| 8 | 3OUT | Output of amplifier C - internally identical to pins 1 and 7; supports independent gain stages in multi-channel systems. |
| 9 | 3IN– | Inverting input of amplifier C - matches pin 2 electrical characteristics; used in summing or differential configurations. |
| 10 | 3IN+ | Non-inverting input of amplifier C - supports rail-to-rail input operation when VCC– = 0 V. |
| 11 | VCC+ | Positive supply rail - accepts up to +36 V in single-supply mode; must be ≥3 V above VCC–. |
| 12 | 4IN+ | Non-inverting input of amplifier D - enables four-channel simultaneous signal processing in compact layouts. |
| 13 | 4IN– | Inverting input of amplifier D - exhibits same input offset current drift (50 pA/°C) as other inputs. |
| 14 | 4OUT | Output of amplifier D - fully specified for output swing, slew rate, and load driving capability like pins 1/7/8. |
Key Features
| Feature | Design Value |
|---|---|
| Internal frequency compensation | Ensures stable unity-gain operation without external components - simplifies PCB layout and reduces BOM count. |
| True differential input stage | Delivers 70 dB common-mode rejection ratio (CMRR) - suppresses noise in unbalanced sensor bridges and noisy environments. |
| Class AB output stage | Enables low-distortion linear operation with <1% crossover distortion at 10 kHz - critical for audio and precision waveform generation. |
| Short-circuit protection | Withstands indefinite output shorts to VCC+ or VCC– - improves system reliability during fault conditions or prototyping errors. |
| Low input bias current | –0.2 µA typical at 25°C - minimizes voltage drop across high-impedance sources (e.g., pH electrodes, photodiodes). |
Applications
| Industrial Sensor Signal Conditioning | Automotive Cabin Temperature Monitoring |
|---|---|
|
Use Scenario: Amplifying low-level mV outputs from RTDs and thermocouples in programmable logic controllers. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with offset trimming capability and rail-referenced input. Use Value: Input offset voltage ≤10 mV and CMRR ≥70 dB reduce calibration burden and improve long-term measurement stability. |
Use Scenario: Linearizing and scaling NTC thermistor outputs for HVAC control units in passenger vehicles. IC Role / Device Role / Timing Role: Four-channel analog front-end providing simultaneous signal paths for multiple cabin zones. Use Value: 0°C to 70°C operating range and ±15 V dual-supply compatibility match automotive interior electronics requirements. |
| Legacy Audio Preamp Modules | Medical Patient Monitor Analog Backplane |
|
Use Scenario: Replacing obsolete µA741-based microphone preamplifiers in studio mixing consoles. IC Role / Device Role / Timing Role: Low-noise, low-distortion voltage amplifier with 1 MHz bandwidth and 0.6 V/µs slew rate. Use Value: Quiescent current <7 mA per package extends runtime in battery-powered field recorders. |
Use Scenario: Isolating and buffering ECG/EEG electrode signals before ADC sampling in bedside monitors. IC Role / Device Role / Timing Role: High-input-impedance buffer stage with input bias current ≤–0.5 µA over full temperature range. Use Value: True differential input and rail-to-rail common-mode range enable direct connection to dry-electrode sensors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quadruple low-power op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC3403DR | Same silicon die, SOIC-14 (D) package with θJA = 86°C/W - 10°C/W lower thermal resistance than DB variant. | Preferred where board space allows standard SOIC footprint and higher power dissipation margin is required. | Select MC3403DR when thermal headroom exceeds 10°C/W and tape-and-reel volume (2500 pcs) aligns with production needs. |
| LM324N | Higher input offset voltage (±7 mV typ), lower CMRR (65 dB), no guaranteed 0°C to 70°C operation - broader parametric spread. | Used in cost-sensitive consumer electronics where precision is secondary to unit cost and availability. | Choose LM324N only if design tolerates wider offset drift and reduced common-mode immunity; not recommended for calibrated instrumentation. |
Compared with MC3403DBR, MC3403DR offers better thermal performance in the same functional family, while LM324N trades specification tightness for broader market availability and lower procurement risk - making MC3403DBR optimal for legacy industrial upgrades requiring documented parameter continuity.
Availability
MC3403DBR is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive cabin electronics, legacy audio equipment repair, medical analog backplanes, and programmable logic controller signal conditioning requiring stable component supply and long-lifecycle support.
Supply support for MC3403DBR 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
Texas Instruments is a global semiconductor leader founded in 1930, specializing in analog ICs, embedded processors, and digital signal solutions for industrial, automotive, and communications markets.
The MC3403DBR belongs to TI's legacy analog amplifier portfolio, designed specifically for cost-effective, reliable replacement of µA741-family op-amps in single- and dual-supply applications demanding low quiescent current and robust input/output voltage ranges.
FAQ
What is the maximum supply voltage rating for MC3403DBR?
The MC3403DBR has an absolute maximum supply voltage rating of ±18 V (VCC+ ≤ +18 V, VCC– ≥ –18 V), with a maximum differential supply voltage of 36 V. Operation beyond these limits risks permanent damage. Recommended operating range is 5 V to 30 V single supply or ±2.5 V to ±15 V dual supply - ensuring reliable function within datasheet-specified parameters for MC3403DBR.
Does MC3403DBR support rail-to-rail input or output operation?
The MC3403DBR supports rail-to-rail input common-mode range (down to VCC–), but its output swing is limited to VCC– to (VCC+ − 1.5 V) under load. It does not provide true rail-to-rail output. This behavior is confirmed in the "Peak output voltage swing" specification: ±10 V with ±15 V supplies and 2 kΩ load. Therefore, MC3403DBR is not a rail-to-rail output device, though its input stage accommodates signals at the negative rail - a key advantage over older µA741 derivatives.
What is the thermal resistance (θJA) of the MC3403DBR package?
The MC3403DBR uses a plastic shrink small-outline (DB) package with a measured junction-to-ambient thermal resistance (θJA) of 96°C/W, as specified in the Absolute Maximum Ratings table. This value assumes standard JEDEC test conditions (JESD 51-7) and is critical for calculating junction temperature rise under load. For example, at 7 mA total supply current and 15 V supply, power dissipation is ~105 mW, resulting in ~10°C junction-to-ambient rise - well within safe operating limits for MC3403DBR.
Is MC3403DBR interchangeable with MC3303 series devices?
The MC3403DBR is explicitly designed to be interchangeable with the MC3303 series in pinout and basic functionality, but differs in temperature grade: MC3403DBR is rated for 0°C to 70°C, whereas MC3303 variants operate from –40°C to 85°C. Electrical parameters such as input offset voltage (10 mV max vs. 8 mV max) and input bias current drift also differ slightly. Thus, MC3403DBR can replace MC3303 in commercial-temperature applications, but not in extended-temperature industrial or automotive under-hood use cases - confirming its role as a temperature-binned variant within the same functional family.
What packaging and reel options are available for MC3403DBR?
The MC3403DBR is supplied exclusively in tape-and-reel format per TI's packaging documentation: 2000 units per reel, with reel diameter 330.0 mm, width 16.4 mm, and pin one quadrant Q1. The DB package is not offered in tube or tray formats. This configuration supports automated SMT placement and aligns with industry-standard feeder compatibility - essential for high-volume manufacturing of MC3403DBR-based designs.
MC3403DBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MC3403DBR FAQ
1.How can I place an order for MC3403DBR through Aetrix?
Please submit a Request for Quotation (RFQ) for MC3403DBR 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 MC3403DBR reliable?
The price and inventory of MC3403DBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC3403DBR is usually 5 days.
3.What payment methods are accepted for MC3403DBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC3403DBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC3403DBR?
MC3403DBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC3403DBR 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 MC3403DBR?
For technical support, including MC3403DBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC3403DBR requirements.
6.How does Aetrix verify that MC3403DBR is sourced from the original manufacturer or authorized distributors?
All MC3403DBR 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 MC3403DBR meets industry standards.
7.What is the process for return or replacement of MC3403DBR?
All MC3403DBR units undergo pre-shipment inspection (PSI). If there is an issue with MC3403DBR, 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 MC3403DBR part is unused and in its original packaging.
Return procedure for MC3403DBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC3403DBR Tags
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