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TLE2081ACDR Equivalent & Substitute Parts
Part Overview
The TLE2081ACDR is a J-FET input operational amplifier manufactured by Texas Instruments in the Excalibur™ series. This single-circuit, 8-SOIC surface mount device operates across a wide supply voltage range of 4.5V to 38V and is designed for applications requiring low input bias current and high slew rate performance. The device is Active status and ROHS3 compliant with unlimited moisture sensitivity rating.
Substitute parts are identified when equivalent functional performance can be achieved through alternative manufacturers or package configurations while maintaining critical electrical parameters within acceptable operating ranges.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | J-FET | - |
| Number of Circuits | 1 | - |
| Slew Rate | 45 | V/µs |
| Gain Bandwidth Product | 10 | MHz |
| Current - Input Bias | 20 | pA |
| Voltage - Input Offset | 470 | µV |
| Current - Supply | 1.7 | mA |
| Current - Output / Channel | 48 | mA |
| Voltage - Supply Span (Min) | 4.5 | V |
| Voltage - Supply Span (Max) | 38 | V |
| Operating Temperature | 0 to 70 | °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 TLE2081ACDR is determined by the following critical parameters:
Primary Substitution Criteria:
- Amplifier Type: J-FET input configuration for low input bias current performance
- Number of Circuits: Single circuit requirement
- Slew Rate: Minimum 45V/µs for high-speed signal processing
- Gain Bandwidth Product: Minimum 10 MHz for frequency response
- Supply Voltage Range: Minimum 4.5V to 38V compatibility
- Package Configuration: 8-SOIC surface mount preferred; alternative packages acceptable with form-fit-function equivalence
- Operating Temperature: 0°C to 70°C commercial grade
- Compliance: ROHS3 compliant, MSL 1 rating
Substitution Logic: Substitute parts must maintain J-FET amplifier topology with equivalent or superior electrical performance in slew rate, bandwidth, and input bias current specifications. Parts with lower performance in these critical parameters are not suitable substitutes. Package alternatives are acceptable when mounting type and pin configuration support direct replacement or circuit board redesign.
Parameter Comparison
| Parameter | TLE2081ACDR | AD711JNZ | AD548JRZ-REEL7 | AD548KNZ |
|---|---|---|---|---|
| Manufacturer | Texas Instruments | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. |
| Amplifier Type | J-FET | J-FET | General Purpose | General Purpose |
| Number of Circuits | 1 | 1 | 1 | 1 |
| Slew Rate (V/µs) | 45 | 20 | 1.8 | 1.8 |
| Gain Bandwidth Product (MHz) | 10 | 4 | 1 | 1 |
| Current - Input Bias (pA) | 20 | 15 | 50 | 30 |
| Voltage - Input Offset (µV) | 470 | 300 | 750 | 300 |
| Current - Supply (mA) | 1.7 | 2.5 | 0.17 | 0.17 |
| Current - Output / Channel (mA) | 48 | 25 | 15 | 15 |
| Voltage - Supply Span Min (V) | 4.5 | 9 | 9 | 9 |
| Voltage - Supply Span Max (V) | 38 | 36 | 36 | 36 |
| Operating Temperature (°C) | 0 to 70 | 0 to 70 | 0 to 70 | 0 to 70 |
| Package / Case | 8-SOIC | 8-DIP | 8-SOIC | 8-DIP |
| Mounting Type | Surface Mount | Through Hole | Surface Mount | Through Hole |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
Primary Substitute - AD711JNZ: The AD711JNZ is a J-FET input operational amplifier from Analog Devices Inc. with Active product status and ROHS3 compliance. This device maintains J-FET amplifier topology with slew rate of 20V/µs and gain bandwidth product of 4 MHz. While these parameters are lower than the TLE2081ACDR, the AD711JNZ provides J-FET input characteristics with input bias current of 15 pA and input offset voltage of 300 µV. The device operates across 9V to 36V supply range and 0°C to 70°C temperature range. Package configuration is 8-DIP through-hole, requiring circuit board redesign for direct replacement.
Secondary Substitutes - AD548JRZ-REEL7 and AD548KNZ: The AD548 series devices are general-purpose operational amplifiers with Active product status and ROHS3 compliance. AD548JRZ-REEL7 is available in 8-SOIC surface mount packaging with tape and reel delivery, matching the original package form factor. AD548KNZ provides 8-DIP through-hole configuration. Both variants feature 50 pA input bias current and operate across 9V to 36V supply range with 0°C to 70°C temperature rating. Slew rate of 1.8V/µs and gain bandwidth product of 1 MHz represent significant performance reduction compared to the TLE2081ACDR and are suitable only for low-frequency applications.
Compliance and Certification: All identified substitute parts maintain ROHS3 compliance, MSL 1 moisture sensitivity rating, and Active product status. All parts carry EAR99 ECCN classification and HTSUS code 8542.33.0001, consistent with the original device.
Frequently Asked Questions (FAQ)
Q: Can the AD711JNZ directly replace the TLE2081ACDR in existing circuit boards?
A: The AD711JNZ requires circuit board redesign due to package configuration differences. The TLE2081ACDR uses 8-SOIC surface mount packaging, while the AD711JNZ uses 8-DIP through-hole packaging. Pin configuration and footprint are not compatible for direct board-level substitution without layout modification.
Q: What is the primary performance difference between the TLE2081ACDR and AD548 series substitutes?
A: The TLE2081ACDR provides superior high-frequency performance with 45V/µs slew rate and 10 MHz gain bandwidth product. The AD548 series devices deliver 1.8V/µs slew rate and 1 MHz bandwidth, making them suitable for low-frequency signal conditioning applications only. The TLE2081ACDR is the preferred choice for applications requiring fast transient response and wide bandwidth.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All identified substitute parts—AD711JNZ, AD548JRZ-REEL7, and AD548KNZ—are ROHS3 compliant with MSL 1 moisture sensitivity rating, matching the compliance profile of the TLE2081ACDR.
Q: What supply voltage range limitations exist with substitute parts?
A: The TLE2081ACDR operates from 4.5V to 38V. All identified substitute parts operate from 9V to 36V minimum supply voltage. Applications requiring operation below 9V supply voltage cannot use these substitutes and require alternative component selection.
Q: Which substitute part maintains surface mount packaging?
A: The AD548JRZ-REEL7 is the only identified substitute available in 8-SOIC surface mount packaging with tape and reel delivery. This part provides package form-factor compatibility with the TLE2081ACDR, though electrical performance is reduced for low-frequency applications.
Q: Can substitute parts be used interchangeably in all TLE2081ACDR applications?
A: No. Substitute selection depends on application-specific requirements for slew rate, bandwidth, and supply voltage range. The AD711JNZ is suitable for applications requiring J-FET input characteristics with moderate bandwidth. The AD548 series is limited to low-frequency applications. Circuit validation is required to confirm substitute part suitability for specific application parameters.
Q: What is the input bias current performance of substitute parts?
A: The AD711JNZ provides 15 pA input bias current, superior to the TLE2081ACDR at 20 pA. The AD548 series devices provide 30 to 50 pA input bias current, representing degraded performance. For applications sensitive to input bias current, the AD711JNZ is the preferred substitute.
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