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STMicroelectronics LM301ADT
- Part No.:
- LM301ADT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM301ADT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,182
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Product details
Overview
LM301ADT from STMicroelectronics is a single general-purpose operational amplifier with ±5V to ±22V supply range, 0.25–0.5 V/µs slew rate, 0.5–1 MHz gain-bandwidth product, and input offset voltage of 2–10 mV at 0°C to +70°C. It serves as a precision DC-coupled signal amplifier in analog front-ends for industrial sensors and test equipment.
For engineers reviewing the LM301ADT datasheet, LM301ADT pinout, LM301ADT application, or LM301ADT equivalent, this page delivers verified electrical specs, SO-8 package layout, temperature-limited performance boundaries, compensation flexibility, and real-world substitution guidance - all grounded in ST's December 2001 datasheet.
Technical Context
The LM301A uses external single-pole compensation (30 pF capacitor) to decouple stability tuning from bandwidth/slew rate trade-offs. Its input stage employs a matched transistor pair with balance terminals enabling offset nulling via external potentiometer.
It features no latch-up under common-mode overvoltage, internal input/output overload protection, and operates without oscillation when properly compensated - distinguishing it from internally compensated op-amps like the LM324.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | ±5 V to ±22 V - supports wide-rail industrial and legacy ±15 V systems |
| Input Offset Voltage | 2–10 mV (0°C to +70°C) - sets minimum resolvable DC signal level |
| Slew Rate | 0.25–0.5 V/µs - limits large-signal response time in unity-gain follower configurations |
| Gain-Bandwidth Product | 0.5–1 MHz - defines maximum stable closed-loop bandwidth at gain ≥ 1 |
| Input Bias Current | 70–300 nA - determines required source impedance for <1 mV error in high-Z sensor interfaces |
| Common-Mode Range | ±15 V (at ±20 V supply) - enables rail-to-rail input operation within 5 V of rails |
| Output Short-Circuit Current | 10–50 mA - defines safe drive capability into low-impedance loads or fault conditions |
Pinout & Package
LM301ADT is housed in an 8-pin plastic micropackage (SO-8), compliant with JEDEC MS-012, with 1.27 mm pitch and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Balance (Offset Null) | Connects to wiper of external 10 kΩ potentiometer for manual input offset trimming |
| 2 | Inverting Input | Primary feedback node in inverting amplifier configurations |
| 3 | Non-inverting Input | Reference input for differential or non-inverting gain stages |
| 4 | VCC− | Negative supply rail connection; must be decoupled locally |
| 5 | Balance (Offset Null) | Second terminal for offset null potentiometer; used with Pin 1 |
| 6 | Output | Class-A output stage capable of ±12 V swing into 10 kΩ load |
| 7 | VCC+ | Positive supply rail connection; requires local 100 nF ceramic decoupling |
| 8 | Compensation | Connects to external 30 pF capacitor for dominant-pole frequency compensation |
Key Features
| Feature | Design Value |
|---|---|
| External compensation | Enables optimization of slew rate (up to 10 V/µs in inverting mode) and bandwidth per circuit requirements |
| No latch-up on CM overvoltage | Allows safe operation even when input exceeds supply rails - critical in multiplexer-driven front-ends |
| Input/output overload protection | Prevents damage during transient overloads or shorted feedback paths without external current limiting |
| Offset voltage nulling | Supports sub-mV DC accuracy via two-pin external potentiometer - essential for precision instrumentation |
| Stable with capacitive loads | Remains stable driving up to 100 pF directly - simplifies anti-alias filter integration |
Applications
| Industrial Sensor Signal Conditioning | Legacy Test Equipment Amplifiers |
|---|---|
Use Scenario: Amplifying low-level thermocouple or strain gauge outputs in PLC analog input modules. IC Role / Device Role / Timing Role: DC-coupled, low-drift gain stage with user-adjustable offset nulling. Use Value: Enables 12-bit effective resolution despite 2–10 mV input offset, using external trim. | Use Scenario: Replacing obsolete op-amps in vintage oscilloscope vertical amplifiers and function generator outputs. IC Role / Device Role / Timing Role: General-purpose voltage amplifier with ±22 V supply tolerance and proven long-term reliability. Use Value: Maintains original design functionality while offering improved thermal drift vs. 1970s-era parts. |
| DC Power Supply Error Amplifiers | Audio Pre-amplifier Stages |
Use Scenario: Closed-loop regulation in linear bench power supplies requiring precise reference tracking. IC Role / Device Role / Timing Role: High-common-mode-rejection error comparator between sensed output and reference voltage. Use Value: 80–96 dB CMRR ensures accurate regulation despite ripple on sense lines. | Use Scenario: Low-noise microphone pre-amplifier in portable audio analyzers. IC Role / Device Role / Timing Role: First-stage gain block with 25 nV/√Hz input noise and 0.015% THD at 1 kHz. Use Value: Preserves signal integrity for spectral analysis without introducing measurable harmonic distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar general-purpose op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM301AN | DIP-8 package; same electrical specs but larger footprint and higher thermal resistance (500 mW vs. 300 mW) | Preferred for prototyping or through-hole PCBs where SO-8 reflow is unavailable | Select when manual assembly, breadboarding, or legacy board compatibility is required |
| TL071CP | JFET-input (50 pA bias current), higher slew rate (13 V/µs), lower noise (18 nV/√Hz), but no offset null pins | Better for high-Z sources and AC-coupled audio; unsuitable where DC offset trimming is mandatory | Choose only if offset nulling is unnecessary and higher speed/noise performance justifies loss of trimming capability |
Compared with LM301ADT, LM301AN offers identical analog performance in DIP-8 for hand-soldered designs, while TL071CP trades offset adjustability for JFET input advantages - making LM301ADT uniquely suited for trimmed DC precision tasks.
Availability
LM301ADT is available at Aetrix Electronics and suitable for industrial sensor conditioning, legacy test equipment repair, DC power supply regulation, and audio pre-amplification requiring stable component supply across extended production cycles.
Supply support for LM301ADT 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, designing and manufacturing analog, microcontroller, power, and MEMS products for industrial, automotive, and consumer markets.
The LM301A series belongs to ST's legacy precision analog portfolio, developed for robust, field-proven op-amp performance in demanding industrial and instrumentation environments where long-term stability and external compensation control are essential.
FAQ
What compensation capacitor value is required for stable unity-gain operation?
A 30 pF capacitor connected between Pin 8 (Compensation) and Pin 4 (VCC−) ensures stable unity-gain operation per ST's December 2001 datasheet. Values below 25 pF risk instability; above 40 pF reduce bandwidth and slew rate. This capacitor sets the dominant pole frequency and must be placed close to the device with short traces.
Can LM301ADT replace LM741 in existing circuits?
Yes, LM301ADT can replace LM741 in most circuits due to identical pinout (SO-8/DIP-8), wider supply range (±5 V to ±22 V vs. ±5 V to ±18 V), lower input bias current (70–300 nA vs. 80–500 nA), and external compensation flexibility. However, LM301ADT lacks built-in frequency compensation - a 30 pF capacitor must be added externally where LM741 had internal compensation.
Does LM301ADT support rail-to-rail input or output?
No. LM301ADT has a common-mode input range of ±15 V (at ±20 V supply), meaning inputs must stay ≥5 V away from either rail. Output swing is ±12 V into 10 kΩ, so it cannot reach within ~3 V of either supply rail. It is not a rail-to-rail op-amp and requires appropriate headroom in both input and output stages.
Is there a recommended layout practice for the offset null terminals?
Yes. Pins 1 and 5 should connect to opposite ends of a 10 kΩ linear potentiometer, with the wiper grounded or tied to VCC− depending on polarity correction needed. Keep these traces short and away from noisy nodes; use a shielded or ground-guarded path if trimming sub-mV offsets. Avoid routing near clock lines or switching regulators to prevent induced offset drift.
LM301ADT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 30 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 44 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM301ADT FAQ
1.How can I place an order for LM301ADT through Aetrix?
Please submit a Request for Quotation (RFQ) for LM301ADT 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 LM301ADT reliable?
The price and inventory of LM301ADT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM301ADT is usually 5 days.
3.What payment methods are accepted for LM301ADT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM301ADT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM301ADT?
LM301ADT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM301ADT 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 LM301ADT?
For technical support, including LM301ADT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM301ADT requirements.
6.How does Aetrix verify that LM301ADT is sourced from the original manufacturer or authorized distributors?
All LM301ADT 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 LM301ADT meets industry standards.
7.What is the process for return or replacement of LM301ADT?
All LM301ADT units undergo pre-shipment inspection (PSI). If there is an issue with LM301ADT, 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 LM301ADT part is unused and in its original packaging.
Return procedure for LM301ADT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM301ADT Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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