TLE2071IDG4 Equivalent & Substitute Parts

Part Overview

The TLE2071IDG4 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 operates across a wide supply voltage range of 4.5V to 38V. The TLE2071IDG4 is designated as Last Time Buy, indicating discontinued production status. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain component availability for ongoing production and field support applications.

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	-40 to 85	°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

Substitute parts for the TLE2071IDG4 are classified into two functional categories based on electrical and mechanical compatibility:

Category 1: Direct Texas Instruments Equivalents Parts TLE2071ID and TLE2071IDR are direct equivalents from the same manufacturer and base product series. These parts maintain identical electrical specifications including J-FET amplifier type, 10 MHz gain bandwidth product, 45V/µs slew rate, 20 pA input bias current, and 4.5V to 38V supply voltage range. The primary difference is packaging format (Tube versus Tape & Reel) and product status (Last Time Buy versus Active). TLE2071IDR is recommended as the primary active substitute due to its Active product status and higher inventory availability (2800 pcs).

Category 2: Cross-Manufacturer J-FET Alternatives Parts OP42GSZ, OP42GSZ-R7, and OP42GSZ-RL are J-FET amplifiers from Analog Devices Inc. These maintain the same amplifier type classification and 8-SOIC package footprint. However, they exhibit different electrical characteristics: 50V/µs slew rate (versus 45V/µs), 10 MHz gain bandwidth product (matching), 130 pA input bias current (versus 20 pA), and 1.5 mV input offset voltage (versus 490 µV). Supply voltage range differs at 16V to 40V minimum-maximum (versus 4.5V to 38V). These parts are suitable only for applications where the higher input bias current and offset voltage are acceptable.

Category 3: General Purpose Amplifier Alternatives Parts AD847ARZ and AD847ARZ-REEL are general purpose amplifiers from Analog Devices Inc. in 8-SOIC packages. These represent functional alternatives with significantly different electrical performance: 300V/µs slew rate, 50 MHz gain bandwidth product, 3.3 µA input bias current, and 9V to 36V supply voltage range. These parts are suitable only for applications where higher bandwidth and slew rate are beneficial and where the higher input bias current does not compromise circuit performance.

Category 4: Low-Power General Purpose Alternatives Parts LT1008S8#PBF and LT1008S8#TRPBF are low-power general purpose amplifiers from Analog Devices Inc. in 8-SOIC packages. These feature significantly reduced supply current (380 µA versus 1.7 mA), lower slew rate (0.2V/µs), and narrower operating temperature range (0°C to 70°C versus -40°C to 85°C). These parts are suitable only for low-power applications where the reduced bandwidth and temperature range are acceptable.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (µV)	Supply Current (mA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	Product Status
TLE2071IDG4	Texas Instruments	J-FET	45	10	20	490	1.7	48	4.5	38	-40 to 85	8-SOIC	Last Time Buy
TLE2071ID	Texas Instruments	J-FET	45	10	20	490	1.7	48	4.5	38	-40 to 85	8-SOIC	Last Time Buy
TLE2071IDR	Texas Instruments	J-FET	45	10	20	490	1.7	48	4.5	38	-40 to 85	8-SOIC	Active
OP42GSZ	Analog Devices Inc.	J-FET	50	10	130	1500	5.1	33	16	40	-40 to 85	8-SOIC	Active
OP42GSZ-R7	Analog Devices Inc.	J-FET	50	10	130	1500	5.1	33	16	40	-40 to 85	8-SOIC	Active
OP42GSZ-RL	Analog Devices Inc.	J-FET	50	10	130	1500	5.1	33	16	40	-40 to 85	8-SOIC	Active
AD847ARZ	Analog Devices Inc.	General Purpose	300	50	3300	500	5.3	32	9	36	-40 to 85	8-SOIC	Active
AD847ARZ-REEL	Analog Devices Inc.	General Purpose	300	50	3300	500	5.3	32	9	36	-40 to 85	8-SOIC	Active
LT1008S8#PBF	Analog Devices Inc.	General Purpose	0.2	—	100	30	0.38	—	4	36	0 to 70	8-SOIC	Active
LT1008S8#TRPBF	Analog Devices Inc.	General Purpose	0.2	—	100	30	0.38	—	4	36	0 to 70	8-SOIC	Active

Engineering Selection Recommendations

Primary Recommendation: TLE2071IDR TLE2071IDR is the recommended substitute for TLE2071IDG4. This part maintains 100% electrical equivalence across all specified parameters including J-FET amplifier type, 45V/µs slew rate, 10 MHz gain bandwidth product, 20 pA input bias current, 490 µV input offset voltage, and 4.5V to 38V supply voltage range. TLE2071IDR holds Active product status with 2800 pcs inventory availability, ensuring long-term supply continuity. Both parts are ROHS3 Compliant, MSL Level 1, and REACH Unaffected. The 8-SOIC package footprint is identical, enabling direct PCB substitution without layout modification.

Secondary Recommendation: TLE2071ID TLE2071ID provides identical electrical specifications to TLE2071IDG4 and is available in Tube packaging with 1220 pcs inventory. This part is designated Last Time Buy status, matching the original part classification. TLE2071ID is suitable for applications requiring exact electrical equivalence but should be considered secondary to TLE2071IDR due to discontinued production status.

Alternative for Active Supply: OP42GSZ / OP42GSZ-R7 / OP42GSZ-RL These Analog Devices J-FET amplifiers are suitable alternatives when supply constraints on Texas Instruments parts occur. All three variants maintain J-FET amplifier classification and 8-SOIC package compatibility. Electrical differences include 50V/µs slew rate (5V/µs higher), 130 pA input bias current (110 pA higher), 1.5 mV input offset voltage (1.01 mV higher), and 16V to 40V supply voltage range (4.5V minimum not supported). These parts are Active status with inventory availability (2920, 1237, and 3003 pcs respectively). Selection among the three variants depends on packaging requirement: OP42GSZ (Tube), OP42GSZ-R7 (Tape & Reel), or OP42GSZ-RL (Tape & Reel).

Not Recommended for Direct Substitution: AD847ARZ / AD847ARZ-REEL These general purpose amplifiers differ significantly in electrical performance with 300V/µs slew rate, 50 MHz gain bandwidth product, and 3.3 µA input bias current. These parts are suitable only for applications where higher bandwidth and slew rate provide functional benefit and where the 3000x higher input bias current does not compromise circuit performance. Supply voltage minimum of 9V excludes use in 4.5V to 9V applications.

Not Recommended for Direct Substitution: LT1008S8#PBF / LT1008S8#TRPBF These low-power general purpose amplifiers feature 0.2V/µs slew rate (225x slower), 380 µA supply current (4.5x lower), and 0°C to 70°C operating temperature range (excludes -40°C operation). These parts are suitable only for low-power applications where reduced bandwidth and narrower temperature range are acceptable trade-offs.

Frequently Asked Questions (FAQ)

Q1: Can TLE2071IDR be used as a direct replacement for TLE2071IDG4 without circuit modification?

A: Yes. TLE2071IDR is electrically and mechanically equivalent to TLE2071IDG4. Both parts feature identical J-FET amplifier specifications, 8-SOIC package footprint, and electrical performance parameters. The primary difference is product status (Active versus Last Time Buy) and packaging format. Direct PCB substitution is possible without design changes.

Q2: What is the key difference between TLE2071ID and TLE2071IDR?

A: Both parts are electrically identical. The difference is product status and packaging: TLE2071ID is Last Time Buy in Tube packaging with 1220 pcs inventory, while TLE2071IDR is Active status with 2800 pcs inventory. For new designs and long-term supply, TLE2071IDR is preferred.

Q3: Can OP42GSZ replace TLE2071IDG4 in all applications?

A: OP42GSZ is not a direct replacement. While both are J-FET amplifiers in 8-SOIC packages, OP42GSZ has higher input bias current (130 pA versus 20 pA), higher input offset voltage (1.5 mV versus 490 µV), higher supply current (5.1 mA versus 1.7 mA), and different supply voltage range (16V to 40V versus 4.5V to 38V). OP42GSZ is suitable only for applications where these differences are acceptable and where the minimum 16V supply voltage requirement is met.

Q4: Why is AD847ARZ not recommended as a substitute?

A: AD847ARZ is a general purpose amplifier with significantly different electrical characteristics: 300V/µs slew rate (versus 45V/µs), 50 MHz gain bandwidth product (versus 10 MHz), and 3.3 µA input bias current (versus 20 pA). Additionally, the 9V minimum supply voltage excludes applications requiring 4.5V to 9V operation. AD847ARZ is suitable only for high-bandwidth applications where these performance differences provide functional benefit.

Q5: What is the operating temperature range difference between TLE2071IDG4 and LT1008S8#PBF?

A: TLE2071IDG4 operates from -40°C to 85°C, while LT1008S8#PBF operates from 0°C to 70°C. LT1008S8#PBF cannot be used in applications requiring operation below 0°C or above 70°C. This temperature range limitation makes LT1008S8#PBF unsuitable for most industrial and automotive applications.

Q6: Are all substitute parts ROHS3 Compliant?

A: Yes. All substitute parts listed (TLE2071ID, TLE2071IDR, OP42GSZ, OP42GSZ-R7, OP42GSZ-RL, AD847ARZ, AD847ARZ-REEL, LT1008S8#PBF, LT1008S8#TRPBF) are ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited) and REACH Unaffected status, matching the original TLE2071IDG4 compliance profile.

Q7: What packaging options are available for TLE2071 series substitutes?

A: TLE2071ID is available in Tube packaging. TLE2071IDR is available in standard packaging (Tape & Reel format). Both maintain the 8-SOIC (0.154", 3.90mm Width) footprint. Packaging selection depends on manufacturing process requirements (tube for manual assembly, tape & reel for automated pick-and-place).

Q8: Which substitute has the highest inventory availability?

A: OP42GSZ-RL has the highest inventory with 3003 pcs available. TLE2071IDR has 2800 pcs, OP42GSZ has 2920 pcs, and AD847ARZ-REEL has 2100 pcs. For immediate availability of Texas Instruments equivalents, TLE2071IDR is recommended with 2800 pcs in stock.

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