OP482GP Equivalent & Substitute Parts

Part Overview

The OP482GP is a J-FET input operational amplifier manufactured by Analog Devices Inc., configured as a 4-circuit integrated circuit in a 14-DIP through-hole package. This device is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and production requirements. The OP482GP operates across a wide supply voltage range of 9V to 36V with a slew rate of 9V/µs and gain bandwidth product of 4 MHz, making it suitable for precision analog signal processing applications requiring low input bias current (3 pA) and low input offset voltage (200 µV).

Key Parameters

Parameter	Value	Unit
Amplifier Type	J-FET	—
Number of Circuits	4	—
Slew Rate	9	V/µs
Gain Bandwidth Product	4	MHz
Current - Input Bias	3	pA
Voltage - Input Offset	200	µV
Current - Supply (x4 Channels)	210	µA
Current - Output / Channel	10	mA
Voltage - Supply Span (Min)	9	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	-40 to 85	°C
Mounting Type	Through Hole	—
Package / Case	14-DIP (0.300", 7.62mm)	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the OP482GP is determined by alignment of critical electrical and mechanical parameters. The primary substitution criteria are:

Direct Equivalents (Identical Electrical and Mechanical Specifications): Parts that maintain identical amplifier type (J-FET), circuit count (4), slew rate (9V/µs), gain bandwidth product (4 MHz), input bias current (3 pA), input offset voltage (200 µV), supply current (210µA), output current per channel (10 mA), supply voltage range (9V to 36V), operating temperature range (-40°C to 85°C), and package type (14-DIP through-hole) are classified as direct equivalents.

Similar Substitutes (Compatible Electrical Performance with Package Variations): Parts that maintain J-FET amplifier type and 4-circuit configuration with compatible supply voltage ranges and operating temperature ranges but differ in secondary parameters such as slew rate, gain bandwidth product, input bias current, or input offset voltage are classified as similar substitutes. These parts retain the same 14-DIP through-hole package form factor.

Functional Alternatives (Different Amplifier Type or Package): Parts that employ different amplifier topologies (general purpose instead of J-FET) or different package types (surface mount instead of through-hole) are classified as functional alternatives and are suitable only when design constraints permit package or topology changes.

Parameter Comparison

Parameter	OP482GP	OP482GPZ	LF444ACN/NOPB	OPA4131PJ	OPA4137PA	OPA4137P
Manufacturer	Analog Devices Inc.	Analog Devices Inc.	Texas Instruments	Texas Instruments	Texas Instruments	Burr Brown
Amplifier Type	J-FET	J-FET	J-FET	J-FET	J-FET	J-FET
Number of Circuits	4	4	4	4	4	4
Slew Rate (V/µs)	9	9	1	10	3.5	3.5
Gain Bandwidth Product (MHz)	4	4	1	4	1	1
Current - Input Bias (pA)	3	3	10	50	5	5
Voltage - Input Offset (µV)	200	200	2000	1500	1500	1500
Current - Supply (µA)	210	210	600	1500	220	220
Current - Output / Channel (mA)	10	10	14	25	60	60
Voltage - Supply Span Min (V)	9	9	44	9	4.5	4.5
Voltage - Supply Span Max (V)	36	36	44	36	36	36
Operating Temperature (°C)	-40 to 85	-40 to 85	0 to 70	-40 to 85	-40 to 85	-40 to 85
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	14-DIP	14-DIP	14-DIP	14-DIP	14-DIP	14-DIP
Product Status	Obsolete	Active	Active	Last Time Buy	Last Time Buy	Active
RoHS Status	Not Specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not Specified

Engineering Selection Recommendations

Primary Recommendation: OP482GPZ

The OP482GPZ is the direct equivalent of the OP482GP, manufactured by Analog Devices Inc. This part maintains identical electrical specifications including 9V/µs slew rate, 4 MHz gain bandwidth product, 3 pA input bias current, and 200 µV input offset voltage. The OP482GPZ is available in active product status with ROHS3 compliance and is packaged in tube format. The 14-DIP through-hole package is mechanically identical to the original OP482GP, enabling direct board-level substitution without design modification. Current inventory of 1372 pieces supports production requirements.

Secondary Recommendation: OPA4131PJ

The OPA4131PJ, manufactured by Texas Instruments, is a J-FET 4-circuit amplifier in 14-DIP through-hole package with compatible supply voltage range (9V to 36V) and operating temperature range (-40°C to 85°C). This part exhibits a slightly higher slew rate of 10V/µs and maintains the 4 MHz gain bandwidth product. The input bias current is 50 pA and input offset voltage is 1.5 mV, representing acceptable deviations for applications where precision input characteristics are not critical. The OPA4131PJ is classified as Last Time Buy status with ROHS3 compliance. Current inventory of 2300 pieces is available.

Tertiary Recommendation: OPA4137PA and OPA4137P

The OPA4137PA (Texas Instruments, Last Time Buy status) and OPA4137P (Burr Brown, Active status) are J-FET 4-circuit amplifiers in 14-DIP through-hole package with compatible supply voltage range (4.5V to 36V) and operating temperature range (-40°C to 85°C). These parts feature a lower slew rate of 3.5V/µs and 1 MHz gain bandwidth product, with input bias current of 5 pA and input offset voltage of 1.5 mV. The OPA4137 series provides higher output current capability (60 mA per channel) compared to the OP482GP (10 mA per channel), making these parts suitable for applications requiring increased drive capability. The OPA4137P maintains active product status with 5491 pieces in inventory.

Not Recommended for Direct Substitution:

The LF444ACN/NOPB exhibits incompatible operating temperature range (0°C to 70°C versus -40°C to 85°C) and significantly different electrical characteristics including 1V/µs slew rate, 1 MHz gain bandwidth product, 10 pA input bias current, and 2 mV input offset voltage. The LMV934Q1MT/NOPB employs general purpose amplifier topology with rail-to-rail output and surface mount package (14-TSSOP), representing a fundamentally different device class unsuitable for direct replacement. The MAX409BESA+ is a single-circuit amplifier in 8-SOIC package, incompatible with the 4-circuit 14-DIP requirement.

Frequently Asked Questions (FAQ)

Q: Can the OP482GPZ be used as a direct replacement for the OP482GP without circuit modification?

A: Yes. The OP482GPZ maintains identical electrical specifications and mechanical package form factor (14-DIP through-hole). No circuit modification is required for direct substitution.

Q: What is the primary difference between the OP482GP and OPA4131PJ?

A: The OPA4131PJ exhibits a slightly higher slew rate (10V/µs versus 9V/µs) and higher input bias current (50 pA versus 3 pA). The gain bandwidth product remains identical at 4 MHz. Both parts maintain compatible supply voltage and operating temperature ranges. The OPA4131PJ is suitable for applications where the higher input bias current does not compromise circuit performance.

Q: Are the OPA4137PA and OPA4137P suitable replacements for the OP482GP?

A: The OPA4137 series is suitable for applications where lower slew rate (3.5V/µs) and lower gain bandwidth product (1 MHz) are acceptable. These parts provide higher output current capability (60 mA per channel) and lower input bias current (5 pA). The OPA4137 series is recommended only when application requirements permit the reduced bandwidth characteristics.

Q: Why is the LF444ACN/NOPB not recommended as a substitute?

A: The LF444ACN/NOPB operates across a narrower temperature range (0°C to 70°C) compared to the OP482GP (-40°C to 85°C), making it unsuitable for applications requiring full military or industrial temperature specifications. Additionally, the LF444ACN/NOPB exhibits significantly reduced slew rate (1V/µs) and gain bandwidth product (1 MHz).

Q: What packaging options are available for OP482GP substitutes?

A: All recommended J-FET 4-circuit substitutes (OP482GPZ, OPA4131PJ, OPA4137PA, OPA4137P) are available in 14-DIP through-hole package format, maintaining mechanical compatibility with the original OP482GP. The LMV934Q1MT/NOPB is available only in 14-TSSOP surface mount package and requires PCB redesign.

Q: What is the significance of product status (Active, Last Time Buy, Obsolete) in selecting a substitute?

A: Product status indicates component availability and manufacturer support. Active status parts (OP482GPZ, OPA4137P, LF444ACN/NOPB) are currently manufactured and supported. Last Time Buy status parts (OPA4131PJ, OPA4137PA) have limited production windows and should be evaluated for long-term supply chain requirements. Obsolete status (OP482GP) indicates discontinued manufacturing and necessitates substitution planning.

Q: Are all recommended substitutes RoHS3 compliant?

A: The OP482GPZ, OPA4131PJ, and OPA4137PA are explicitly specified as ROHS3 compliant. The OPA4137P does not specify RoHS status in the provided data. Compliance verification is required for applications subject to RoHS regulations.

Q: What is the difference between tube and bulk packaging for these components?

A: Tube packaging is standard for component distribution and handling, providing protection during storage and transport. Bulk packaging indicates loose component supply. The OP482GPZ is supplied in tube format, while the OPA4137P is supplied in bulk format. Packaging selection depends on production volume and handling requirements.

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