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Texas Instruments LM741C-MWC
- Part No.:
- LM741C-MWC
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- Die
- Datasheet:
-
LM741C-MWC.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT WAFERSALE
- Quantity:
- Payment:
- Shipping:
Inventory:4,959
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Product details
Overview
LM741C-MWC from Texas Instruments is a general-purpose operational amplifier in TO-99 metal can package, featuring ±15 V recommended dual supply, 0.5 V/μs slew rate, 70–90 dB common-mode rejection ratio (CMRR), and operation over 0°C to +70°C. It serves as a voltage-controlled analog signal amplifier in feedback configurations for industrial instrumentation, sensor conditioning, and legacy analog subsystems.
For engineers reviewing the LM741C-MWC datasheet, LM741C-MWC pinout, LM741C-MWC application, or LM741C-MWC equivalent, key selection criteria include input offset voltage (2–7.5 mV), supply current (1.7–2.8 mA), output short-circuit current (25 mA), thermal resistance (170°C/W), and compatibility with ±10 V to ±18 V dual supplies.
Technical Context
The LM741C-MWC implements a classic bipolar-input op-amp architecture with internal frequency compensation, enabling stable unity-gain operation without external components. Its input stage uses a differential pair with active load, and the output stage provides class-AB push-pull drive with short-circuit protection.
It operates in open-loop mode as a comparator or in closed-loop configurations (e.g., noninverting, inverting, integrator) where gain and bandwidth are set by external feedback networks. Input common-mode range extends to ±12 V at ±15 V supply, and latch-up is prevented even when inputs exceed rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | ±10 V to ±18 V - supports dual-rail analog systems with headroom for ±12 V input swing and ±10 V output swing into 2 kΩ. |
| Slew Rate | 0.5 V/μs - limits large-signal bandwidth to ~80 kHz at ±10 V output swing; suitable for audio and DC-coupled control loops. |
| Input Offset Voltage | 2–7.5 mV - requires nulling via pins 1/5 for precision DC applications; contributes ≤7.5 mV error at output with unity gain. |
| CMRR | 70–90 dB - rejects up to 3,160× common-mode interference; critical for single-ended sensing in noisy industrial environments. |
| Output Short-Circuit Current | 25 mA - enables direct driving of moderate loads (e.g., 400 Ω at ±10 V) without external buffers. |
| Junction Temperature Limit | 100°C - constrains continuous power dissipation to ≤500 mW with derating above 25°C ambient per RθJA = 170°C/W. |
| Operating Temperature | 0°C to +70°C - qualified for commercial-grade embedded systems, not extended industrial or automotive use. |
Pinout & Package
LM741C-MWC uses an 8-pin TO-99 metal can package (9.08 mm × 9.08 mm body), hermetically sealed for moisture resistance and EMI shielding in high-reliability analog circuits.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5 | Offset Null | Connect external 10-kΩ potentiometer wiper to V– and ends to V+ and V– to trim input offset voltage to <1 mV. |
| 2 | Inverting Input | Differential input node; accepts feedback network connection in inverting amplifier or summing configurations. |
| 3 | Noninverting Input | Differential input node; used for reference biasing, sensor bridge excitation, or high-Z signal routing. |
| 4 | V– | Negative supply rail; must be decoupled with 0.1 µF capacitor placed within 5 mm of pin for stability. |
| 6 | Output | Class-AB push-pull output capable of ±10 V swing into 2 kΩ; includes internal short-circuit protection. |
| 7 | V+ | Positive supply rail; requires symmetric decoupling to V– to minimize PSRR degradation and oscillation risk. |
| 8 | No Connect | Internally unconnected terminal; must remain floating-no tie to ground or supply. |
Key Features
| Feature | Design Value |
|---|---|
| Input Overload Protection | Clamps input current to prevent damage during transient overvoltage events beyond ±30 V differential or ±15 V common-mode. |
| No Latch-Up on CM Range Exceedance | Continues functional operation without reset or power cycle when inputs exceed supply rails-enables robust sensor interface design. |
| Internal Frequency Compensation | Guarantees unity-gain stability without external capacitors; eliminates need for layout-sensitive compensation networks. |
| Output Short-Circuit Protection | Limits output current to 25 mA indefinitely-supports fault-tolerant operation in motor driver preamp or actuator interface stages. |
| Plug-in Replacement Capability | Pin-compatible with LM709C, LM201, MC1439, and LM748-enables drop-in upgrade of legacy analog subsystems without PCB revision. |
Applications
| Industrial Sensor Signal Conditioning | Legacy Test Equipment Amplifier Stage |
|---|---|
|
Use Scenario: Amplifying low-level millivolt outputs from RTDs, thermocouples, or strain gauges in PLC analog input modules. IC Role / Device Role / Timing Role: DC-coupled noninverting amplifier with gain = 100, using 1% resistors and offset nulling for ≤0.1% linearity error. Use Value: Delivers stable gain and rail-to-rail input common-mode range (±12 V) to accommodate sensor bias offsets and noise margins. |
Use Scenario: Output buffer and level-shifter in aging oscilloscope vertical deflection amplifiers requiring ±10 V swing into 1 kΩ. IC Role / Device Role / Timing Role: Unity-gain follower with low output impedance (<75 Ω) and 0.5 V/μs slew rate to preserve 100 kHz waveform fidelity. Use Value: Maintains signal integrity across decades of equipment service life due to TO-99 hermetic sealing and proven reliability. |
| DC Motor Speed Reference Circuit | Analog Summing Node in Control Systems |
|
Use Scenario: Generating precise 0–5 V speed command signals from potentiometer wipers in HVAC blower controllers. IC Role / Device Role / Timing Role: Inverting amplifier with adjustable gain and offset nulling to linearize pot response and reject supply ripple. Use Value: Achieves <0.5% total error over 0–70°C using LM741C-MWC's specified input bias current (≤0.8 μA) and CMRR (≥70 dB). |
Use Scenario: Combining multiple analog feedback signals (e.g., temperature, pressure, flow) into a single composite error signal for PID controllers. IC Role / Device Role / Timing Role: Inverting summing amplifier with matched 10-kΩ input resistors and 10-kΩ feedback resistor for unity-gain summation. Use Value: Provides high input impedance (>10 MΩ) per channel and low output impedance to drive subsequent integrator stages without loading. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM741CN/NOPB | Same electrical specs but in 8-pin PDIP package; higher RθJA (100°C/W vs. 170°C/W); no hermetic seal. | Better suited for cost-sensitive PCB assembly with through-hole reflow; less suitable for high-humidity or EMI-prone enclosures. | Select LM741CN/NOPB only when TO-99 mounting constraints or EMI shielding are unnecessary and board space allows DIP footprint. |
| LM301A-NOPB | Higher slew rate (0.7 V/μs), lower input offset (0.8–4 mV), but no internal compensation-requires external 30 pF capacitor. | Enables wider bandwidth (1.5 MHz) but increases layout sensitivity and design validation effort for stability. | Choose LM301A-NOPB only when >100 kHz small-signal bandwidth is required and compensation network design resources are available. |
Compared with LM741CN/NOPB, LM741C-MWC offers superior thermal performance and EMI immunity in metal-can form, while LM301A-NOPB trades ease-of-use for higher speed-making LM741C-MWC optimal for stable, maintenance-free analog signal paths in commercial-grade equipment.
Availability
LM741C-MWC is available at Aetrix Electronics and suitable for industrial sensor interfaces, legacy test equipment upgrades, and analog control system refurbishment requiring stable component supply and long-term obsolescence mitigation.
Supply support for LM741C-MWC 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 U.S.-based semiconductor company founded in 1930, specializing in analog ICs, embedded processors, and high-reliability components for industrial, automotive, and communications markets.
The LM741 product line was designed in the 1960s as a rugged, plug-in replacement for earlier op-amps like the LM709, targeting general-purpose analog signal processing in instrumentation, control, and educational systems.
FAQ
What is the maximum supply voltage for LM741C-MWC?
The absolute maximum supply voltage for LM741C-MWC is ±18 V. Operation beyond this risks permanent damage. The recommended operating range is ±10 V to ±15 V for optimal performance and longevity. At ±15 V, the device delivers its full specified output swing (±10 V into 2 kΩ) and maintains CMRR ≥70 dB across 0°C to +70°C.
Does LM741C-MWC require external compensation capacitors?
No, LM741C-MWC includes internal frequency compensation and is unity-gain stable without external capacitors. This eliminates layout sensitivity and simplifies design for standard amplifier configurations like inverting, noninverting, and integrator circuits. External compensation is neither required nor recommended unless modifying gain-bandwidth trade-offs in specialized applications.
Can LM741C-MWC operate from a single supply?
Yes, LM741C-MWC can operate from a single supply (e.g., +30 V with ground), but input and output voltage ranges become asymmetric. The input common-mode range extends to within 2 V of each rail, and output swing reaches within 2 V of each rail. For true single-supply operation, biasing the noninverting input to mid-rail (e.g., +15 V) is required to maintain linear operation.
What is the purpose of Pin 8 (NC) on LM741C-MWC?
Pin 8 on LM741C-MWC is a no-connect terminal-internally unconnected and electrically isolated. It must remain floating and should never be tied to ground, supply, or any other node. Leaving it unconnected ensures proper thermal and electrical behavior; connecting it may cause unpredictable performance or increased leakage current.
How does LM741C-MWC differ from LM741A in terms of specifications?
LM741C-MWC is rated for 0°C to +70°C operation with higher input offset voltage (2–7.5 mV vs. 0.8–4 mV for LM741A) and lower CMRR (70–90 dB vs. 80–95 dB). It also has reduced slew rate (0.5 V/μs vs. 0.3–0.7 V/μs typical for LM741A) and lacks the LM741A's tighter input offset drift specification (15 μV/°C). These reflect its commercial-grade qualification versus the LM741A's improved precision.
LM741C-MWC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- 1.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 80 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 1.7mA
- Current - Output / Channel:
- 25 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Wafersale
LM741C-MWC FAQ
1.How can I place an order for LM741C-MWC through Aetrix?
Please submit a Request for Quotation (RFQ) for LM741C-MWC 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 LM741C-MWC reliable?
The price and inventory of LM741C-MWC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM741C-MWC is usually 5 days.
3.What payment methods are accepted for LM741C-MWC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM741C-MWC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM741C-MWC?
LM741C-MWC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM741C-MWC 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 LM741C-MWC?
For technical support, including LM741C-MWC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM741C-MWC requirements.
6.How does Aetrix verify that LM741C-MWC is sourced from the original manufacturer or authorized distributors?
All LM741C-MWC 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 LM741C-MWC meets industry standards.
7.What is the process for return or replacement of LM741C-MWC?
All LM741C-MWC units undergo pre-shipment inspection (PSI). If there is an issue with LM741C-MWC, 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 LM741C-MWC part is unused and in its original packaging.
Return procedure for LM741C-MWC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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