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Texas Instruments TL082CM
- Part No.:
- TL082CM
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL082CM.pdf
- Description:
- IC OPAMP JFET 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,551
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Product details
Overview
TL082CM from Texas Instruments is a dual JFET-input operational amplifier optimized for high-speed, low-noise analog signal conditioning in industrial and consumer systems. It delivers 4 MHz gain bandwidth, 13 V/μs slew rate, 15 mV max input offset voltage, 50 pA typical input bias current, and operates from ±18 V supplies across 0°C to +70°C - enabling use in active filters, tone controls, and precision sensor front-ends.
For engineers reviewing the TL082CM datasheet, TL082CM pinout, TL082CM application, or TL082CM equivalent, key selection criteria include JFET-input impedance (10¹² Ω), low 1/f noise corner (50 Hz), fast 2 μs settling to 0.01%, THD ≤0.02%, and SOIC-8 package compatibility with legacy LM1558 designs.
Technical Context
The TL082CM integrates two independent high-slew-rate JFET-input op amps with internally trimmed offset voltage (BI-FET II™ architecture), zener-biased input stages enabling stable operation down to ±6 V supplies. Each amplifier features matched high-voltage JFET pairs delivering ultra-low input bias current and high common-mode rejection (100 dB typ).
Its AC performance is defined by a dominant-pole compensated internal architecture yielding 4 MHz unity-gain bandwidth and 13 V/μs slew rate under ±15 V conditions. Input stage protection eliminates external clamps, supporting ±30 V differential input voltage without increased bias current - provided neither input falls below the negative rail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 4 MHz - supports stable closed-loop gain ≥10 at 400 kHz without phase margin loss |
| Slew Rate | 13 V/μs - enables clean 20 kHz full-scale sine output into 2 kΩ load |
| Input Offset Voltage | 15 mV max - ensures ≤150 mV error in unity-gain buffer with ±10 V output swing |
| Input Bias Current | 50 pA typ - minimizes voltage error across >1 MΩ source impedances |
| Input Impedance | 10¹² Ω - preserves signal integrity in high-Z sensor interfaces (e.g., piezoelectric, pH) |
| THD | ≤0.02% - meets audio-grade distortion requirements for tone control and preamp circuits |
| Common-Mode Range | ±11 V to ±15 V - allows rail-to-rail input operation with ±15 V supplies |
| Supply Voltage Range | ±18 V max - supports industrial ±15 V systems with 3 V headroom for transients |
Pinout & Package
TL082CM is housed in an 8-pin SOIC (D) package per JEDEC MS-012 variation AA, 1.75 mm max height, with gull-wing leads and pin 1 identifier in top-left corner. Thermal resistance is 115°C/W junction-to-ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output A | Amplifier A output capable of ±13.5 V swing into 10 kΩ |
| 2 | Inverting Input A | High-impedance JFET node; accepts ±15 V common-mode range |
| 3 | Non-Inverting Input A | Matched to Pin 2 for CMRR ≥100 dB; same voltage limits apply |
| 4 | V− | Negative supply rail connection; must not be exceeded by either input |
| 5 | Non-Inverting Input B | Independent second amplifier input; identical specs to Pin 3 |
| 6 | Inverting Input B | Independent second amplifier input; identical specs to Pin 2 |
| 7 | Output B | Amplifier B output; electrically isolated from Output A |
| 8 | V+ | Positive supply rail; supports up to +18 V with thermal derating |
Key Features
| Feature | Design Value |
|---|---|
| JFET input stage | Enables 10¹² Ω input impedance and 50 pA bias current - critical for photodiode and capacitive sensor interfaces |
| Internally trimmed VOS | 15 mV max offset reduces calibration burden in DC-coupled instrumentation amplifiers |
| Low 1/f noise corner | 50 Hz corner frequency maintains SNR in audio and low-frequency measurement applications |
| Fast 0.01% settling | 2 μs settling enables accurate sampling in 500 kSPS data acquisition front-ends |
| BI-FET II™ architecture | Zener-biased inputs allow stable operation on ±6 V supplies - simplifies low-voltage system design |
| Robust ESD tolerance | SOIC packaging and JFET inputs eliminate need for special handling - unlike MOSFET-input op amps |
Applications
| Active Audio Tone Control | Instrumentation Amplifier Front-End |
|---|---|
Use Scenario: Three-band bass/mid/treble equalization in consumer audio mixers using potentiometer-based feedback networks. IC Role / Device Role / Timing Role: Dual op amp provides independent inverting gain stages for each band with linear-taper potentiometers. Use Value: Low THD (≤0.02%) preserves audio fidelity; wide GBW (4 MHz) ensures flat response up to 20 kHz. |
Use Scenario: High-CMRR signal conditioning for bridge-based pressure sensors in industrial PLC modules. IC Role / Device Role / Timing Role: Forms first-stage difference amplifier with matched resistors; second amplifier buffers and scales output. Use Value: 100 dB CMRR minimizes common-mode interference; 10¹² Ω input prevents loading of high-impedance sensor bridges. |
| Fourth-Order Butterworth Filter | Ohms-to-Volts Transducer Interface |
Use Scenario: Anti-aliasing and reconstruction filtering in 16-bit ADC/DAC subsystems for motor control drives. IC Role / Device Role / Timing Role: Two TL082CM sections implement cascaded Sallen-Key stages for precise cutoff and roll-off. Use Value: 13 V/μs slew rate prevents distortion on 5 Vpp filter outputs; low noise (16 nV/√Hz) maintains SNR at 100 kHz. |
Use Scenario: Linear conversion of RTD or strain gauge resistance changes into calibrated voltage signals for microcontroller ADCs. IC Role / Device Role / Timing Role: Configured as constant-current source + differential amplifier to reject lead-wire resistance. Use Value: 50 pA input bias current avoids error in 1 kΩ–10 kΩ bridge arms; 15 mV VOS enables <0.1% linearity without trimming. |
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 |
|---|---|---|---|
| TL072CP | Lower input noise (18 nV/√Hz vs. 16 nV/√Hz), higher VOS (10 mV typ vs. 5 mV typ), same SOIC-8 footprint | Preferred in low-noise audio where offset is less critical than noise floor | Choose TL072CP when noise spectral density is prioritized over DC accuracy |
| RC4558CP | Bipolar input (vs. JFET), higher IB (300 nA vs. 50 pA), lower GBW (3 MHz), same PDIP-8 package | Suitable for cost-sensitive non-high-Z applications like basic comparators or power supply monitors | Choose RC4558CP only when input impedance >10⁹ Ω is not required and supply current <3.6 mA is acceptable |
Compared with TL082CM, TL072CP offers marginally better noise performance but looser DC specs, while RC4558CP sacrifices JFET advantages for lower cost and wider availability in through-hole formats - making TL082CM the optimal choice for precision high-Z signal chains requiring both speed and DC stability.
Availability
TL082CM is available at Aetrix Electronics and suitable for active audio tone control, instrumentation amplifier front-ends, fourth-order Butterworth filtering, Ohms-to-volts transducer interfaces, and industrial sensor signal conditioning requiring stable component supply across production lifecycles.
Supply support for TL082CM 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, embedded processing, and digital signal technologies with over 90 years of innovation in high-reliability components.
The TL082CM belongs to TI's legacy BI-FET II™ op amp product line, engineered for high-speed, low-input-bias analog signal conditioning in industrial instrumentation, audio, and sensor interface applications where JFET input characteristics are essential.
FAQ
What is the maximum supply voltage rating for TL082CM?
The TL082CM has an absolute maximum supply voltage rating of ±18 V. Operation beyond this limit risks permanent damage. For reliable long-term use, TI specifies ±15 V as the recommended maximum operating supply, ensuring full specification compliance across the 0°C to +70°C temperature range. Derating is required above 70°C ambient.
Does TL082CM support single-supply operation?
TL082CM is specified for dual-supply operation (±Vs), but can be used in single-supply configurations with appropriate level-shifting. Its input common-mode range extends to the negative rail, allowing ground-referenced inputs when V− = 0 V. However, output swing is asymmetric (e.g., 0 V to +13.5 V with +15 V supply), and full AC performance requires proper biasing of the input common-mode voltage.
What is the thermal resistance of TL082CM in SOIC-8 package?
The TL082CM in SOIC-8 (D) package has a junction-to-ambient thermal resistance (θJA) of 115°C/W, as confirmed in the Absolute Maximum Ratings section of the official TI datasheet. This value assumes standard PCB layout with minimal copper; adding thermal vias or copper pours can reduce effective θJA by up to 30%.
How does TL082CM compare to LM358 in terms of input stage technology?
TL082CM uses JFET-input transistors, delivering 10¹² Ω input impedance and 50 pA input bias current, whereas LM358 uses bipolar input transistors with ~200 kΩ input impedance and ~45 nA input bias current. This makes TL082CM suitable for high-impedance sources like piezoelectric sensors, while LM358 is better suited for low-impedance, cost-sensitive applications.
Is TL082CM pin-compatible with LM1558?
Yes, TL082CM is explicitly designed as a pin-compatible upgrade to LM1558 in SOIC-8 and PDIP-8 packages. Both share identical pinouts, supply voltage ranges, and output drive capability. TI confirms this compatibility in the device description, enabling direct replacement in existing LM1558 designs to improve bandwidth, slew rate, and input bias performance without PCB changes.
TL082CM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- J-FET
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 13V/µs
- Gain Bandwidth Product:
- 4 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 50 pA
- Voltage - Input Offset:
- 5 mV
- Current - Supply:
- 3.6mA (x2 Channels)
- Current - Output / Channel:
- 17 mA
- Voltage - Supply Span (Min):
- 36 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TL082CM FAQ
1.How can I place an order for TL082CM through Aetrix?
Please submit a Request for Quotation (RFQ) for TL082CM 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 TL082CM reliable?
The price and inventory of TL082CM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL082CM is usually 5 days.
3.What payment methods are accepted for TL082CM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL082CM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL082CM?
TL082CM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL082CM 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 TL082CM?
For technical support, including TL082CM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL082CM requirements.
6.How does Aetrix verify that TL082CM is sourced from the original manufacturer or authorized distributors?
All TL082CM 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 TL082CM meets industry standards.
7.What is the process for return or replacement of TL082CM?
All TL082CM units undergo pre-shipment inspection (PSI). If there is an issue with TL082CM, 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 TL082CM part is unused and in its original packaging.
Return procedure for TL082CM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL082CM 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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