TLE2071CDG4 Equivalent & Substitute Parts

Part Overview

The TLE2071CDG4 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 Last Time Buy status. The TLE2071CDG4 operates across a wide supply voltage range of 4.5 V to 38 V with low input bias current of 20 pA and moderate slew rate of 45 V/µs, making it suitable for precision analog signal conditioning applications.

Due to Last Time Buy status, identifying equivalent and substitute parts with compatible electrical and mechanical parameters is essential for design continuity and long-term component availability.

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	490	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	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TLE2071CDG4 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 (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Number of Circuits: Single circuit configuration
Supply Voltage Range: Minimum 4.5 V, Maximum 38 V
Slew Rate: 45 V/µs or higher
Gain Bandwidth Product: 10 MHz or higher
Input Bias Current: 20 pA or lower
RoHS3 Compliance and MSL Level 1

Substitute parts are grouped into two categories:

Category 1: Texas Instruments J-FET Amplifiers (Direct Series Match)

TLE2071IDR: Active status, extended operating temperature range (-40°C to 85°C), identical electrical specifications

Category 2: Analog Devices J-FET Amplifiers (Functional Equivalents)

OP42GSZ, OP42GSZ-R7, OP42GSZ-RL: J-FET input amplifiers with 50 V/µs slew rate, 10 MHz bandwidth, compatible supply range (16 V to 40 V minimum), extended temperature range

Category 3: General Purpose Amplifiers (Limited Compatibility)

AD847ARZ, AD847ARZ-REEL: General Purpose amplifiers with higher slew rate (300 V/µs) and bandwidth (50 MHz), but higher input bias current (3.3 µA) and higher minimum supply voltage (9 V)
LT1008S8#PBF, LT1008S8#TRPBF: General Purpose amplifiers with lower slew rate (0.2 V/µs) and lower supply current (380 µA), but significantly reduced bandwidth and slew rate performance

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	Gain Bandwidth (MHz)	Input Bias (pA)	Input Offset (µV)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	Status
TLE2071CDG4	Texas Instruments	J-FET	45	10	20	490	4.5	38	0 to 70	8-SOIC	Last Time Buy
TLE2071IDR	Texas Instruments	J-FET	45	10	20	490	4.5	38	-40 to 85	8-SOIC	Active
OP42GSZ	Analog Devices	J-FET	50	10	130	1500	16	40	-40 to 85	8-SOIC	Active
OP42GSZ-R7	Analog Devices	J-FET	50	10	130	1500	16	40	-40 to 85	8-SOIC	Active
OP42GSZ-RL	Analog Devices	J-FET	50	10	130	1500	16	40	-40 to 85	8-SOIC	Active
AD847ARZ	Analog Devices	General Purpose	300	50	3300	500	9	36	-40 to 85	8-SOIC	Active
AD847ARZ-REEL	Analog Devices	General Purpose	300	50	3300	500	9	36	-40 to 85	8-SOIC	Active
LT1008S8#PBF	Analog Devices	General Purpose	0.2	—	100	30	4	36	0 to 70	8-SOIC	Active
LT1008S8#TRPBF	Analog Devices	General Purpose	0.2	—	100	30	4	36	0 to 70	8-SOIC	Active

Engineering Selection Recommendations

Primary Recommendation: TLE2071IDR

The TLE2071IDR is the optimal substitute for the TLE2071CDG4. Both devices are manufactured by Texas Instruments within the same Excalibur™ series and share identical electrical specifications: 45 V/µs slew rate, 10 MHz gain bandwidth product, 20 pA input bias current, and 490 µV input offset voltage. The TLE2071IDR maintains the same 8-SOIC package and surface mount configuration. The key advantage is Active product status with extended operating temperature range (-40°C to 85°C) compared to the Last Time Buy TLE2071CDG4 (0°C to 70°C). Both devices are ROHS3 compliant with MSL Level 1 rating.

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

The OP42 series (Analog Devices) represents functional J-FET amplifier equivalents. These devices maintain J-FET input architecture with identical 10 MHz gain bandwidth product and 8-SOIC packaging. The OP42 series offers slightly higher slew rate (50 V/µs versus 45 V/µs) and extended temperature range (-40°C to 85°C). However, input bias current is higher at 130 pA (versus 20 pA), and input offset voltage is significantly higher at 1.5 mV (versus 490 µV). The minimum supply voltage requirement is 16 V (versus 4.5 V for TLE2071CDG4). These devices are suitable only when the application can tolerate higher input bias current and offset voltage specifications. All three variants (OP42GSZ, OP42GSZ-R7, OP42GSZ-RL) are Active status with ROHS3 compliance.

Not Recommended: AD847ARZ, AD847ARZ-REEL, LT1008S8#PBF, LT1008S8#TRPBF

The AD847ARZ series are General Purpose amplifiers with fundamentally different electrical characteristics: 300 V/µs slew rate, 50 MHz bandwidth, and 3.3 µA input bias current. These specifications exceed the TLE2071CDG4 performance envelope and are not suitable for applications requiring J-FET input characteristics. The LT1008S8 series exhibits severely degraded performance with 0.2 V/µs slew rate and no specified gain bandwidth product, making these unsuitable for the TLE2071CDG4 application profile.

Frequently Asked Questions (FAQ)

Q1: Can the TLE2071IDR directly replace the TLE2071CDG4 in all applications?

The TLE2071IDR is electrically and mechanically identical to the TLE2071CDG4 with the exception of operating temperature range. The TLE2071IDR supports -40°C to 85°C versus 0°C to 70°C for the TLE2071CDG4. For applications operating within 0°C to 70°C, the TLE2071IDR is a direct replacement. For applications requiring operation below 0°C or above 70°C, the TLE2071IDR provides extended capability. Both devices use identical 8-SOIC packaging and surface mount configuration.

Q2: What are the key differences between the TLE2071CDG4 and OP42GSZ series?

Both are J-FET input amplifiers in 8-SOIC packages with 10 MHz gain bandwidth product. The TLE2071CDG4 offers lower input bias current (20 pA versus 130 pA) and lower input offset voltage (490 µV versus 1.5 mV). The TLE2071CDG4 supports lower minimum supply voltage (4.5 V versus 16 V). The OP42GSZ series provides higher slew rate (50 V/µs versus 45 V/µs) and extended temperature range. Selection depends on whether the application requires ultra-low input bias current and wide supply voltage range (TLE2071CDG4) or can tolerate higher input bias current with higher minimum supply voltage (OP42GSZ).

Q3: Why are AD847ARZ and LT1008S8 not suitable substitutes?

The AD847ARZ is a General Purpose amplifier with 3.3 µA input bias current, which is 165 times higher than the TLE2071CDG4 (20 pA). This fundamental difference in input stage architecture makes it unsuitable for applications requiring J-FET input characteristics. The LT1008S8 exhibits 0.2 V/µs slew rate, which is 225 times slower than the TLE2071CDG4 (45 V/µs), making it unsuitable for dynamic signal applications. These parts are listed in the provided substitute list but do not meet the electrical parameter requirements for functional equivalence.

Q4: Are packaging variants (Tube, Tape & Reel) interchangeable?

Yes, Tube and Tape & Reel packaging variants of the same part number (such as OP42GSZ, OP42GSZ-R7, OP42GSZ-RL) contain identical die and electrical specifications. The packaging difference affects only handling, storage, and automated assembly compatibility. The electrical performance and mechanical fit in 8-SOIC footprints are identical. Selection between packaging variants depends on manufacturing process requirements and inventory management practices.

Q5: What compliance certifications apply to all substitute parts?

All listed substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the TLE2071CDG4 specifications. REACH status is Unaffected for all parts. ECCN classification is EAR99 for all parts. These certifications ensure regulatory compliance across industrial, commercial, and consumer applications.

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