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Texas Instruments TL081ID
- Part No.:
- TL081ID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL081ID.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,945
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Product details
Overview
TL081ID from STMicroelectronics is a JFET-input single operational amplifier optimized for high-speed, low-input-current analog signal conditioning in industrial and instrumentation systems. It delivers 16 V/µs slew rate, ±11 V input common-mode range (at ±15 V supply), 10¹² Ω input impedance, and output short-circuit protection - enabling precision DC-coupled amplification and active filtering in sensor front-ends and data acquisition circuits.
For engineers reviewing the TL081ID datasheet, TL081ID pinout, TL081ID application, or TL081ID equivalent, key selection criteria include input bias current (≤20 nA typ), offset voltage drift (10 µV/°C), thermal resistance (125 °C/W for SO-8), and compatibility with ±6 V to ±18 V dual supplies in space-constrained PCB layouts.
Technical Context
The TL081ID uses a monolithic JFET-bipolar hybrid process to achieve high input impedance and low input bias current while maintaining robust large-signal dynamics. Its internal frequency compensation ensures unity-gain stability without external components, and its latch-up free architecture supports operation across -40°C to +105°C ambient.
It features two offset null pins (1 and 5) for precision trimming, rail-to-rail-compatible input stage (±11 V common-mode at ±15 V supply), and symmetrical output swing (±12 V into 10 kΩ). The device lacks rail-to-rail output but maintains >10 mA short-circuit current capability and 45° phase margin under standard test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Slew Rate | 16 V/µs typical - enables faithful reproduction of fast transients up to ~1 MHz in unity-gain follower configurations |
| Input Bias Current | 20 nA max at +25°C - minimizes voltage error in high-impedance sensor interfaces (e.g., photodiode transimpedance amps) |
| Input Impedance | 10¹² Ω - preserves signal integrity in passive filter networks and high-Z source buffering |
| Common-Mode Range | ±11 V at ±15 V supply - supports DC-coupled inputs near supply rails in bipolar signal chains |
| Supply Voltage Range | ±6 V to ±18 V - accommodates legacy industrial power rails and dual-supply mixed-signal systems |
| Gain-Bandwidth Product | 4 MHz typical - sets usable closed-loop bandwidth limit (e.g., ~390 kHz at gain = 10) |
| Output Short-Circuit Duration | Infinite - allows safe continuous fault operation without latch-up or degradation |
Pinout & Package
TL081ID is supplied in an SO-8 (Small Outline Integrated Circuit, 8-pin) plastic micropackage with gull-wing leads, 1.27 mm pitch, and 5.0 mm × 6.2 mm body dimensions. Thermal resistance is 125 °C/W (junction-to-ambient, typical).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Null 1 | Connects to one end of external 100 kΩ potentiometer for fine-tuning input offset voltage |
| 2 | Inverting Input | Primary negative feedback node; accepts signal or reference in inverting amplifier, comparator, or integrator topologies |
| 3 | Non-inverting Input | Positive input terminal; used in non-inverting gain stages, voltage followers, and summing configurations |
| 4 | VCC− | Negative supply rail connection; must be decoupled locally to minimize noise coupling and oscillation risk |
| 5 | Offset Null 2 | Connects to opposite end of same 100 kΩ potentiometer as Pin 1 for balanced null adjustment |
| 6 | Output | Class AB push-pull output stage capable of sourcing/sinking ≥10 mA into resistive loads |
| 7 | VCC+ | Positive supply rail connection; requires local 100 nF ceramic decoupling capacitor per supply pin |
| 8 | No Connect | Internally unconnected; must remain floating - no external tie or pull-up/pull-down |
Key Features
| Feature | Design Value |
|---|---|
| High Input Impedance JFET Stage | 10¹² Ω input resistance reduces loading on high-Z sources like piezoelectric sensors or RC filters |
| Internal Frequency Compensation | Guarantees stable unity-gain operation without external compensation capacitors or resistor networks |
| Output Short-Circuit Protection | Enables robust operation in test fixtures, prototyping, and systems prone to wiring faults or transient overloads |
| Latch-Up Free Operation | Prevents destructive parasitic thyristor conduction during overvoltage or ESD events across supply rails |
| Wide Common-Mode Input Range | ±11 V at ±15 V supply allows direct interfacing with signals referenced to either rail in bipolar systems |
Applications
| Instrumentation Amplifier Front-End | Active Band-Pass Filter |
|---|---|
Use Scenario: Signal conditioning for thermocouple or strain gauge bridges with millivolt-level outputs and high source impedance. IC Role / Device Role / Timing Role: First-stage non-inverting amplifier providing gain and high-impedance buffering before differential amplification. Use Value: 20 nA input bias current prevents significant offset error from bridge resistor imbalance; 10¹² Ω input impedance avoids loading of mV-level sources. | Use Scenario: Audio-frequency band selection in spectrum analyzers or tone detection circuits requiring Q > 20. IC Role / Device Role / Timing Role: Core op-amp in twin-T or multiple-feedback topology implementing selective frequency rejection or passband shaping. Use Value: 4 MHz GBW and 16 V/µs slew rate support clean 1–10 kHz response with minimal phase distortion and overshoot. |
| DC-Coupled Sensor Interface | High-Voltage Comparator Driver |
Use Scenario: Direct coupling of pH electrode or ion-selective sensor outputs to ADC input without AC coupling or level-shifting. IC Role / Device Role / Timing Role: Precision DC amplifier with offset nulling capability to eliminate baseline drift in electrochemical measurements. Use Value: Offset null pins (1 & 5) enable sub-mV calibration; ±11 V common-mode range accommodates electrode potentials up to ±10 V. | Use Scenario: Driving logic-level comparators or analog switches requiring fast, rail-compatible input transitions. IC Role / Device Role / Timing Role: Fast-settling buffer between slow analog sources and high-speed digital decision circuitry. Use Value: 16 V/µs slew rate ensures <100 ns rise time for 10 V steps, minimizing propagation delay skew in timing-critical paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar JFET-input op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL071CDR | Lower input bias current (10 pA typ), lower noise (18 nV/√Hz), but narrower common-mode range (±12 V at ±15 V) | Better for ultra-low-noise audio preamps; less suitable for wide-rail industrial sensing | Choose when noise floor dominates over supply headroom requirements |
| OPA134UA | Higher slew rate (20 V/µs), lower THD (0.00008%), wider GBW (8 MHz), but higher quiescent current (4 mA) | Preferred for high-fidelity audio and precision DAC output buffering | Choose when dynamic performance outweighs power budget constraints |
Compared with TL081ID, TL071CDR offers superior noise and bias current but reduced rail tolerance, while OPA134UA delivers higher speed and fidelity at increased power cost - making TL081ID the optimal balance for cost-sensitive, wide-supply industrial signal chains requiring proven reliability and ease of nulling.
Availability
TL081ID is available at Aetrix Electronics and suitable for industrial sensor interfaces, analog data acquisition modules, and legacy instrumentation systems requiring stable component supply, long-term lifecycle support, and SO-8 footprint compatibility.
Supply support for TL081ID 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, Switzerland, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
The TL081 series belongs to ST's general-purpose JFET-input op-amp product line, engineered for robustness, wide supply flexibility, and ease of use in cost-sensitive analog signal conditioning where precision and speed intersect.
FAQ
What is the maximum operating temperature range for TL081ID?
The TL081ID is rated for operation from -40°C to +105°C ambient temperature. This extended industrial grade range is confirmed in Table 2 of the official ST datasheet (Rev 3, June 2008) and applies specifically to the 'I' temperature suffix variant in SO-8 packaging. Derating of power dissipation above 25°C is required per the Rthja = 125 °C/W specification.
Can TL081ID operate from a single supply?
TL081ID is designed for dual-supply operation (±6 V to ±18 V) and does not support true single-supply operation. Its input common-mode range extends only to within ~4 V of each rail (e.g., ±11 V at ±15 V), and the output cannot swing to either rail. For single-supply applications, rail-to-rail input/output op-amps such as TS912 or LMV321 are recommended alternatives.
How do I connect the offset null pins (1 and 5) for minimum input offset voltage?
Connect a 100 kΩ potentiometer between Pins 1 and 5, with its wiper tied to VCC− (Pin 4). Adjust the pot until output voltage is minimized with inputs shorted and grounded. This configuration balances internal JFET pair mismatches and achieves sub-millivolt offset - critical for DC-coupled precision amplifiers and integrators.
Is TL081ID RoHS-compliant and lead-free?
Yes, TL081ID is supplied in an ECOPACK®-compliant SO-8 package with lead-free second-level interconnect, as documented in Section 6 of the ST datasheet. The inner box label and package marking indicate compliance with JEDEC Standard JESD97, and soldering profiles follow Pb-free reflow guidelines (peak temperature ≤ 260°C).
TL081ID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- J-FET
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 13V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 30 pA
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 1.4mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TL081ID FAQ
1.How can I place an order for TL081ID through Aetrix?
Please submit a Request for Quotation (RFQ) for TL081ID 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 TL081ID reliable?
The price and inventory of TL081ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL081ID is usually 5 days.
3.What payment methods are accepted for TL081ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL081ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL081ID?
TL081ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL081ID 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 TL081ID?
For technical support, including TL081ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL081ID requirements.
6.How does Aetrix verify that TL081ID is sourced from the original manufacturer or authorized distributors?
All TL081ID 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 TL081ID meets industry standards.
7.What is the process for return or replacement of TL081ID?
All TL081ID units undergo pre-shipment inspection (PSI). If there is an issue with TL081ID, 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 TL081ID part is unused and in its original packaging.
Return procedure for TL081ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL081ID Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
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