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TL082SG-13 Equivalent & Substitute Parts
Part Overview
The TL082SG-13 is a J-FET input operational amplifier manufactured by Diodes Incorporated, configured as a dual-channel (2 circuit) device in an 8-SOIC surface mount package. This component is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design requirements and production continuity. The TL082SG-13 operates across a supply voltage range of 10V to 30V with a slew rate of 13V/µs and gain bandwidth product of 4 MHz, making it suitable for applications requiring low input bias current and moderate bandwidth performance.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | J-FET | — |
| Number of Circuits | 2 | — |
| Slew Rate | 13 | V/µs |
| Gain Bandwidth Product | 4 | MHz |
| Current - Input Bias | 30 | pA |
| Voltage - Input Offset | 3 | mV |
| Current - Supply (x2 Channels) | 1.4 | mA |
| Current - Output / Channel | 40 | mA |
| Voltage - Supply Span (Min) | 10 | V |
| Voltage - Supply Span (Max) | 30 | V |
| Operating Temperature | -40 to 85 | °C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitution of the TL082SG-13 is determined by compatibility across the following critical parameters: amplifier type (J-FET vs. General Purpose), number of circuits (dual-channel requirement), package form factor (8-SOIC with 0.154" width), surface mount mounting type, and electrical performance specifications including slew rate, gain bandwidth product, input bias current, and supply voltage range.
The substitute parts are grouped into two categories:
Category 1: Direct J-FET Equivalents (Preferred) Parts maintaining J-FET amplifier topology with enhanced or equivalent electrical performance. These include ADTL082ARZ, ADTL082ARZ-REEL, and ADTL082ARZ-REEL7 from Analog Devices Inc. These devices preserve the J-FET input architecture while offering improved specifications and active product status.
Category 2: General Purpose Alternatives Parts utilizing general purpose amplifier topology as functional alternatives. These include BA4558F-E2, BA4558RF-E2, LM258DR2G, LM2904VDR2G, LM358DR2G, LM358EDR2G, and MC33072DR2G. These devices provide dual-channel operation in compatible packages but with different amplifier topologies and electrical characteristics.
Substitution compatibility is established through matching package geometry (8-SOIC surface mount), dual-channel configuration, and electrical parameter ranges that satisfy the original application requirements.
Parameter Comparison
| Parameter | TL082SG-13 | ADTL082ARZ | ADTL082ARZ-REEL | ADTL082ARZ-REEL7 | BA4558F-E2 | BA4558RF-E2 | LM258DR2G | LM2904VDR2G | LM358DR2G | LM358EDR2G | MC33072DR2G |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Diodes Inc. | Analog Devices | Analog Devices | Analog Devices | Rohm Semi. | Rohm Semi. | onsemi | onsemi | onsemi | onsemi | onsemi |
| Amplifier Type | J-FET | J-FET | J-FET | J-FET | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose |
| Number of Circuits | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Slew Rate (V/µs) | 13 | 20 | 20 | 20 | 1.2 | 1 | — | — | — | — | 13 |
| Gain Bandwidth Product (MHz) | 4 | 5 | 5 | 5 | 2 | 2 | 1 | 1 | 1 | — | 4.5 |
| Current - Input Bias (pA) | 30 | 2 | 2 | 2 | 60 nA | 60 nA | 45 nA | 45 nA | 45 nA | 45 nA | 100 nA |
| Voltage - Input Offset (mV) | 3 | 1.5 | 1.5 | 1.5 | 0.5 | 0.5 | 2 | 7 | 2 | 2 | 1 |
| Current - Supply (mA, x2 Channels) | 1.4 | 1.2 | 1.2 | 1.2 | — | 3 | 0.8 | 1.5 | 0.8 | 0.8 | 1.9 |
| Current - Output / Channel (mA) | 40 | 27 | 27 | 27 | 10 | 10 | 40 | 40 | 40 | 40 | 30 |
| Voltage - Supply Span Min (V) | 10 | 8 | 8 | 8 | 8 | 8 | 3 | 3 | 3 | 3 | 3 |
| Voltage - Supply Span Max (V) | 30 | 36 | 36 | 36 | 30 | 30 | 32 | 32 | 32 | 32 | 44 |
| Operating Temperature (°C) | -40 to 85 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 85 | -40 to 105 | -25 to 85 | -40 to 125 | 0 to 70 | 0 to 70 | -40 to 85 |
| Package / Case | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.173", 4.40mm) | 8-SOIC (0.173", 4.40mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
Primary Recommendation: ADTL082ARZ Series (Analog Devices)
The ADTL082ARZ, ADTL082ARZ-REEL, and ADTL082ARZ-REEL7 represent the most direct substitutes for the TL082SG-13. These parts maintain J-FET amplifier topology while offering superior electrical performance and active product status. All three variants feature identical electrical specifications with slew rate of 20V/µs (exceeding the original 13V/µs), gain bandwidth product of 5 MHz (exceeding the original 4 MHz), and significantly lower input bias current of 2 pA (compared to 30 pA). The supply voltage range extends to 36V maximum (versus 30V), and operating temperature range extends to 125°C. All variants are ROHS3 compliant and maintain the required 8-SOIC (0.154", 3.90mm) package geometry. Packaging options include tube (ADTL082ARZ), cut tape with Digi-Reel (ADTL082ARZ-REEL and ADTL082ARZ-REEL7), providing flexibility for different procurement and assembly requirements.
Secondary Recommendation: MC33072DR2G (onsemi)
The MC33072DR2G provides an alternative with general purpose amplifier topology, matching the original slew rate of 13V/µs and exceeding the gain bandwidth product with 4.5 MHz. This part maintains dual-channel configuration in the compatible 8-SOIC (0.154", 3.90mm) package and offers extended supply voltage range to 44V maximum. Operating temperature range matches the original at -40°C to 85°C. The MC33072DR2G is active and ROHS3 compliant.
Alternative Options: LM258DR2G, LM358DR2G, LM2904VDR2G
These general purpose alternatives provide dual-channel operation in compatible packages with active product status and ROHS3 compliance. However, these parts feature reduced gain bandwidth product (1 MHz) and lower slew rate specifications compared to the original TL082SG-13. Selection of these alternatives is appropriate only when application requirements do not demand the higher bandwidth and slew rate performance of the original device.
Not Recommended: BA4558F-E2 and BA4558RF-E2
While these parts provide dual-channel general purpose amplification in surface mount packages, they exhibit significantly reduced slew rate (1.2V/µs and 1V/µs respectively) and gain bandwidth product (2 MHz), making them unsuitable for applications requiring the performance characteristics of the TL082SG-13.
Frequently Asked Questions (FAQ)
Q: Why is the TL082SG-13 classified as obsolete?
A: The TL082SG-13 is designated as obsolete by the manufacturer, indicating discontinued production. Active equivalent parts are necessary to ensure design continuity and component availability for new production and maintenance applications.
Q: What is the primary difference between J-FET and General Purpose amplifier types?
A: J-FET input amplifiers feature extremely low input bias current (measured in picoamperes) and high input impedance, making them suitable for high-impedance signal sources and precision measurement applications. General purpose amplifiers typically exhibit higher input bias current (measured in nanoamperes) but offer broader performance characteristics and lower cost. Selection depends on specific application requirements.
Q: Are the ADTL082ARZ variants electrically identical?
A: Yes. ADTL082ARZ, ADTL082ARZ-REEL, and ADTL082ARZ-REEL7 are electrically identical. The designations reflect packaging and delivery format differences: tube packaging versus cut tape with Digi-Reel options. Selection among these variants depends on procurement and assembly process requirements.
Q: Can I substitute a general purpose amplifier for the J-FET TL082SG-13?
A: General purpose amplifiers can substitute the TL082SG-13 only when application requirements do not depend on the extremely low input bias current characteristic of J-FET devices. Applications involving high-impedance signal sources, precision instrumentation, or low-noise requirements typically require J-FET input devices. Verify application specifications before selecting general purpose alternatives.
Q: What is the significance of the 8-SOIC package width specification (0.154" vs. 0.173")?
A: The 8-SOIC package width specification indicates the physical dimensions of the component body. The TL082SG-13 uses 0.154" width (3.90mm), which is the standard narrow-body SOIC package. BA4558F-E2 and BA4558RF-E2 use 0.173" width (4.40mm), representing a wider body variant. These are not directly interchangeable on the same PCB layout without design modification. Verify PCB footprint compatibility before substitution.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All substitute parts listed are ROHS3 compliant, matching the compliance status of the original TL082SG-13. This ensures compatibility with environmental and regulatory requirements.
Q: What is the advantage of the extended operating temperature range in ADTL082ARZ?
A: The ADTL082ARZ extends the maximum operating temperature to 125°C compared to 85°C for the TL082SG-13. This provides greater flexibility for applications operating in elevated temperature environments or with thermal margin requirements. Applications limited to the original 85°C maximum temperature range are unaffected by this specification difference.
Q: How do I determine which substitute part is appropriate for my application?
A: Identify the critical electrical parameters required by your application: input bias current, slew rate, gain bandwidth product, supply voltage range, and output current capability. Compare these requirements against the parameter table. For applications requiring low input bias current and high impedance signal handling, select J-FET alternatives (ADTL082ARZ series). For general signal conditioning applications with less stringent input impedance requirements, general purpose alternatives may be acceptable. Verify package compatibility with your PCB layout.
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