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Texas Instruments LM301AH
- Part No.:
- LM301AH
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- TO-99-8 Metal Can
- Datasheet:
-
LM301AH.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT TO99-8
- Quantity:
- Payment:
- Shipping:
Inventory:240
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Product details
Overview
LM301AH from Texas Instruments is a general-purpose operational amplifier with 10 V/μs slew rate, 3 mV maximum input offset voltage over temperature, and 100 nA maximum input bias current over temperature. It operates from ±15 V supply, delivers ±13 V output swing into 2 kΩ, and is specified for 0°C to +70°C ambient operation in TO-99 metal can package. It supports external frequency compensation and is used in precision integrators, fast AC/DC converters, and low-drift sample-and-hold circuits.
For engineers reviewing the LM301AH datasheet, LM301AH pinout, LM301AH application, or LM301AH equivalent, key selection criteria include its externally compensated architecture, guaranteed input offset drift (6 μV/°C max), input bias current stability over temperature, and compatibility with feedforward compensation for high-speed rectification.
Technical Context
The LM301AH uses a bipolar input stage with tailored biasing to minimize input current drift and achieve stable offset performance across its 0°C to +70°C operating range. Its open-loop gain exceeds 25 V/mV at ±15 V supply with 2 kΩ load, and it features internal overload protection on both input and output terminals.
Unlike internally compensated op amps, the LM301AH requires an external 30 pF capacitor between pins 1 and 8 for unity-gain stability, enabling application-specific optimization-such as overcompensation for enhanced phase margin in low-frequency integrators or feedforward compensation for >1 MHz full-wave rectifier bandwidth.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Slew Rate | 10 V/μs - enables fast settling in summing amplifiers and pulse response applications without overshoot when properly compensated. |
| Input Offset Voltage | 3 mV max over 0°C to +70°C - ensures minimal DC error in precision DC-coupled signal conditioning paths. |
| Input Bias Current | 100 nA max over 0°C to +70°C - supports high-impedance sensor interfaces and long-interval timing circuits with low leakage error. |
| Supply Voltage Range | ±15 V - compatible with standard dual-rail lab and industrial power supplies; absolute max ±18 V prevents damage during transient overvoltage. |
| Output Swing | ±13 V into 2 kΩ - delivers rail-to-rail usable dynamic range for analog signal processing before clipping occurs. |
| Common-Mode Rejection | 70 dB min - maintains accuracy when input common-mode voltage varies, critical in differential sensing and instrumentation amplifier front-ends. |
| Compensation | External 30 pF capacitor (pin 1–8) - allows trade-off between bandwidth and stability per circuit requirements, unlike fixed-compensation alternatives. |
Pinout & Package
LM301AH is housed in an 8-pin TO-99 metal can package (package number LMC0008C), with hermetic sealing and low thermal resistance (θJA = 110°C/W). The package provides mechanical robustness and EMI shielding suitable for industrial and test equipment environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Compensation | Connects to external 30 pF capacitor for frequency stabilization; determines dominant pole location and loop stability. |
| 2 | Inverting Input | Differential input node; accepts feedback network connection; high impedance (≥0.5 MΩ) minimizes loading of source. |
| 3 | Non-Inverting Input | Differential input node; referenced to system ground or bias network; matched input impedance improves CMRR. |
| 4 | V− | Negative supply rail connection; must be decoupled locally to suppress noise coupling into input stage. |
| 5 | Offset Null | Adjusts input stage imbalance via external potentiometer; enables sub-mV nulling for ultra-low DC error applications. |
| 6 | Output | Amplified single-ended output; capable of sourcing/sinking ≥10 mA; short-circuit protected for continuous operation. |
| 7 | V+ | Positive supply rail connection; requires local bypass capacitor to maintain PSRR above 70 dB. |
| 8 | Compensation | Second terminal of external compensation capacitor; forms integrator with internal compensation network. |
Key Features
| Feature | Design Value |
|---|---|
| No latch-up on common-mode overrange | Operates safely even when inputs exceed supply rails by ±15 V, eliminating need for clamping diodes in many transducer interfaces. |
| Input overload protection | Withstands ±30 V differential input without damage, supporting robust front-end design in noisy industrial environments. |
| Feedforward compensation support | Enables >1 MHz full-wave rectifier bandwidth without filter delay, verified in TI Figure 42 for fast AC/DC converter implementation. |
| Specified drift characteristics | Average offset drift ≤6 μV/°C and bias current drift ≤0.3 nA/°C over 0°C to +70°C - enables predictable long-term calibration in embedded systems. |
| Freedom from oscillation | Stable with single 30 pF capacitor across pins 1–8 under all specified load and source conditions - reduces layout sensitivity and validation effort. |
Applications
| Integrator Circuits | Fast AC/DC Converters |
|---|---|
Use Scenario: Precision analog integration over seconds to minutes in process control and waveform generation. IC Role / Device Role / Timing Role: Core integrator amplifier with bias current compensation network (TI Figure 44) to cancel drift-induced output ramp. Use Value: Achieves <0.1 nA/°C drift over 0°C to +70°C, enabling stable integration without manual recalibration in unattended systems. |
Use Scenario: High-speed full-wave rectification of AC signals up to 100 kHz without post-rectifier filtering. IC Role / Device Role / Timing Role: Feedforward-compensated op amp configured as precision rectifier (TI Figure 42), replacing diode-based designs. Use Value: Delivers clean DC output with <100 ns recovery time and no ripple from filter capacitors, reducing BOM count and board space. |
| Low-Drift Sample-and-Hold | Instrumentation Amplifier Front-End |
Use Scenario: Capturing and holding analog sensor outputs with microvolt-level fidelity in data acquisition systems. IC Role / Device Role / Timing Role: Hold amplifier with polycarbonate-dielectric hold capacitor (TI Figure 47), minimizing dielectric absorption error. Use Value: Maintains <10 μV droop over 100 ms due to 100 nA max input bias current, preserving resolution in 16-bit+ ADC systems. |
Use Scenario: Differential signal amplification in bridge-based pressure or strain measurement systems. IC Role / Device Role / Timing Role: First-stage gain block in three-op-amp instrumentation topology (TI Figure 43), providing high CMRR and matched input impedance. Use Value: Enables ≥80 dB CMRR with resistor matching alone, avoiding costly laser-trimmed ICs while meeting industrial sensor accuracy requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM301H | Same TO-99 package and pinout, but obsolete non-NOPB variant with leaded finish; identical electrical specs and temp range (0°C to +70°C). | No RoHS compliance; unsuitable for new designs targeting lead-free assembly or modern environmental standards. | Select LM301AH/NOPB for RoHS-compliant production; LM301H only for legacy repair or qualification continuity where leaded finish is mandated. |
| LM307CH | Internally compensated 8-pin DIP op amp; higher 5 mV max offset, lower 0.5 V/μs slew rate, and no external compensation flexibility. | Limited to fixed-gain, low-bandwidth applications; cannot implement feedforward or overcompensation topologies. | Choose LM301AH when external compensation, 10 V/μs speed, or sub-3 mV offset is required; LM307CH only for drop-in replacement where bandwidth and precision are secondary. |
Compared with LM301H and LM307CH, the LM301AH offers RoHS compliance without sacrificing performance, retains full external compensation control for bandwidth/stability tuning, and delivers superior slew rate and offset voltage for high-fidelity analog signal chains in industrial instrumentation.
Availability
LM301AH is available at Aetrix Electronics and suitable for precision integrators, fast AC/DC converters, low-drift sample-and-hold circuits, instrumentation amplifier front-ends, and feedforward-compensated rectifiers requiring stable component supply across extended product lifecycles.
Supply support for LM301AH 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets since 1930.
The LM301AH belongs to TI's legacy general-purpose op amp product line, designed specifically for applications demanding externally adjustable compensation, high DC precision, and robust input/output protection in industrial and test equipment.
FAQ
What is the maximum supply voltage rating for the LM301AH?
The LM301AH has an absolute maximum supply voltage rating of ±18 V. Operation beyond this limit risks permanent damage to internal junctions. For reliable long-term use, TI specifies ±15 V as the recommended maximum operating supply voltage, which also aligns with its guaranteed performance parameters including output swing and slew rate.
Does the LM301AH require external compensation, and what value is recommended?
Yes, the LM301AH requires external frequency compensation: a 30 pF capacitor must be connected between pins 1 and 8. This value ensures unity-gain stability with source resistances below 10 kΩ and stray capacitances under 5 pF. Larger values may be used for overcompensation in low-frequency integrators to improve phase margin.
What is the guaranteed input offset voltage specification for LM301AH over temperature?
The LM301AH guarantees a maximum input offset voltage of 3 mV over its full operating temperature range of 0°C to +70°C. This is confirmed in the Electrical Characteristics table (page 3 of SNOSBS0D), measured at TA = TMAX with RS ≤50 kΩ, and reflects worst-case device variation across production lots.
Can the LM301AH be used in a feedforward-compensated fast AC/DC converter?
Yes, the LM301AH is explicitly validated for feedforward-compensated fast AC/DC converter applications, as shown in TI Figure 42 of SNOSBS0D. Its 10 V/μs slew rate and stable high-frequency response enable full-wave rectification without output filtering, achieving clean DC output with minimal delay and ripple.
What package type and pin configuration does the LM301AH use?
The LM301AH uses an 8-pin TO-99 metal can package (TI package number LMC0008C), with standardized pinout per JEDEC MO-002. Pins are arranged radially: pin 1 (compensation), pin 2 (inverting input), pin 3 (non-inverting input), pin 4 (V−), pin 5 (offset null), pin 6 (output), pin 7 (V+), and pin 8 (compensation).
LM301AH 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 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:
- Through Hole
- Supplier Device Package:
- TO-99-8
LM301AH FAQ
1.How can I place an order for LM301AH through Aetrix?
Please submit a Request for Quotation (RFQ) for LM301AH 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 LM301AH reliable?
The price and inventory of LM301AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM301AH is usually 5 days.
3.What payment methods are accepted for LM301AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM301AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM301AH?
LM301AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM301AH 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 LM301AH?
For technical support, including LM301AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM301AH requirements.
6.How does Aetrix verify that LM301AH is sourced from the original manufacturer or authorized distributors?
All LM301AH 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 LM301AH meets industry standards.
7.What is the process for return or replacement of LM301AH?
All LM301AH units undergo pre-shipment inspection (PSI). If there is an issue with LM301AH, 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 LM301AH part is unused and in its original packaging.
Return procedure for LM301AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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