TLE2071CD Equivalent & Substitute Parts

Part Overview

The TLE2071CD is a J-FET input operational amplifier manufactured by Texas Instruments in the Excalibur™ series. This device integrates one amplifier circuit in an 8-SOIC surface mount package and is classified as a Last Time Buy product. The TLE2071CD operates across a wide supply voltage range (4.5V to 38V) with low input bias current (20 pA) and moderate slew rate (45V/µs), making it suitable for precision signal conditioning and low-noise applications. Due to its Last Time Buy status, identifying equivalent and substitute parts is essential for design continuity and long-term component availability.

Substiute Parts

TLE2071CD

Texas InstrumentsIn Stock: 772TLE2071CD Datasheet

Current PartRFQ

TLE2071IDR

Texas InstrumentsIn Stock: 2886TLE2071IDR Datasheet

MFR RecommendedRFQ

AD847ARZ

Analog Devices Inc.In Stock: 1760AD847ARZ Datasheet

MFR RecommendedRFQ

AD847ARZ-REEL

Analog Devices Inc.In Stock: 2121AD847ARZ-REEL Datasheet

MFR RecommendedRFQ

LT1008S8#PBF

Analog Devices Inc.In Stock: 1268LT1008S8#PBF Datasheet

MFR RecommendedRFQ

LT1008S8#TRPBF

Analog Devices Inc.In Stock: 1946LT1008S8#TRPBF Datasheet

MFR RecommendedRFQ

OP42GSZ

Analog Devices Inc.In Stock: 3012OP42GSZ Datasheet

MFR RecommendedRFQ

OP42GSZ-R7

Analog Devices Inc.In Stock: 1266OP42GSZ-R7 Datasheet

MFR RecommendedRFQ

OP42GSZ-RL

Analog Devices Inc.In Stock: 3027OP42GSZ-RL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLE2071CD is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:

Critical Parameters for Substitution:

• Amplifier Type (J-FET input architecture)
• Package / Case (8-SOIC form factor)
• Slew Rate (45V/µs minimum)
• Gain Bandwidth Product (10 MHz minimum)
• Input Bias Current (20 pA maximum)
• Supply Voltage Range (minimum 4.5V, maximum 38V)
• Output Current per Channel (48 mA minimum)

Substitute Categories:

Category 1: Direct Texas Instruments Equivalent The TLE2071IDR is the active production variant of the TLE2071 base product. It maintains identical electrical specifications to the TLE2071CD while offering an extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) and Active product status. This part is fully compatible for direct substitution with enhanced temperature performance.

Category 2: J-FET Amplifiers with Compatible Parameters The OP42GSZ, OP42GSZ-R7, and OP42GSZ-RL are J-FET input amplifiers manufactured by Analog Devices Inc. These parts meet the core J-FET architecture requirement and 8-SOIC packaging. However, they exhibit higher input bias current (130 pA versus 20 pA) and higher input offset voltage (1.5 mV versus 490 µV), with a higher minimum supply voltage requirement (16V versus 4.5V). These differences restrict their use to applications where the TLE2071CD's superior input characteristics are not required.

Category 3: General Purpose Amplifiers The AD847ARZ and AD847ARZ-REEL are general purpose amplifiers with significantly different electrical characteristics. These parts feature higher slew rate (300V/µs), higher gain bandwidth product (50 MHz), and higher input bias current (3.3 µA). They are suitable only for applications where J-FET input characteristics are not essential and higher speed performance is beneficial.

Category 4: Low-Power General Purpose Amplifiers The LT1008S8#PBF and LT1008S8#TRPBF are general purpose amplifiers with substantially lower slew rate (0.2V/µs) and lower supply current (380µA). These parts are appropriate only for ultra-low-power applications where the TLE2071CD's performance specifications exceed application requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: TLE2071IDR

The TLE2071IDR is the recommended substitute for the TLE2071CD. This part is manufactured by Texas Instruments and maintains identical electrical specifications across all critical parameters: J-FET input architecture, 45V/µs slew rate, 10 MHz gain bandwidth product, 20 pA input bias current, and 8-SOIC packaging. The TLE2071IDR offers superior product status (Active versus Last Time Buy) and extended operating temperature range (-40°C to 85°C), providing enhanced design flexibility for temperature-sensitive applications. Both parts are ROHS3 Compliant with MSL 1 rating. Current inventory of TLE2071IDR (2800 Pcs) exceeds TLE2071CD availability (735 Pcs), ensuring long-term supply continuity.

Secondary Recommendation: OP42GSZ, OP42GSZ-R7, OP42GSZ-RL

These Analog Devices J-FET amplifiers are suitable substitutes when the TLE2071CD's ultra-low input bias current (20 pA) is not a design requirement. The OP42 series maintains J-FET input architecture and 8-SOIC packaging with comparable slew rate (50V/µs versus 45V/µs) and gain bandwidth product (10 MHz). However, input bias current is 130 pA (6.5× higher) and input offset voltage is 1.5 mV (3× higher). The minimum supply voltage requirement is 16V, restricting use in low-voltage applications. All three variants (OP42GSZ, OP42GSZ-R7, OP42GSZ-RL) are Active products with extended temperature range (-40°C to 85°C) and ROHS3 compliance. Total combined inventory exceeds 7100 Pcs.

Tertiary Recommendation: AD847ARZ, AD847ARZ-REEL

These general purpose amplifiers are appropriate only for applications where J-FET input characteristics are not essential. The AD847 series offers significantly higher performance in slew rate (300V/µs) and gain bandwidth product (50 MHz), suitable for high-speed signal processing. However, input bias current is 3.3 µA (165× higher than TLE2071CD) and minimum supply voltage is 9V. These parts are Active products with extended temperature range and ROHS3 compliance. Use is limited to applications where the TLE2071CD's low input bias current advantage is not required.

Not Recommended: LT1008S8#PBF, LT1008S8#TRPBF

The LT1008 series exhibits substantially lower slew rate (0.2V/µs) and lower supply current (380µA), making these parts unsuitable for applications requiring the TLE2071CD's 45V/µs slew rate performance. These parts are appropriate only for ultra-low-power, low-speed applications where performance specifications are fundamentally different from the TLE2071CD design envelope.

Frequently Asked Questions (FAQ)

Q1: Can the TLE2071IDR directly replace the TLE2071CD without circuit modification?

A: Yes. The TLE2071IDR maintains identical electrical specifications for all critical parameters: amplifier type (J-FET), slew rate (45V/µs), gain bandwidth product (10 MHz), input bias current (20 pA), input offset voltage (490 µV), supply current (1.7 mA), output current (48 mA), and supply voltage range (4.5V to 38V). Both parts use 8-SOIC packaging. The only difference is extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) and Active product status. No circuit modifications are required.

Q2: What are the key differences between the TLE2071CD and OP42GSZ series?

A: Both are J-FET input amplifiers in 8-SOIC packages with 10 MHz gain bandwidth product. However, the OP42GSZ series has higher input bias current (130 pA versus 20 pA), higher input offset voltage (1.5 mV versus 490 µV), higher slew rate (50V/µs versus 45V/µs), higher supply current (5.1 mA versus 1.7 mA), and higher minimum supply voltage (16V versus 4.5V). The OP42GSZ is suitable only when the TLE2071CD's superior input characteristics are not required.

Q3: Why is the AD847ARZ not recommended as a direct substitute?

A: The AD847ARZ is a general purpose amplifier, not a J-FET input amplifier. It exhibits input bias current of 3.3 µA (165× higher than TLE2071CD), making it unsuitable for applications requiring low input bias current. Additionally, minimum supply voltage is 9V versus 4.5V for the TLE2071CD. The AD847ARZ is appropriate only for high-speed applications where J-FET input characteristics are not essential.

Q4: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (TLE2071IDR, OP42GSZ series, AD847ARZ series, LT1008S8 series) are ROHS3 Compliant with MSL 1 (Unlimited) moisture sensitivity rating. All parts are suitable for standard PCB assembly processes without special handling requirements.

Q5: What is the significance of the TLE2071CD's Last Time Buy status?

A: Last Time Buy status indicates that Texas Instruments will discontinue production of the TLE2071CD. Existing inventory (735 Pcs) represents the final available supply. The TLE2071IDR is the active production replacement, with significantly higher inventory (2800 Pcs) and indefinite availability. Designs should transition to TLE2071IDR for long-term component supply assurance.

Q6: Can the LT1008S8 series substitute for the TLE2071CD in high-speed applications?

A: No. The LT1008S8 series exhibits slew rate of only 0.2V/µs, compared to 45V/µs for the TLE2071CD. This 225× reduction in slew rate makes the LT1008S8 unsuitable for applications requiring the TLE2071CD's speed performance. The LT1008S8 is appropriate only for ultra-low-power, low-speed applications where performance requirements are fundamentally different.

Q7: What packaging options are available for substitute parts?

A: All substitute parts use 8-SOIC (0.154", 3.90mm Width) surface mount packaging, identical to the TLE2071CD. Packaging variants differ only in tape & reel versus tube presentation: TLE2071IDR (standard), OP42GSZ (tube), OP42GSZ-R7 (tape & reel), OP42GSZ-RL (tape & reel), AD847ARZ (tube), AD847ARZ-REEL (tape & reel), LT1008S8#PBF (tube), LT1008S8#TRPBF (tape & reel). All variants are mechanically and electrically identical within their respective part families.

Q8: What is the operating temperature range difference between TLE2071CD and TLE2071IDR?

A: The TLE2071CD operates from 0°C to 70°C, while the TLE2071IDR operates from -40°C to 85°C. The TLE2071IDR provides 40°C additional low-temperature capability and 15°C additional high-temperature capability. For applications requiring extended temperature operation, the TLE2071IDR is the appropriate choice.