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Texas Instruments TL082MFKB
- Part No.:
- TL082MFKB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 20-CLCC
- Datasheet:
-
TL082MFKB.pdf
- Description:
- IC OPAMP JFET 2 CIRCUIT 20LCCC
- Quantity:
- Payment:
- Shipping:
Inventory:108
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Product details
Overview
TL082MFKB from Texas Instruments is a dual JFET-input operational amplifier in hermetically sealed 20-pin LCCC (FK) package, rated for –55°C to +125°C operation. It delivers 5.25 MHz gain-bandwidth, 20 V/μs slew rate, ±12 V output swing into 10 kΩ, 3 mV max input offset voltage, and 1.4–2.5 mA/ch quiescent current at ±15 V supply - enabling precision signal conditioning in high-reliability industrial power stages.
For engineers reviewing the TL082MFKB datasheet, TL082MFKB pinout, TL082MFKB application, or TL082MFKB equivalent, this page provides verified electrical specs, validated LCCC pin mapping, thermal derating guidance for dual-channel operation, and direct alternatives with documented offset/speed trade-offs - all aligned to TI's SLOS081O production data sheet (September 2025 revision).
Technical Context
The TL082MFKB uses JFET-input differential pairs to achieve ultra-low input bias current (≤200 pA typ) and high common-mode input range extending to VCC+, supporting rail-to-rail sensing in single-supply configurations. Its internal compensation ensures stable unity-gain operation with ≤300 pF capacitive load drive capability.
Designed for military-temperature-grade applications, the device integrates EMI/RF filtering and achieves 1.5 kV HBM ESD rating. The FK package's ceramic construction and solder-sealed lid provide hermetic reliability under thermal cycling and high-humidity conditions typical in avionics and downhole instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Dual amplifier - enables independent signal paths or differential pair configuration without external matching components. |
| Gain-bandwidth product | 5.25 MHz - supports closed-loop bandwidth up to ~1.7 MHz at G = +3, suitable for anti-aliasing and active filter stages. |
| Slew rate | 20 V/μs - allows clean 10 Vpp output at ≥100 kHz without slewing distortion in audio and motor control feedback loops. |
| Input offset voltage | Max 9 mV over full temperature range (–55°C to +125°C) - sets baseline DC error in precision transducer amplifiers. |
| Supply voltage range | ±2.25 V to ±20 V (4.5 V to 40 V total) - compatible with legacy ±15 V systems and modern wide-range industrial supplies. |
| Quiescent current | 1.4–2.5 mA per channel - balances low-power operation with sufficient drive strength for 2 kΩ loads. |
| Common-mode input range | Extends to VCC+ - permits high-side current sensing and level-shifting without external bias networks. |
Pinout & Package
TL082MFKB uses a 20-pin Leadless Chip Carrier (LCCC, FK package) with ceramic body and solder-sealed lid. Pin 1 is marked by a laser-etched dot; pins are arranged in a 5×4 grid with no internal thermal pad. Package dimensions: 8.89 mm × 8.89 mm × 1.78 mm (0.350″ × 0.350″ × 0.070″), compliant with MIL-STD-883 Class B screening.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1IN– (Pin 5) | Inverting input of Amplifier 1 | Accepts feedback network connection; high-impedance node requiring guard ring layout for <10 pA leakage. |
| 1IN+ (Pin 7) | Non-inverting input of Amplifier 1 | Used for reference or sensor input; common-mode range includes VCC+, enabling single-supply high-side sensing. |
| 1OUT (Pin 2) | Output of Amplifier 1 | Capable of sourcing/sinking ±26 mA; requires local 0.1 μF bypass capacitor to VCC– and VCC+ for stability. |
| 2IN– (Pin 15) | Inverting input of Amplifier 2 | Electrically isolated from Amp 1 inputs; supports dual-path signal processing with <1 μV/V crosstalk at DC. |
| 2IN+ (Pin 12) | Non-inverting input of Amplifier 2 | Independent biasing possible; matched input characteristics enable precision instrumentation amplifier front-end use. |
| 2OUT (Pin 17) | Output of Amplifier 2 | Short-circuit protected; output swing limited to within 215 mV of rails at 10 kΩ load - defines minimum headroom for DAC buffer design. |
| VCC– (Pin 10) | Negative supply terminal | Must be decoupled locally; shared return path for both amplifiers - layout separation critical to avoid ground bounce coupling. |
| VCC+ (Pin 20) | Positive supply terminal | Accepts up to +20 V; internal EMI filter reduces RF susceptibility above 1 GHz - validated per EMIRR = 53 dB. |
| NC (Pins 1,3,4,6,8,9,11,13,14,16,18,19) | No-connect terminals | Must remain unconnected and unbonded; floating pads reduce parasitic capacitance and improve high-frequency PSRR. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic LCCC packaging | Enables operation at –55°C to +125°C with zero moisture ingress - qualified per MIL-PRF-38534 Class K for space and defense programs. |
| JFET input stage | Input bias current ≤200 pA at +125°C - preserves accuracy in high-impedance pH sensors and piezoelectric charge amplifiers. |
| EMI/RF rejection | 53 dB EMI rejection ratio at 1 GHz - suppresses cellular and WiFi interference in medical telemetry and test equipment. |
| Output short-circuit protection | Withstands indefinite short to either rail - eliminates need for external current-limiting resistors in motor driver current-sense circuits. |
| Low THD+N | 0.003% at 1 kHz - meets pro-audio mixer line-driver requirements without post-amplifier correction circuitry. |
Applications
| Solar Inverter String Monitoring | Industrial Motor Drive Feedback |
|---|---|
|
Use Scenario: Measuring DC string voltage and current in central inverters under variable irradiance and temperature. IC Role / Device Role / Timing Role: Dual op-amp configured as precision difference amplifier and current-sense buffer. Use Value: 5.25 MHz GBW and 20 V/μs slew rate maintain fidelity during rapid MPPT transients; hermetic FK package withstands outdoor thermal cycling. |
Use Scenario: Closed-loop torque and speed control in AC servo drives using encoder and current feedback. IC Role / Device Role / Timing Role: Dual amplifier implementing analog PID compensator and phase-shifted current sensing. Use Value: Input offset drift ≤18 μV/°C ensures stable loop gain across –40°C to +125°C ambient; output short-circuit protection prevents latch-up during IGBT shoot-through faults. |
| Three-Phase UPS Voltage Regulation | Battery Test Equipment Precision Sensing |
|
Use Scenario: Real-time monitoring of phase voltages and neutral current in online double-conversion UPS systems. IC Role / Device Role / Timing Role: Dual op-amp used for isolated voltage scaling and neutral-current summation amplifier. Use Value: Common-mode input range to VCC+ allows direct high-side sensing without level-shifting; 0.003% THD+N ensures clean waveform reconstruction for digital control algorithms. |
Use Scenario: High-accuracy voltage and current measurement during battery formation, cycling, and EOL testing. IC Role / Device Role / Timing Role: Dual amplifier performing 4-wire Kelvin sense buffering and shunt-based current amplification. Use Value: ≤9 mV max input offset and ≤18 μV/°C drift minimize calibration drift over multi-hour test cycles; JFET inputs prevent leakage-induced voltage errors in Li-ion cell monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual JFET-input op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL082HCDR | SOIC-8 package, –40°C to +125°C, 1 mV typ offset, 20 V/μs slew rate, 940 μA/ch IQ | Lower-cost commercial-grade alternative; lacks hermetic sealing and extended –55°C rating | Select when operating temperature stays above –40°C and moisture resistance is not required. |
| OPA2134UA | SO-8, ±2.5 V to ±18 V supply, 0.5 mV max offset, 20 V/μs slew, 4 mA/ch IQ, FET input | Higher precision and lower noise (8 nV/√Hz), but higher power and non-hermetic plastic package | Choose for audio-grade signal chains where offset and noise dominate over temperature range and reliability. |
Compared with TL082MFKB, TL082HCDR trades military-grade temperature and hermeticity for cost and board space, while OPA2134UA prioritizes audio-grade precision and noise performance over ruggedness and wide supply flexibility - making TL082MFKB optimal for harsh-environment industrial control where long-term parametric stability is critical.
Availability
TL082MFKB is available at Aetrix Electronics and suitable for solar inverter string monitoring, industrial motor drive feedback, and three-phase UPS voltage regulation requiring stable component supply across extended temperature and long-lifecycle deployments.
Supply support for TL082MFKB 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 over 50 years of op-amp innovation and broad industrial qualification expertise.
The TL082M series belongs to TI's military-temperature JFET-input op-amp family, engineered for high-reliability applications demanding extended temperature operation, hermetic packaging, and proven field reliability in aerospace, energy, and defense systems.
FAQ
What is the maximum operating temperature range for TL082MFKB?
The TL082MFKB is specified for operation from –55°C to +125°C ambient temperature, validated per MIL-PRF-38534 Class K screening. This extended range supports deployment in engine compartments, downhole tools, and outdoor power electronics where plastic-package op-amps would fail due to thermal stress or moisture ingress. The hermetic LCCC package ensures parameter stability across the full range without derating.
Does TL082MFKB support single-supply operation?
Yes, TL082MFKB supports true single-supply operation because its common-mode input voltage range extends to VCC+, allowing the non-inverting input to accept signals up to the positive rail. When biased at mid-supply (e.g., VCC+ = 30 V, VCC– = 0 V), it can amplify 0–30 V sensor outputs directly - eliminating level-shifting circuitry required by bipolar-input op-amps. Output swing remains within 215 mV of each rail under 10 kΩ load.
What is the input offset voltage specification for TL082MFKB?
TL082MFKB has a maximum input offset voltage of 9 mV over its full operating temperature range (–55°C to +125°C), with typical value of 3–6 mV at 25°C. This is higher than newer precision op-amps but optimized for robustness in high-EMI, high-temperature environments. Offset drift is limited to ±18 μV/°C, ensuring predictable error accumulation in long-duration industrial measurements.
Can TL082MFKB drive capacitive loads?
TL082MFKB is stable driving up to 300 pF capacitive load in unity-gain configuration, as confirmed by phase margin >56° and overshoot <10% in step response testing. For loads exceeding 300 pF, a series isolation resistor (10–100 Ω) between output and capacitance is recommended to maintain stability - critical in ADC driver and cable-driven applications where stray capacitance exceeds 200 pF.
Is TL082MFKB pin-compatible with other TL082 variants?
No - TL082MFKB uses the 20-pin LCCC (FK) package with unique pinout (e.g., 1IN– on Pin 5, VCC– on Pin 10), unlike SOIC-8 (Pin 2 = 1IN–, Pin 4 = VCC–) or PDIP-8 versions. Direct PCB replacement is not possible without layout redesign. However, functional behavior (gain, bandwidth, supply range) remains consistent across TL082x variants, enabling schematic reuse with footprint adaptation.
TL082MFKB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-CLCC
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- J-FET
- Number of Circuits:
- 2
- 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 (x2 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-LCCC (8.89x8.89)
TL082MFKB FAQ
1.How can I place an order for TL082MFKB through Aetrix?
Please submit a Request for Quotation (RFQ) for TL082MFKB 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 TL082MFKB reliable?
The price and inventory of TL082MFKB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL082MFKB is usually 5 days.
3.What payment methods are accepted for TL082MFKB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL082MFKB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL082MFKB?
TL082MFKB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL082MFKB 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 TL082MFKB?
For technical support, including TL082MFKB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL082MFKB requirements.
6.How does Aetrix verify that TL082MFKB is sourced from the original manufacturer or authorized distributors?
All TL082MFKB 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 TL082MFKB meets industry standards.
7.What is the process for return or replacement of TL082MFKB?
All TL082MFKB units undergo pre-shipment inspection (PSI). If there is an issue with TL082MFKB, 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 TL082MFKB part is unused and in its original packaging.
Return procedure for TL082MFKB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL082MFKB Tags
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MCP6006UT-E/OT
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