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Texas Instruments TL082CJG
- Part No.:
- TL082CJG
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-CDIP (0.300", 7.62mm)
- Datasheet:
-
TL082CJG.pdf
- Description:
- IC OPAMP JFET 2 CIRCUIT 8CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,146
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Product details
Overview
TL082CJG from Texas Instruments is a dual JFET-input operational amplifier designed for precision analog signal conditioning in industrial and consumer systems. It delivers 13 V/μs slew rate, 3 MHz unity-gain bandwidth, ±12 V output swing (RL ≥ 2 kΩ), 30 pA typical input bias current, and 5 pA typical input offset current - enabling high-fidelity audio preamplification, sensor interface, and active filter design.
For engineers reviewing the TL082CJG datasheet, TL082CJG pinout, TL082CJG application, or TL082CJG equivalent, key selection criteria include its JFET-input stage for ultra-low bias current, wide common-mode range (VCC– + 4 V to VCC+ – 4 V), rail-to-rail compatible supply (±5 V to ±15 V), and CDIP-8 package with offset null capability - critical for DC-coupled instrumentation and low-noise AC signal chains.
Technical Context
The TL082CJG integrates matched high-voltage JFET input transistors with bipolar output stages on a monolithic die, achieving low input offset voltage drift (18 μV/°C) and high CMRR (75 dB min). Its internal compensation ensures stability at unity gain without external components.
It operates across 0°C to 70°C (C-suffix), supports dual-supply configurations only, and features two independent amplifiers sharing no internal crosstalk beyond specified 120 dB attenuation - making it suitable for isolated channel processing in data acquisition and analog computing circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | ±5 V to ±15 V - enables flexible power architecture in mixed-signal systems with legacy ±12 V or modern ±5 V rails |
| Slew Rate | 13 V/μs - supports faithful reproduction of signals up to ~2 MHz at 10 Vpp without distortion |
| Unity-Gain Bandwidth | 3 MHz - sufficient for audio band amplification (20 Hz–20 kHz) with ample phase margin |
| Input Bias Current | 30 pA typical - minimizes voltage error in high-impedance sensor interfaces (e.g., piezoelectric, photodiode) |
| Common-Mode Range | VCC– + 4 V to VCC+ – 4 V - allows operation with inputs near supply rails, easing level-shifting design |
| Output Swing | ±12 V (RL ≥ 2 kΩ) - delivers full dynamic range into standard line-level loads without clipping |
| Total Harmonic Distortion | 0.003% typical - meets fidelity requirements for professional audio signal paths and measurement front-ends |
Pinout & Package
TL082CJG uses an 8-pin Ceramic Dual In-line Package (CDIP) with 0.3-inch width and 0.1-inch lead pitch. The package includes two dedicated offset null pins (N1, N2) for precision DC calibration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier 1) | High-impedance JFET node accepting negative feedback or signal source; requires guarding in sensitive layouts |
| 2 | Non-Inverting Input (Amplifier 1) | High-impedance JFET node for reference or signal injection; matched to Pin 1 for common-mode rejection |
| 3 | Output (Amplifier 1) | Class-AB bipolar output stage capable of ±12 V swing into 2 kΩ load; not rail-to-rail |
| 4 | VCC− | Negative supply rail connection; must be decoupled locally with 0.1 μF ceramic capacitor |
| 5 | Offset Null N2 | Adjustment terminal for Amplifier 1 offset voltage; used with potentiometer between Pins 1 and 5 |
| 6 | Inverting Input (Amplifier 2) | Independent high-impedance input identical in performance to Pin 1; no internal coupling to Amp 1 |
| 7 | Non-Inverting Input (Amplifier 2) | Independent high-impedance input identical in performance to Pin 2; fully isolated from Amp 1 |
| 8 | VCC+ | Positive supply rail connection; must be decoupled locally with 0.1 μF ceramic capacitor |
| - | Offset Null N1 | Adjustment terminal for Amplifier 2 offset voltage; used with potentiometer between Pins 6 and 8 |
Key Features
| Feature | Design Value |
|---|---|
| JFET Input Stage | Enables 10¹² Ω input resistance and sub-100 pA bias current - essential for electrometer-grade signal integrity |
| Output Short-Circuit Protection | Prevents latch-up or destruction during accidental shorts - eliminates need for external current-limiting resistors |
| Low Input Offset Current | 5 pA typical ensures minimal DC error when driving mismatched source impedances in differential configurations |
| Latch-Up-Free Operation | Guarantees immunity to parasitic SCR triggering under overvoltage or ESD stress - improves system robustness |
| High Slew Rate | 13 V/μs enables fast settling in pulse amplification and active filter transient response without overshoot |
Applications
| Audio Preamp | Sensor Signal Conditioning |
|---|---|
Use Scenario: Amplifying low-level microphone or phono cartridge signals before ADC conversion in studio mixers. IC Role / Device Role / Timing Role: Dual-channel voltage amplifier with adjustable gain and offset nulling for DC-coupled, low-noise signal chain. Use Value: 0.003% THD and 13 V/μs slew rate preserve harmonic integrity and transient fidelity across 20 Hz–20 kHz band. | Use Scenario: Converting high-impedance outputs from strain gauges or thermopiles into conditioned voltage for microcontroller sampling. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with matched JFET inputs minimizing bias-induced offset drift. Use Value: 30 pA input bias current prevents significant voltage drop across >1 MΩ sensor sources, maintaining accuracy. |
| Active Filter Design | Industrial Process Control |
Use Scenario: Implementing 2nd-order low-pass or band-pass filters in PLC analog I/O modules for noise suppression. IC Role / Device Role / Timing Role: Dual op-amp building block for cascaded Sallen-Key or state-variable topologies requiring stable phase response. Use Value: 3 MHz unity-gain bandwidth and internal compensation ensure predictable roll-off without external compensation networks. | Use Scenario: Isolating and scaling 4–20 mA loop signals in factory automation controllers with local offset calibration. IC Role / Device Role / Timing Role: Dual-channel transimpedance and level-shifting amplifier with independent offset null pins per channel. Use Value: Dedicated N1/N2 offset adjustment pins allow field calibration of each amplifier without affecting the other channel. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual JFET-input operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL082CP | Same electrical specs but in plastic DIP-8 package; no offset null pins; higher thermal resistance (97°C/W vs 86°C/W) | Lacks offset trimming capability; unsuitable for precision DC-coupled designs requiring <1 mV offset | Select TL082CJG when offset calibration is required; choose TL082CP for cost-sensitive, AC-coupled applications |
| LF353N | Same JFET architecture but lower slew rate (12 V/μs), wider offset voltage range (10 mV max), and no offset null pins | Lower bandwidth and untrimmed offset limit use in high-accuracy, low-drift systems | TL082CJG preferred for tighter offset control and higher slew; LF353N acceptable where budget constraints outweigh precision needs |
Compared with TL082CP and LF353N, TL082CJG uniquely provides offset null terminals in a hermetic CDIP package - delivering superior long-term DC stability and thermal performance for calibrated instrumentation, while maintaining identical gain-bandwidth and noise characteristics.
Availability
TL082CJG is available at Aetrix Electronics and suitable for industrial process control, audio equipment manufacturing, and test & measurement instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TL082CJG 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 decades of heritage in precision op-amps and industrial-grade ICs.
The TL08xx family was engineered for high-fidelity analog signal processing in cost-sensitive yet performance-demanding applications - balancing JFET input advantages with robust bipolar output drive and wide supply flexibility.
FAQ
What is the operating temperature range for TL082CJG?
The TL082CJG is characterized for operation from 0°C to 70°C, as indicated by the 'C' suffix in its part number. This commercial-grade rating makes it suitable for indoor industrial controls, consumer audio gear, and laboratory instruments where ambient conditions remain within this range. Its CDIP package offers better thermal stability than plastic alternatives under sustained load.
Does TL082CJG support single-supply operation?
No, TL082CJG is not designed for true single-supply operation. Its input common-mode range extends only to VCC– + 4 V and VCC+ – 4 V, and its output cannot swing to either rail. It requires dual symmetric supplies (e.g., ±5 V, ±12 V, or ±15 V) to function within datasheet specifications. For single-supply applications, consider rail-to-rail op-amps like the TLV2462.
How do I use the offset null pins on TL082CJG?
TL082CJG provides two independent offset null circuits: Pins 1–5–8 adjust Amplifier 1 offset, and Pins 6–5–8 adjust Amplifier 2 offset. Connect a 10 kΩ potentiometer with wiper to Pin 5 and ends to Pins 1 and 8 for Amp 1; similarly, connect another 10 kΩ pot between Pins 6 and 8 with wiper to Pin 5 for Amp 2. Adjust while monitoring output DC voltage under zero-input condition.
What is the maximum capacitive load TL082CJG can drive?
TL082CJG is stable driving up to 100 pF directly, as verified in Figure 19 of the datasheet using RL = 2 kΩ and CL = 100 pF. Driving larger capacitive loads (e.g., cables or ADC inputs) requires isolation via a series resistor (≥100 Ω) or a dedicated buffer stage to prevent peaking or oscillation. Its internal compensation is optimized for unity-gain stability with purely resistive loads.
Is TL082CJG RoHS compliant?
Yes, TL082CJG meets RoHS Directive 2011/65/EU requirements. Texas Instruments confirms lead-free finish and halogen-free packaging for this CDIP variant, with full compliance documentation available in the official TI product folder and material declarations. No exemptions apply to this part number.
TL082CJG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-CDIP (0.300", 7.62mm)
- 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:
- 10 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-CDIP
TL082CJG FAQ
1.How can I place an order for TL082CJG through Aetrix?
Please submit a Request for Quotation (RFQ) for TL082CJG 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 TL082CJG reliable?
The price and inventory of TL082CJG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL082CJG is usually 5 days.
3.What payment methods are accepted for TL082CJG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL082CJG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL082CJG?
TL082CJG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL082CJG 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 TL082CJG?
For technical support, including TL082CJG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL082CJG requirements.
6.How does Aetrix verify that TL082CJG is sourced from the original manufacturer or authorized distributors?
All TL082CJG 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 TL082CJG meets industry standards.
7.What is the process for return or replacement of TL082CJG?
All TL082CJG units undergo pre-shipment inspection (PSI). If there is an issue with TL082CJG, 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 TL082CJG part is unused and in its original packaging.
Return procedure for TL082CJG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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