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TL082ACD Equivalent & Substitute Parts
Part Overview
The TL082ACD is a J-FET input operational amplifier manufactured by STMicroelectronics, configured as a dual-channel (2 circuit) device in an 8-SOIC surface mount package. This component is classified as obsolete, though 65,840 units remain in stock as new original inventory. The TL082ACD is qualified to AEC-Q100 automotive standards and operates across a supply voltage range of 6V to 36V with an operating temperature range of 0°C to 70°C. Due to its obsolete product status, identification of equivalent and substitute parts is necessary for ongoing design support, production continuity, and long-term component availability planning.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Amplifier Type | J-FET |
| Number of Circuits | 2 |
| Slew Rate | 16 V/µs |
| Gain Bandwidth Product | 3 MHz |
| Current - Input Bias | 20 pA |
| Voltage - Input Offset | 3 mV |
| Current - Supply | 1.4 mA |
| Current - Output / Channel | 10 mA |
| Voltage - Supply Span (Min) | 6 V |
| Voltage - Supply Span (Max) | 36 V |
| Operating Temperature | 0°C ~ 70°C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Grade | Automotive |
| Qualification | AEC-Q100 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the TL082ACD is determined by alignment across the following critical parameters: amplifier type (J-FET), number of circuits (2), package form factor (8-SOIC surface mount), supply voltage compatibility (minimum 6V to maximum 36V), and operating temperature range (0°C to 70°C).
The substitute parts identified fall into two functional categories:
Category 1: J-FET Amplifiers (AD648 Series) Parts AD648JRZ, AD648JRZ-REEL, AD648JRZ-REEL7, and AD648KRZ maintain J-FET input architecture with dual-channel configuration in 8-SOIC packaging. These devices operate within the required supply voltage range (9V to 36V minimum/maximum) and temperature range (0°C to 70°C). All are active products with ROHS3 compliance and AEC-Q100 qualification path compatibility. Differences exist in slew rate (1.8 V/µs versus 16 V/µs), gain bandwidth product (1 MHz versus 3 MHz), and input bias current specifications, reflecting performance trade-offs in the J-FET amplifier class.
Category 2: General Purpose Amplifiers (AD706 Series) Parts AD706ARZ, AD706ARZ-REEL, AD706ARZ-REEL7, AD706JRZ, AD706JRZ-REEL, and AD706JRZ-REEL7 represent general-purpose operational amplifiers with dual-channel configuration in 8-SOIC packaging. These devices operate across a wider supply voltage range (4V to 36V) and extended temperature range (-40°C to 85°C for ARZ variants; 0°C to 70°C for JRZ variants). All are active products with ROHS3 compliance. The AD706 series exhibits lower slew rate (0.15 V/µs) and reduced gain bandwidth product (800 kHz), reflecting a different performance class suitable for applications not requiring high-speed operation.
Packaging variants (Tube, Cut Tape, Digi-Reel) do not affect electrical substitution but address supply chain and assembly process requirements.
Parameter Comparison
| Parameter | TL082ACD | AD648JRZ | AD648KRZ | AD706ARZ | AD706JRZ |
|---|---|---|---|---|---|
| Manufacturer | STMicroelectronics | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. |
| Product Status | Obsolete | Active | Active | Active | Active |
| Amplifier Type | J-FET | J-FET | J-FET | General Purpose | General Purpose |
| Number of Circuits | 2 | 2 | 2 | 2 | 2 |
| Slew Rate | 16 V/µs | 1.8 V/µs | 1.8 V/µs | 0.15 V/µs | 0.15 V/µs |
| Gain Bandwidth Product | 3 MHz | 1 MHz | 1 MHz | 800 kHz | 800 kHz |
| Current - Input Bias | 20 pA | 5 pA | 3 pA | 50 pA | 50 pA |
| Voltage - Input Offset | 3 mV | 750 µV | 300 µV | 30 µV | 30 µV |
| Current - Supply | 1.4 mA | 340 µA (x2 Channels) | 340 µA (x2 Channels) | 750 µA | 750 µA |
| Current - Output / Channel | 10 mA | 15 mA | 15 mA | 15 mA | 15 mA |
| Voltage - Supply Span (Min) | 6 V | 9 V | 9 V | 4 V | 4 V |
| Voltage - Supply Span (Max) | 36 V | 36 V | 36 V | 36 V | 36 V |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C | -40°C ~ 85°C (ARZ) / 0°C ~ 70°C (JRZ) | 0°C ~ 70°C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
For Direct J-FET Substitution: The AD648 series (AD648JRZ, AD648JRZ-REEL, AD648JRZ-REEL7, AD648KRZ) provides the closest functional equivalence to the TL082ACD. All variants maintain J-FET input architecture, dual-channel configuration, and 8-SOIC packaging. These parts are active products with ROHS3 compliance and operate within the required 0°C to 70°C temperature range. The AD648KRZ variant offers superior input offset voltage (300 µV) and input bias current (3 pA) specifications compared to the AD648JRZ variants (750 µV and 5 pA respectively). Supply voltage compatibility is maintained across the 9V to 36V range, though the TL082ACD minimum of 6V is not matched; applications requiring operation below 9V require circuit redesign. Slew rate and gain bandwidth product are reduced in the AD648 series, necessitating verification for time-critical signal processing applications.
For General Purpose Applications: The AD706 series (AD706ARZ, AD706ARZ-REEL, AD706ARZ-REEL7, AD706JRZ, AD706JRZ-REEL, AD706JRZ-REEL7) offers substitution for applications where J-FET input characteristics are not essential. All variants are active products with ROHS3 compliance and 8-SOIC packaging. The AD706ARZ variants extend operating temperature to -40°C to 85°C and minimum supply voltage to 4V, providing broader environmental compatibility. The AD706JRZ variants maintain the 0°C to 70°C temperature range matching the TL082ACD. The AD706 series exhibits significantly lower slew rate (0.15 V/µs) and gain bandwidth product (800 kHz), restricting use to low-frequency and DC applications.
Packaging Considerations: Tube packaging (standard) is suitable for manual assembly and small-volume production. Cut Tape (CT) and Digi-Reel variants are optimized for automated pick-and-place assembly. Selection between packaging formats does not affect electrical performance and should be based on assembly process requirements and supply chain logistics.
Compliance and Qualification: All identified substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the TL082ACD. Automotive-grade qualification (AEC-Q100) is inherent to the TL082ACD; substitute parts from Analog Devices are suitable for automotive applications through established qualification pathways.
Frequently Asked Questions (FAQ)
Q: Can the AD648 series directly replace the TL082ACD in all applications? A: The AD648 series maintains J-FET input architecture and dual-channel 8-SOIC configuration, enabling direct pin-compatible substitution. However, performance differences exist: slew rate is reduced from 16 V/µs to 1.8 V/µs, and gain bandwidth product decreases from 3 MHz to 1 MHz. Applications requiring high-speed signal processing or wide bandwidth must be re-evaluated. Additionally, the minimum supply voltage is 9V for AD648 variants versus 6V for the TL082ACD; circuits operating below 9V require modification.
Q: What is the difference between AD648JRZ and AD648KRZ? A: Both are J-FET amplifiers in 8-SOIC packaging with identical slew rate (1.8 V/µs) and gain bandwidth product (1 MHz). The AD648KRZ offers improved precision specifications: input offset voltage of 300 µV compared to 750 µV, and input bias current of 3 pA compared to 5 pA. Selection depends on application requirements for input offset and bias current performance.
Q: Are the AD706 series parts suitable replacements for the TL082ACD? A: The AD706 series provides functional substitution only for applications not requiring J-FET input characteristics or high-speed operation. These are general-purpose amplifiers with significantly lower slew rate (0.15 V/µs) and gain bandwidth product (800 kHz), suitable for DC and low-frequency applications. The AD706 series is not recommended for applications requiring the TL082ACD's high-speed performance or J-FET input advantages.
Q: What is the difference between Tube, Cut Tape, and Digi-Reel packaging? A: Tube packaging is standard for manual assembly and small-volume production. Cut Tape (CT) packaging is supplied on continuous tape for automated pick-and-place assembly. Digi-Reel variants combine cut tape with Analog Devices' Digi-Reel system for enhanced supply chain management. All three packaging formats contain electrically identical components; selection is based on assembly process and supply chain requirements.
Q: Does the AD648 series maintain automotive qualification? A: The AD648 series is manufactured by Analog Devices with ROHS3 compliance and MSL 1 rating, consistent with automotive-grade requirements. These parts are suitable for automotive applications through established qualification pathways. Specific AEC-Q100 certification status should be confirmed with the supplier for critical automotive programs.
Q: What is the minimum supply voltage for each substitute part? A: The TL082ACD operates from 6V minimum. The AD648 series (all variants) requires 9V minimum, necessitating circuit redesign for applications operating below 9V. The AD706 series operates from 4V minimum, providing broader low-voltage compatibility. Supply voltage requirements must be verified against application specifications before substitution.
Q: Can packaging variants (Tube, Cut Tape, Digi-Reel) be mixed in production? A: Yes. All packaging variants of a given part number (e.g., AD648JRZ, AD648JRZ-REEL, AD648JRZ-REEL7) contain electrically identical components. Packaging variants can be used interchangeably from an electrical standpoint; however, assembly process compatibility and supply chain logistics should be considered for production consistency.
Q: What inventory levels are available for substitute parts? A: Current inventory levels are provided in the part specifications. AD648 series variants range from 1,434 to 7,928 units in stock. AD706 series variants range from 2,874 to 26,676 units in stock. The TL082ACD maintains 65,840 units in stock as new original inventory. Inventory levels are subject to change and should be confirmed with the supplier for production planning.
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