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Texas Instruments LM741CH/NOPB
- Part No.:
- LM741CH/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- TO-99-8 Metal Can
- Datasheet:
-
LM741CH/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT TO99-8
- Quantity:
- Payment:
- Shipping:
Inventory:4,888
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Product details
Overview
LM741CH/NOPB from Texas Instruments is a general-purpose operational amplifier in TO-99 metal can package, featuring ±22 V absolute maximum supply voltage, 0.5 V/μs slew rate, 80–95 dB common-mode rejection ratio, and guaranteed operation from 0°C to +70°C. It serves as a direct plug-in replacement for legacy op-amps including LM709C and LM201 in analog signal conditioning, comparator, and active filter circuits.
For engineers reviewing the LM741CH/NOPB datasheet, LM741CH/NOPB pinout, LM741CH/NOPB application, or LM741CH/NOPB equivalent, key selection considerations include its input offset voltage (2–7.5 mV), dual-supply compatibility (±10 V to ±18 V recommended), thermal resistance (170°C/W junction-to-ambient), and absence of latch-up under common-mode overvoltage conditions.
Technical Context
The LM741CH/NOPB implements a classic bipolar-input, internally compensated op-amp architecture with differential pair input stage, high-gain intermediate stage, and Class-A output stage. Its open-loop gain exceeds 25 V/mV at ±15 V supply, and it supports both single- and dual-supply operation with rail-to-rail input voltage range up to ±13 V.
Functional modes include open-loop comparator operation and closed-loop configurations (e.g., noninverting amplifier with gain = 1 + R₂/R₁). Internal overload protection safeguards input and output terminals against transient overvoltage and short-circuit stress without requiring external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±10 V to ±18 V (recommended); enables use in legacy industrial control systems with standard ±15 V rails |
| Input Offset Voltage | 2–7.5 mV (max at temp range); determines DC error in precision integrators and summing amplifiers |
| Slew Rate | 0.5 V/μs (typ); limits full-power bandwidth to ~80 kHz for 10 V output swing |
| CMRR | 70–90 dB (min); suppresses noise coupled equally onto both inputs in sensor front-ends |
| Output Short-Circuit Current | 25 mA (min); supports driving 600 Ω loads directly without external buffering |
| Thermal Resistance θJA | 170°C/W (TO-99); requires heatsinking above ~200 mW dissipation in enclosed environments |
| Operating Temperature | 0°C to +70°C; qualified for commercial-grade instrumentation and test equipment |
Pinout & Package
LM741CH/NOPB uses an 8-pin TO-99 metal can package (9.08 mm × 9.08 mm body) with hermetically sealed construction suitable for high-reliability analog signal paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5 | Offset Null | Connect external 10-kΩ potentiometer wiper to null input stage DC offset; essential for precision DC-coupled applications |
| 2 | Inverting Input | Differential input node accepting feedback signal; high-impedance (0.3–2 MΩ) bipolar junction transistor input |
| 3 | Noninverting Input | Differential input node accepting signal source; same impedance and bias current specs as Pin 2 |
| 4 | V− | Negative supply terminal; must be decoupled with 0.1-μF capacitor placed adjacent to pin for stability |
| 6 | Output | Class-A push-pull output stage capable of ±13 V swing into 2 kΩ load at ±15 V supply |
| 7 | V+ | Positive supply terminal; shares same decoupling requirement as Pin 4 |
| 8 | No Connect | Internally unconnected; must remain floating-no tie to ground or supply |
Key Features
| Feature | Design Value |
|---|---|
| No latch-up on common-mode overvoltage | Operates reliably even when input voltages exceed supply rails-critical for sensor interfaces with unpredictable transients |
| Input/output overload protection | Withstands momentary shorts and ESD events without damage, eliminating need for external clamping diodes |
| Pin-to-pin compatible with LM709C/LM201 | Enables drop-in replacement in legacy designs without PCB rework or schematic modification |
| Internal frequency compensation | Unity-gain stable without external capacitors-simplifies layout and reduces BOM count in basic amplifier stages |
| Hermetic TO-99 metal package | Provides superior moisture resistance and long-term parameter stability vs. plastic packages in harsh environments |
Applications
| DC Amplifier | Comparator |
|---|---|
Use Scenario: Amplifying low-level thermocouple or strain gauge signals in industrial data acquisition systems. IC Role / Device Role / Timing Role: Primary gain stage with DC-coupled input and adjustable offset nulling for zero-drift calibration. Use Value: Input resistance ≥0.3 MΩ and CMRR ≥70 dB minimize measurement error from lead resistance and common-mode noise. | Use Scenario: Threshold detection in power supply monitoring circuits triggering fault shutdown. IC Role / Device Role / Timing Role: Open-loop comparator comparing sensed voltage against reference; no feedback network required. Use Value: No latch-up behavior ensures reliable recovery after input overdrive-eliminates need for reset circuitry. |
| Active Filter | Summing Amplifier |
Use Scenario: Second-order low-pass filtering of audio band signals in test equipment front-ends. IC Role / Device Role / Timing Role: Core amplification element in Sallen-Key topology with RC network defining cutoff frequency. Use Value: 0.5 V/μs slew rate supports ≤80 kHz full-swing operation-sufficient for anti-aliasing below 20 kHz sampling. | Use Scenario: Combining multiple sensor outputs (e.g., temperature, pressure, humidity) into single composite signal. IC Role / Device Role / Timing Role: Inverting summing node with precision resistor network establishing weighted input contribution. Use Value: Input bias current ≤0.8 μA minimizes offset error accumulation across multiple parallel input resistors. |
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 (9.81 mm × 6.35 mm); higher θJA (100°C/W) | Better suited for through-hole prototyping and low-volume board assembly | Select when cost-sensitive commercial designs prioritize ease of hand-soldering over hermetic reliability |
| LM741H/NOPB | Identical TO-99 package but rated for −55°C to +125°C operating range; higher input offset drift | Required for military, aerospace, or extended-temperature industrial control systems | Select when ambient temperature exceeds +70°C or MIL-PRF-38535 compliance is mandated |
Compared with LM741CN/NOPB, LM741CH/NOPB offers superior environmental robustness via metal-can packaging but requires more careful thermal management due to higher junction-to-ambient resistance; versus LM741H/NOPB, it trades extended temperature capability for tighter initial offset and lower drift in commercial-grade applications.
Availability
LM741CH/NOPB is available at Aetrix Electronics and suitable for industrial instrumentation, test equipment, and legacy system repair requiring stable component supply and long-lifecycle support.
Supply support for LM741CH/NOPB 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 digital signal processing technologies.
The LM741 product line was designed as a general-purpose, pin-compatible upgrade to earlier op-amps like LM709, targeting analog signal conditioning in industrial, test, and educational equipment where reliability and design reuse are critical.
FAQ
What is the maximum supply voltage for LM741CH/NOPB?
The LM741CH/NOPB has an absolute maximum supply voltage rating of ±18 V. Operation beyond this limit risks permanent device damage. For reliable long-term performance, Texas Instruments recommends staying within ±10 V to ±18 V under normal conditions, with derating required above +70°C ambient temperature. The LM741CH/NOPB datasheet specifies this limit explicitly in Section 6.1 Absolute Maximum Ratings.
Does LM741CH/NOPB require external compensation capacitors?
No, the LM741CH/NOPB features internal frequency compensation and is unity-gain stable without external capacitors. This eliminates the need for external compensation networks in standard inverting or noninverting amplifier configurations. However, proper 0.1-μF supply decoupling capacitors must be placed adjacent to Pins 4 (V−) and 7 (V+) to maintain stability-this is specified in Section 9 of the LM741CH/NOPB datasheet.
Can LM741CH/NOPB be used as a comparator?
Yes, the LM741CH/NOPB can operate open-loop as a comparator, as confirmed in Section 7.4.1 of its datasheet. When the noninverting input voltage exceeds the inverting input voltage, the output saturates near the positive rail; conversely, it saturates near the negative rail when the inverting input is higher. However, it lacks dedicated comparator features like rail-to-rail output swing or fast propagation delay-so LM741CH/NOPB is best reserved for non-critical, low-speed threshold detection.
What is the purpose of Pin 8 (NC) on LM741CH/NOPB?
Pin 8 on the LM741CH/NOPB is designated "No Connect" (NC) and is internally unconnected. Per TI's Pin Functions table in Section 5 of the LM741CH/NOPB datasheet, this pin must remain electrically floating-neither tied to ground nor to any supply rail. Connecting Pin 8 may cause unpredictable behavior or increased leakage current, compromising input bias specifications and long-term reliability.
How does LM741CH/NOPB differ from LM741H/NOPB?
The LM741CH/NOPB and LM741H/NOPB share identical TO-99 packaging and pinout but differ in temperature qualification: LM741CH/NOPB is rated for 0°C to +70°C operation, while LM741H/NOPB extends to −55°C to +125°C. Electrical parameters such as input offset voltage drift and large-signal voltage gain also vary per grade-LM741H/NOPB exhibits wider initial offset tolerance and higher drift, reflecting its broader military-grade specification per RETS741X.
LM741CH/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-99-8 Metal Can
- 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-99-8
LM741CH/NOPB FAQ
1.How can I place an order for LM741CH/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM741CH/NOPB 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 LM741CH/NOPB reliable?
The price and inventory of LM741CH/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM741CH/NOPB is usually 5 days.
3.What payment methods are accepted for LM741CH/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM741CH/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM741CH/NOPB?
LM741CH/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM741CH/NOPB 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 LM741CH/NOPB?
For technical support, including LM741CH/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM741CH/NOPB requirements.
6.How does Aetrix verify that LM741CH/NOPB is sourced from the original manufacturer or authorized distributors?
All LM741CH/NOPB 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 LM741CH/NOPB meets industry standards.
7.What is the process for return or replacement of LM741CH/NOPB?
All LM741CH/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM741CH/NOPB, 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 LM741CH/NOPB part is unused and in its original packaging.
Return procedure for LM741CH/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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