TL082ACN Equivalent & Substitute Parts

Part Overview

The TL082ACN is a J-FET input operational amplifier manufactured by STMicroelectronics, configured as a dual-channel (2 circuit) device in an 8-Mini DIP package. This component is classified as obsolete, though 2825 pieces remain in new original stock. The TL082ACN is qualified to AEC-Q100 automotive standards and operates across a supply voltage range of 6V to 36V with an operating temperature range of 0°C to 70°C.

Due to its obsolete product status, identifying equivalent and substitute parts is necessary for ongoing design support, production continuity, and long-term component availability. Substitute parts must maintain functional compatibility through matching amplifier type, circuit count, package form factor, and critical electrical parameters.

Key Parameters

Parameter	Value	Unit
Amplifier Type	J-FET	—
Number of Circuits	2	—
Package / Case	8-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—
Slew Rate	16	V/µs
Gain Bandwidth Product	4	MHz
Current - Input Bias	20	pA
Voltage - Input Offset	3	mV
Current - Supply	1.4	mA
Current - Output / Channel	40	mA
Voltage - Supply Span (Min)	6	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	0 to 70	°C
Grade	Automotive	—
Qualification	AEC-Q100	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the TL082ACN is determined by strict adherence to the following critical parameters:

Primary Compatibility Criteria:

Amplifier Type: J-FET (required for input impedance and noise characteristics)
Number of Circuits: 2 (dual-channel configuration)
Package / Case: 8-DIP (0.300", 7.62mm) (physical and electrical pin compatibility)
Mounting Type: Through Hole (PCB assembly compatibility)

Secondary Electrical Parameters:

Slew Rate: 16 V/µs (TL082ACN baseline)
Gain Bandwidth Product: 4 MHz (TL082ACN baseline)
Voltage Supply Range: Minimum 6V to Maximum 36V (TL082ACN baseline)
Operating Temperature: 0°C to 70°C (TL082ACN baseline)

Substitute parts are grouped into two categories:

Category A - Direct J-FET Substitutes: Parts maintaining J-FET amplifier type with 2 circuits in 8-DIP package. These include AD648JNZ, AD648KNZ, AD712JNZ, AD712KNZ, LF353N/NOPB, and LF412CN/NOPB. These parts preserve the core amplifier topology and are suitable for applications requiring J-FET input characteristics.

Category B - Functional Alternatives: Parts with different amplifier types (General Purpose or Audio) but maintaining 2 circuits in 8-DIP package. These include AD706JNZ, AD827JNZ, LM4562NA/NOPB, and LME49720NA/NOPB. These parts offer enhanced performance in specific parameters but differ in amplifier topology and may require application-level verification.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (mV/µV)	Supply Current (mA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Status
TL082ACN	STMicroelectronics	J-FET	16	4	20	3 mV	1.4	40	6	36	0 to 70	Obsolete
AD648JNZ	Analog Devices	J-FET	1.8	1	5	0.75 µV	0.34	15	9	36	0 to 70	Active
AD648KNZ	Analog Devices	J-FET	1.8	1	3	0.3 µV	0.34	15	9	36	0 to 70	Active
AD706JNZ	Analog Devices	General Purpose	0.15	0.8	50	0.03 µV	0.75	15	4	36	0 to 70	Active
AD712JNZ	Analog Devices	J-FET	20	4	25	0.3 µV	5	25	9	36	0 to 70	Active
AD712KNZ	Analog Devices	J-FET	20	4	25	0.3 µV	5	25	9	36	0 to 70	Active
AD827JNZ	Analog Devices	General Purpose	300	50	3300	0.3 µV	10	32	9	36	0 to 70	Active
LF353N/NOPB	Texas Instruments	J-FET	13	4	50	5 mV	3.6	15	10	36	0 to 70	Active
LF412CN/NOPB	Texas Instruments	J-FET	15	4	50	1 mV	3.6	—	10	40	0 to 70	Active
LM4562NA/NOPB	Texas Instruments	Audio	20	55	10	0.1 µV	10	26	5	34	-40 to 85	Active
LME49720NA/NOPB	Texas Instruments	Audio	20	55	10	0.1 µV	10	26	5	34	-40 to 85	Active

Engineering Selection Recommendations

For Direct Replacement (J-FET Topology Preservation):

The AD712JNZ and AD712KNZ represent the closest functional equivalents to the TL082ACN. Both maintain J-FET amplifier type, dual-channel configuration, and 8-DIP package. The AD712 series matches the TL082ACN slew rate (20 V/µs vs. 16 V/µs) and gain bandwidth product (4 MHz). Both parts are active products with full AEC-Q100 qualification and ROHS3 compliance. The minimum supply voltage requirement increases from 6V to 9V, which must be verified against application requirements.

The LF412CN/NOPB from Texas Instruments provides an alternative J-FET substitute with slew rate of 15 V/µs and 4 MHz gain bandwidth product, closely matching TL082ACN performance. This part offers extended maximum supply voltage (40V vs. 36V) and superior input offset voltage (1 mV vs. 3 mV). LF412CN/NOPB is active and ROHS3 compliant with 44,180 pieces in stock.

For Performance-Enhanced Applications:

The LM4562NA/NOPB and LME49720NA/NOPB are audio-grade amplifiers offering significantly enhanced performance: 55 MHz gain bandwidth product, 20 V/µs slew rate, and 100 µV input offset voltage. These parts support extended operating temperature range (-40°C to 85°C) and are suitable for applications requiring superior audio fidelity. Both are active products with full compliance certifications.

For Low-Power Applications:

The AD648KNZ provides the lowest input bias current (3 pA) and superior input offset voltage (0.3 µV) among J-FET substitutes. However, this part exhibits reduced slew rate (1.8 V/µs) and gain bandwidth product (1 MHz), making it suitable only for applications where low input bias current is critical and bandwidth requirements are relaxed.

Compliance and Availability:

All substitute parts listed are ROHS3 compliant and REACH unaffected. All maintain 8-DIP (0.300", 7.62mm) through-hole package compatibility. Operating temperature range of 0°C to 70°C is preserved across all J-FET substitutes. Inventory availability ranges from 1,102 to 44,180 pieces across substitute options.

Frequently Asked Questions (FAQ)

Q: Can the AD712JNZ directly replace the TL082ACN without circuit modification?

A: The AD712JNZ maintains identical package, pin count, and functional topology. However, the minimum supply voltage increases from 6V to 9V. Circuits operating below 9V require redesign. All other electrical parameters are compatible or superior.

Q: What is the primary difference between AD648JNZ and AD648KNZ?

A: Both parts are identical except for input bias current (5 pA vs. 3 pA) and input offset voltage (0.75 µV vs. 0.3 µV). The AD648KNZ offers superior precision specifications. Both share identical slew rate, bandwidth, and supply requirements.

Q: Why do LM4562NA/NOPB and LME49720NA/NOPB have different amplifier types than the TL082ACN?

A: These are audio-grade amplifiers rather than J-FET types. They provide enhanced gain bandwidth product (55 MHz vs. 4 MHz) and superior noise performance. They are suitable for audio applications but may introduce different frequency response characteristics in non-audio circuits.

Q: Is the LF353N/NOPB a suitable substitute for the TL082ACN?

A: The LF353N/NOPB maintains J-FET type, dual-channel configuration, and 8-DIP package with 4 MHz gain bandwidth product. However, it requires minimum 10V supply (vs. 6V for TL082ACN) and exhibits higher input bias current (50 pA vs. 20 pA) and input offset voltage (5 mV vs. 3 mV). Suitability depends on application tolerance for these parameter differences.

Q: What is the significance of the minimum supply voltage difference between TL082ACN (6V) and most substitutes (9V or 10V)?

A: The TL082ACN operates at lower supply voltages, enabling use in battery-powered or low-voltage applications. Substitutes with higher minimum supply requirements cannot be used in circuits designed for 6V to 8V operation without redesign. This is a critical compatibility factor.

Q: Are all substitute parts automotive-qualified like the TL082ACN?

A: The TL082ACN carries AEC-Q100 automotive qualification. Substitute parts listed do not explicitly state automotive qualification in the provided specifications. Application in automotive environments requires verification of qualification status with manufacturers.

Q: Can the LF412CN/NOPB be used in place of the TL082ACN in all applications?

A: The LF412CN/NOPB is a strong substitute with matching 4 MHz bandwidth and similar slew rate (15 V/µs vs. 16 V/µs). However, it requires minimum 10V supply and exhibits higher input bias current (50 pA vs. 20 pA). Circuits designed for 6V operation or requiring lower input bias current require alternative substitutes.

Q: What is the impact of different input offset voltages across substitute parts?

A: Input offset voltage determines DC accuracy in precision applications. The TL082ACN specifies 3 mV. Substitutes range from 0.1 µV (LM4562NA/NOPB) to 5 mV (LF353N/NOPB). Lower offset voltage improves DC precision but may not be necessary for AC-coupled or non-precision applications.

Q: Is package compatibility guaranteed across all listed substitutes?

A: All substitute parts maintain 8-DIP (0.300", 7.62mm) through-hole package with identical pin count and configuration. Physical and electrical pin compatibility is preserved. PCB layout modifications are not required for package substitution.

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