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TLE2161AIDR Equivalent & Substitute Parts
Part Overview
The TLE2161AIDR is a J-FET operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device is classified as a single-circuit J-FET amplifier with a gain bandwidth product of 6.4 MHz and operates across a supply voltage range of 7 V to 36 V. The TLE2161AIDR is designated as Last Time Buy, indicating that the original manufacturer has discontinued or will discontinue production. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications currently utilizing this component.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | J-FET | — |
| Number of Circuits | 1 | — |
| Slew Rate | 10 | V/µs |
| Gain Bandwidth Product | 6.4 | MHz |
| Current - Input Bias | 4 | pA |
| Voltage - Input Offset | 500 | µV |
| Current - Supply | 290 | µA |
| Current - Output / Channel | 80 | mA |
| Voltage - Supply Span (Min) | 7 | V |
| Voltage - Supply Span (Max) | 36 | V |
| Operating Temperature | −40 to 85 | °C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the TLE2161AIDR is determined by alignment across the following critical parameters: amplifier type (J-FET), number of circuits (1), package format (8-SOIC surface mount), supply voltage range compatibility, and operating temperature range. Substitute parts must maintain functional equivalence in slew rate, gain bandwidth product, input bias current, input offset voltage, and output current capability to ensure circuit performance is preserved.
The substitute parts identified fall into two primary categories:
Category 1: J-FET Amplifiers in 8-SOIC Package — Parts that maintain the same amplifier topology and package format as the TLE2161AIDR. These include AD711JRZ variants (Analog Devices), ADA4000-1ARZ variants (Analog Devices), and LT1055S8 (Analog Devices). These substitutes preserve the J-FET input stage characteristics and are housed in the identical 8-SOIC package, enabling direct or near-direct board-level replacement.
Category 2: General Purpose Amplifiers with Alternative Topologies — Parts that offer functional substitution through different amplifier architectures. The OPA991IDBVR (Texas Instruments) is a general-purpose, rail-to-rail amplifier in SOT-23-5 package, and the HA9P5127 variants (Renesas Electronics) are general-purpose amplifiers in 8-SOIC package. These parts require circuit evaluation and potential layout modifications due to package differences or performance characteristic variations.
Parameter Comparison
| Parameter | TLE2161AIDR | AD711JRZ-REEL7 | ADA4000-1ARZ | ADA4000-1ARZ-R7 | ADA4000-1ARZ-RL | LT1055S8 | OPA991IDBVR | HA9P5127-5Z | HA9P5127-5ZX96 |
|---|---|---|---|---|---|---|---|---|---|
| Amplifier Type | J-FET | J-FET | J-FET | J-FET | J-FET | J-FET | General Purpose | General Purpose | General Purpose |
| Number of Circuits | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Slew Rate (V/µs) | 10 | 20 | 20 | 20 | 20 | 12 | 21 | 10 | 10 |
| Gain Bandwidth Product (MHz) | 6.4 | 4 | 5 | 5 | 5 | 4.5 | 4.5 | 8.5 | 8.5 |
| Current - Input Bias (pA) | 4 | 15 | 5 | 5 | 5 | 30 | 10 | 15000 | 15000 |
| Voltage - Input Offset (µV) | 500 | 300 | 200 | 200 | 200 | 500 | 125 | 30 | 30 |
| Current - Supply (µA or mA) | 290 µA | 2.5 mA | 1.35 mA | 1.35 mA | 1.35 mA | 2.8 mA | 560 µA | 3.5 mA | 3.5 mA |
| Current - Output / Channel (mA) | 80 | 25 | 28 | 28 | 28 | — | 75 | 25 | 25 |
| Voltage - Supply Span Min (V) | 7 | 9 | 8 | 8 | 8 | 10 | 2.7 | 10 | 10 |
| Voltage - Supply Span Max (V) | 36 | 36 | 36 | 36 | 36 | 36 | 40 | 30 | 30 |
| Operating Temperature (°C) | −40 to 85 | 0 to 70 | −40 to 125 | −40 to 125 | −40 to 125 | 0 to 70 | −40 to 125 | 0 to 75 | 0 to 75 |
| Package / Case | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | SOT-23-5 | 8-SOIC | 8-SOIC |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
Primary Substitutes (J-FET Topology, 8-SOIC Package)
The ADA4000-1ARZ, ADA4000-1ARZ-R7, and ADA4000-1ARZ-RL represent the closest functional equivalents to the TLE2161AIDR. All three variants share identical electrical specifications and differ only in packaging format (Tube, Cut Tape & Digi-Reel, and Tape & Reel respectively). These parts maintain J-FET input stage architecture, operate across the full 8 V to 36 V supply range, and are rated for extended operating temperatures (−40°C to 125°C), exceeding the TLE2161AIDR's upper temperature limit. Input bias current is superior at 5 pA compared to 4 pA, and input offset voltage is improved at 200 µV versus 500 µV. These parts are classified as Active products with full RoHS3 compliance and MSL 1 rating.
The AD711JRZ-REEL7 (Analog Devices) is a J-FET amplifier in 8-SOIC package with Active product status. This part exhibits higher slew rate (20 V/µs) and lower input offset voltage (300 µV) than the TLE2161AIDR. However, the minimum supply voltage requirement is 9 V, which exceeds the TLE2161AIDR's 7 V minimum. Operating temperature range is limited to 0°C to 70°C. This part is suitable for applications where the higher minimum supply voltage and narrower temperature range are acceptable.
The LT1055S8 (Analog Devices) is a J-FET amplifier in 8-SOIC package with Active product status. Slew rate is 12 V/µs, and gain bandwidth product is 4.5 MHz. Minimum supply voltage is 10 V, which restricts use in applications requiring operation below this threshold. Operating temperature range is 0°C to 70°C. This part is appropriate for designs with higher supply voltage headroom and standard industrial temperature requirements.
Secondary Substitutes (Alternative Topologies)
The OPA991IDBVR (Texas Instruments) is a general-purpose, rail-to-rail amplifier in SOT-23-5 package with Active product status. This part offers superior slew rate (21 V/µs), lower input offset voltage (125 µV), and extended operating temperature range (−40°C to 125°C). However, the package format differs from the TLE2161AIDR (SOT-23-5 versus 8-SOIC), requiring circuit board redesign and layout modification. The minimum supply voltage is 2.7 V, providing greater flexibility for low-voltage applications. This substitute is applicable only when board-level redesign is feasible.
The HA9P5127-5Z and HA9P5127-5ZX96 (Renesas Electronics) are general-purpose amplifiers in 8-SOIC package with Active product status. Both variants share identical electrical specifications and differ only in packaging format (Tube and Tape & Reel respectively). These parts maintain the 8-SOIC package format, enabling direct board replacement. However, the amplifier topology is general-purpose rather than J-FET, and input bias current is significantly higher at 15 nanoamperes (15,000 pA) compared to 4 pA in the TLE2161AIDR. Maximum supply voltage is limited to 30 V, which restricts use in applications requiring operation above this level. Operating temperature range is 0°C to 75°C. These parts are suitable for applications where the higher input bias current and lower maximum supply voltage are acceptable.
Compliance and Certification
All identified substitute parts are RoHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the TLE2161AIDR's environmental compliance profile. All parts are classified under ECCN EAR99 and HTSUS 8542.33.0001, consistent with the original part's export and tariff classification.
Frequently Asked Questions (FAQ)
Q: Can the ADA4000-1ARZ be used as a direct replacement for the TLE2161AIDR?
A: The ADA4000-1ARZ is functionally equivalent in terms of package format (8-SOIC), amplifier topology (J-FET), and circuit count (1). Both parts operate across overlapping supply voltage ranges (8 V to 36 V for ADA4000-1ARZ versus 7 V to 36 V for TLE2161AIDR). The ADA4000-1ARZ exhibits superior input bias current (5 pA versus 4 pA) and input offset voltage (200 µV versus 500 µV). The primary difference is the extended operating temperature range of the ADA4000-1ARZ (−40°C to 125°C versus −40°C to 85°C). Direct board-level replacement is possible; however, applications requiring operation below 8 V supply voltage require evaluation of the minimum supply voltage specification.
Q: What is the key difference between the AD711JRZ-REEL7 and the ADA4000-1ARZ?
A: Both parts are J-FET amplifiers in 8-SOIC package with Active product status. The AD711JRZ-REEL7 has a higher slew rate (20 V/µs versus 20 V/µs for ADA4000-1ARZ) and lower input offset voltage (300 µV versus 200 µV). However, the AD711JRZ-REEL7 has a minimum supply voltage of 9 V compared to 8 V for the ADA4000-1ARZ, and a narrower operating temperature range (0°C to 70°C versus −40°C to 125°C). Selection between these parts depends on specific application requirements for supply voltage range and operating temperature.
Q: Why is the OPA991IDBVR listed as a substitute if it uses a different package?
A: The OPA991IDBVR is included as a substitute option for applications where circuit board redesign is feasible or planned. While the package format differs (SOT-23-5 versus 8-SOIC), the OPA991IDBVR offers superior electrical performance in several parameters: slew rate of 21 V/µs, input offset voltage of 125 µV, and extended operating temperature range (−40°C to 125°C). The rail-to-rail output capability and lower minimum supply voltage (2.7 V) provide additional design flexibility. This substitute is applicable only when board-level layout modification is acceptable.
Q: Can the HA9P5127-5Z be used in applications requiring very low input bias current?
A: No. The HA9P5127-5Z has an input bias current of 15 nanoamperes (15,000 pA), which is approximately 3,750 times higher than the TLE2161AIDR's 4 pA specification. Applications requiring ultra-low input bias current, such as high-impedance signal conditioning or precision charge amplification, must use J-FET input amplifiers such as the ADA4000-1ARZ or AD711JRZ-REEL7. The HA9P5127-5Z is suitable only for general-purpose applications where input bias current is not a critical design parameter.
Q: What is the significance of the packaging variants (Tube, Cut Tape & Digi-Reel, Tape & Reel) for substitute parts?
A: Packaging variants affect supply chain logistics and component handling but do not alter electrical specifications or functional performance. The ADA4000-1ARZ (Tube), ADA4000-1ARZ-R7 (Cut Tape & Digi-Reel), and ADA4000-1ARZ-RL (Tape & Reel) are electrically identical. Selection of packaging variant depends on manufacturing process requirements: Tube packaging is suitable for manual assembly or small-volume production; Cut Tape & Digi-Reel format accommodates both manual and automated pick-and-place equipment; Tape & Reel format is optimized for high-volume automated assembly. All three variants carry identical RoHS3 compliance and MSL 1 ratings.
Q: Is the LT1055S8 suitable for applications operating at 7 V supply voltage?
A: No. The LT1055S8 has a minimum supply voltage specification of 10 V, which exceeds the 7 V minimum requirement of the TLE2161AIDR. Applications requiring operation at 7 V supply voltage must use substitutes with lower minimum supply voltage specifications, such as the ADA4000-1ARZ (8 V minimum) or OPA991IDBVR (2.7 V minimum). The LT1055S8 is applicable only for designs with supply voltage of 10 V or higher.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All identified substitute parts—AD711JRZ-REEL7, ADA4000-1ARZ variants, LT1055S8, OPA991IDBVR, and HA9P5127 variants—are RoHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the TLE2161AIDR's environmental compliance profile. All parts are classified under ECCN EAR99 and HTSUS 8542.33.0001.
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