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Texas Instruments LM301A-MWC
- Part No.:
- LM301A-MWC
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- Die
- Datasheet:
-
LM301A-MWC.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT WAFERSALE
- Quantity:
- Payment:
- Shipping:
Inventory:3,666
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Product details
Overview
LM301A-MWC from Texas Instruments is a general-purpose operational amplifier optimized for commercial-temperature applications (0°C to +70°C), featuring 3 mV max input offset voltage, 100 nA max input bias current, and 10 V/μs slew rate in summing configuration. It supports ±15 V supply operation, delivers ±13 V output swing into 2 kΩ, and is widely used in precision integrators, sample-and-hold circuits, and low-frequency waveform generation.
For engineers reviewing the LM301A-MWC datasheet, LM301A-MWC pinout, LM301A-MWC application, or LM301A-MWC equivalent, key selection considerations include its external compensation flexibility, input current drift of 0.1 nA/°C over 0°C to +70°C, guaranteed common-mode rejection ratio of 70 dB, and compatibility with feedforward compensation for fast AC/DC conversion.
Technical Context
The LM301A-MWC employs a classic bipolar input stage with externally adjustable frequency compensation via a single 30 pF capacitor, enabling optimization for stability or bandwidth-e.g., overcompensation for >60° phase margin in low-frequency integrators or reduced capacitance for >3 MHz unity-gain bandwidth in fast followers. Its biasing circuitry minimizes temperature-induced input current drift.
It features built-in input and output overload protection, operates without latch-up when common-mode voltage exceeds rails, and maintains stable closed-loop performance with capacitive loads up to 100 pF-provided isolation networks or lead compensation are applied beyond that threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±5 V to ±15 V - Supports standard dual-rail analog systems without derating. |
| Input Offset Voltage | 3 mV max (0°C to +70°C) - Enables sub-10 mV error in DC-coupled gain stages. |
| Input Bias Current | 100 nA max (0°C to +70°C) - Allows high-impedance sensor interfacing with <1 mV error across 10 MΩ sources. |
| Slew Rate | 10 V/μs (summing amp config) - Delivers 15 kHz full-power bandwidth at ±10 V output swing. |
| Common-Mode Rejection | 70 dB min - Maintains accuracy in single-supply-derived reference buffers with rail-to-rail common-mode shifts. |
| Output Swing | ±13 V into 2 kΩ (VS = ±15 V) - Drives legacy ±12 V logic interfaces and analog meter movements directly. |
| Compensation | External 30 pF capacitor - Permits tailored loop response: stable integration (≥100 pF) or wideband amplification (≤15 pF). |
Pinout & Package
LM301A-MWC is packaged in an 8-pin TO-99 metal can (package number LMC0008C), with hermetic sealing and center-tab thermal path. Pin 1 is identified by a dot or bevel; the tab is electrically connected to Pin 4 (V−).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (−) | High-impedance differential node; requires guarding if used with >100 pF stray capacitance. |
| 2 | Non-Inverting Input (+) | Accepts common-mode voltages up to ±15 V; no latch-up when exceeded. |
| 3 | Offset Null (Adjust) | Connects to potentiometer wiper for manual Vos trimming; unused pins left open. |
| 4 | V− Supply | Internally tied to metal tab; must be thermally anchored to PCB ground plane for 100°C junction limit. |
| 5 | Offset Null (Adjust) | Paired with Pin 3 for balanced nulling; symmetric resistor network required for <0.5 mV residual offset. |
| 6 | Output | Capable of ±13 V into 2 kΩ; short-circuit protected but requires series resistor when driving test points. |
| 7 | V+ Supply | Accepts up to ±15 V; reverse polarity >1 V risks internal fuse blowout. |
| 8 | Compensation | Connects external 30 pF capacitor to Pin 7 (V+) for unity-gain stability; feedforward use enables >1 MHz rectifier bandwidth. |
Key Features
| Feature | Design Value |
|---|---|
| Externally compensated architecture | Enables bandwidth/stability trade-off tuning: 10× higher small-signal BW than fixed-compensated op-amps in same family. |
| No latch-up on common-mode overvoltage | Operates reliably even when inputs exceed supply rails-critical for sensor fault tolerance in industrial monitoring. |
| Input overload protection | Survives ±30 V differential input without damage-eliminates need for external clamping diodes in transducer front-ends. |
| Low input current drift | 0.1 nA/°C over 0°C to +70°C - ensures <7 nA total drift in 70°C ambient rise, preserving integrator linearity. |
| Feedforward compensation support | Permits fast full-wave rectifier design without output filtering-reduces component count in AC-DC converter feedback paths. |
Applications
| Integrator Circuits | Sample-and-Hold Systems |
|---|---|
Use Scenario: Precision long-interval integration of low-level sensor currents (e.g., photodiode leakage, pH electrode output) over seconds to minutes. IC Role / Device Role / Timing Role: Integrator core with bias-current compensation network (R1/R2/C1 per Figure 34), using LM301A-MWC's low drift and external nulling. Use Value: Achieves <0.01% drift/hour due to 0.1 nA/°C input current drift and trimmable offset-enabling accurate charge accumulation without periodic auto-zero. | Use Scenario: Capturing and holding analog signals from multiplexed sensor arrays in data acquisition systems operating at ≤10 kHz sampling rates. IC Role / Device Role / Timing Role: Buffer and hold amplifier with low droop rate, leveraging LM301A-MWC's 100 nA max input bias current and guarded input layout. Use Value: Maintains <10 mV droop over 100 ms hold time using 1 nF hold capacitor-reducing need for active reset circuitry. |
| Low-Frequency Oscillators | AC/DC Signal Conversion |
Use Scenario: Generating stable sine, square, or triangle waves below 100 kHz for calibration sources and function generators. IC Role / Device Role / Timing Role: Core amplifier in Wien bridge or phase-shift oscillator topologies (Figure 33), exploiting LM301A-MWC's low noise and predictable phase response. Use Value: Delivers THD <0.5% at 10 kHz due to 10 V/μs slew rate and 70 dB CMRR-minimizing harmonic distortion in reference signal chains. | Use Scenario: Converting AC line voltage or audio signals to proportional DC levels in power metering and envelope detection. IC Role / Device Role / Timing Role: Feedforward-compensated full-wave rectifier (Figure 42), using LM301A-MWC's external compensation pin to bypass slow internal poles. Use Value: Achieves <1 µs response time and <50 mV ripple without output filter-enabling real-time RMS computation in energy-monitoring ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM301AH/NOPB | Same die, TO-99 package with Pb-free finish; identical electrical specs and temp range (0°C to +70°C). | No functional difference; differs only in RoHS compliance and marking. | Select LM301AH/NOPB when lead-free assembly or TI's current production status is required. |
| TL071CP | JFET-input (50 pA bias), higher GBP (3 MHz), but no external compensation pin and 16 V max supply. | Better for high-Z sources and audio; unsuitable for feedforward rectifiers or precise integrators needing adjustable compensation. | Choose TL071CP only when ultra-low input current outweighs need for compensation flexibility and ±15 V operation. |
Compared with LM301A-MWC, LM301AH/NOPB offers identical performance with RoHS compliance, while TL071CP trades compensation control and supply headroom for lower input current-making LM301A-MWC the sole choice for applications requiring feedforward rectification or drift-critical integration.
Availability
LM301A-MWC is available at Aetrix Electronics and suitable for precision analog measurement, industrial sensor conditioning, and legacy equipment repair requiring stable component supply across extended lifecycle programs.
Supply support for LM301A-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 global semiconductor leader specializing in analog and embedded processing technologies, with decades of heritage in precision op-amp design and manufacturing.
The LM301A-MWC belongs to TI's legacy LM101A/LM201A/LM301A series-engineered for reliability in commercial-grade instrumentation where external compensation, overload resilience, and low-drift integration are essential.
FAQ
What is the maximum supply voltage rating for LM301A-MWC?
The LM301A-MWC has an absolute maximum supply voltage rating of ±18 V, but its specified operating range is ±5 V to ±15 V. Operation at ±18 V is not guaranteed for parametric performance and may reduce long-term reliability. All electrical characteristics in the datasheet-including input offset voltage, slew rate, and output swing-are validated only within the ±5 V to ±15 V range under 0°C to +70°C conditions. Exceeding ±15 V voids specification compliance for LM301A-MWC.
Does LM301A-MWC support external frequency compensation, and how is it implemented?
Yes, LM301A-MWC supports external frequency compensation via Pin 8 (Compensation), which connects to a single capacitor between Pin 8 and Pin 7 (V+). A 30 pF capacitor provides unity-gain stability; reducing capacitance increases bandwidth (e.g., 15 pF enables >3 MHz small-signal response), while increasing it improves phase margin for integrators. Feedforward compensation-using an RC network from output to Pin 8-enables LM301A-MWC to function as a fast full-wave rectifier without filtering, as documented in Figure 42 of the LM301A-MWC datasheet.
What is the input bias current drift specification for LM301A-MWC over temperature?
The LM301A-MWC exhibits an average temperature coefficient of input bias current of 0.1 nA/°C over the full 0°C to +70°C operating range, as confirmed in the Electrical Characteristics table (page 3 of SNOSBS0D). This means total input bias current drift remains within ±7 nA across the entire temperature span-critical for maintaining accuracy in long-duration integrators and high-impedance transducer interfaces. The value is measured under standard test conditions (VS = ±15 V, RS ≤ 50 kΩ) and applies specifically to the LM301A variant, not LM101A or LM201A.
Can LM301A-MWC be used in single-supply configurations?
LM301A-MWC is designed for dual-supply operation (±5 V to ±15 V) and does not support true single-supply operation down to ground. Its input common-mode range extends to ±15 V with ±15 V supplies but does not include the negative rail-meaning it cannot accept inputs near 0 V when powered from +15 V/0 V. For single-rail applications, level-shifting networks or rail-to-rail input op-amps like the TLV2461 are recommended. LM301A-MWC's specified input voltage range (e.g., +15 V, −13 V with ±15 V supplies) confirms its asymmetry and dual-supply dependency.
Is LM301A-MWC pin-compatible with LM301AH or LM301AH/NOPB?
Yes, LM301A-MWC is mechanically and electrically pin-compatible with LM301AH and LM301AH/NOPB, as all three share the same TO-99 (LMC0008C) package, identical pinout (per Figure 49 and 51), and identical electrical specifications across 0°C to +70°C. The "MWC" suffix denotes a specific TI manufacturing lot or packaging variant-not a functional deviation-and LM301A-MWC meets all LM301A-N family specifications in SNOSBS0D. No PCB layout changes are required when substituting among these variants.
LM301A-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 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 70 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 1.8mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Wafersale
LM301A-MWC FAQ
1.How can I place an order for LM301A-MWC through Aetrix?
Please submit a Request for Quotation (RFQ) for LM301A-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 LM301A-MWC reliable?
The price and inventory of LM301A-MWC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM301A-MWC is usually 5 days.
3.What payment methods are accepted for LM301A-MWC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM301A-MWC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM301A-MWC?
LM301A-MWC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM301A-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 LM301A-MWC?
For technical support, including LM301A-MWC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM301A-MWC requirements.
6.How does Aetrix verify that LM301A-MWC is sourced from the original manufacturer or authorized distributors?
All LM301A-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 LM301A-MWC meets industry standards.
7.What is the process for return or replacement of LM301A-MWC?
All LM301A-MWC units undergo pre-shipment inspection (PSI). If there is an issue with LM301A-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 LM301A-MWC part is unused and in its original packaging.
Return procedure for LM301A-MWC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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