OP284EP Equivalent & Substitute Parts

Part Overview

The OP284EP is a general-purpose operational amplifier manufactured by Analog Devices Inc., featuring dual circuits in a rail-to-rail configuration. This device is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design requirements and production continuity. The OP284EP operates across a wide supply voltage range of 3V to 36V with an operating temperature range of -40°C to 125°C, making it suitable for diverse industrial and commercial applications. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts offer similar functionality with variations in performance characteristics or packaging.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Slew Rate	4	V/µs
Gain Bandwidth Product	4.25	MHz
Current - Input Bias	80	nA
Voltage - Input Offset	100	µV
Current - Output / Channel	10	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	36	V
Operating Temperature Range	-40 to 125	°C
Mounting Type	Through Hole	—
Package / Case	8-DIP (0.300", 7.62mm)	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the OP284EP is determined by the following critical parameters: amplifier type (general purpose), number of circuits (2), output type (rail-to-rail), supply voltage range compatibility, operating temperature range, and physical package format. Equivalent parts maintain all electrical specifications and package dimensions. Substitute parts may exhibit variations in slew rate, gain bandwidth product, input bias current, input offset voltage, output current capability, and operating temperature range, provided they remain within acceptable application tolerances.

The substitute parts are grouped into two categories:

Direct Equivalent: OP284EPZ maintains identical electrical characteristics and 8-DIP packaging with active product status and RoHS3 compliance.

Functional Substitutes: ADA4084-2ARZ, LT1495IN8#PBF, LT1673CN8#PBF, and LT1673IN8#PBF provide dual-channel general-purpose amplification with rail-to-rail output in compatible package formats. These parts differ in performance metrics including slew rate, bandwidth, and supply current specifications, but retain core compatibility with the OP284EP application space.

Parameter Comparison

Parameter	OP284EP	OP284EPZ	ADA4084-2ARZ	LT1495IN8#PBF	LT1673CN8#PBF	LT1673IN8#PBF
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	2	2	2	2	2	2
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	4	4	4.6	0.001	0.005	0.005
Gain Bandwidth Product (MHz)	4.25	4.25	15.9	0.0027	0.012	0.012
Current - Input Bias (nA)	80	80	140	180	0.025	0.025
Voltage - Input Offset (µV)	100	100	30	200	200	200
Current - Output / Channel (mA)	10	10	30	1.5	1.5	1.5
Voltage - Supply Span Min (V)	3	3	3	2.2	2.2	2.2
Voltage - Supply Span Max (V)	36	36	30	36	36	36
Operating Temperature Range (°C)	-40 to 125	-40 to 125	-40 to 125	-40 to 85	0 to 70	-40 to 85
Mounting Type	Through Hole	Through Hole	Surface Mount	Through Hole	Through Hole	Through Hole
Package / Case	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-SOIC (0.154", 3.90mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

OP284EPZ is the primary direct equivalent for OP284EP replacement. This part maintains identical electrical specifications and 8-DIP through-hole packaging while offering active product status and ROHS3 compliance. Selection of OP284EPZ eliminates design modification requirements and ensures pin-for-pin compatibility with existing PCB layouts.

ADA4084-2ARZ serves as a functional substitute for applications requiring enhanced performance characteristics. This part provides higher slew rate (4.6 V/µs), superior gain bandwidth product (15.9 MHz), and increased output current capability (30 mA per channel). However, ADA4084-2ARZ utilizes surface-mount 8-SOIC packaging, requiring PCB redesign. Maximum supply voltage is limited to 30V compared to the OP284EP specification of 36V. Selection of ADA4084-2ARZ is appropriate for new designs prioritizing performance over form factor compatibility.

LT1495IN8#PBF and LT1673CN8#PBF / LT1673IN8#PBF are functional substitutes for low-power applications. These parts feature significantly reduced supply current consumption (1 µA to 1.9 µA per channel pair) and minimal input bias current, making them suitable for battery-powered or ultra-low-power designs. Trade-offs include substantially reduced slew rate and gain bandwidth product. LT1673CN8#PBF operates within a narrower temperature range (0°C to 70°C), while LT1673IN8#PBF extends to -40°C to 85°C. All LT-series parts maintain 8-DIP through-hole packaging and ROHS3 compliance.

Selection criteria: Choose OP284EPZ for direct replacement; select ADA4084-2ARZ for performance-enhanced designs accepting surface-mount conversion; select LT-series parts for power-constrained applications accepting reduced bandwidth performance.

Frequently Asked Questions (FAQ)

Q: Can OP284EPZ be used as a direct replacement for OP284EP without PCB modification?

A: Yes. OP284EPZ maintains identical electrical specifications and 8-DIP through-hole package dimensions. Pin-for-pin substitution is supported without circuit modification.

Q: What are the primary differences between OP284EP and ADA4084-2ARZ?

A: ADA4084-2ARZ offers superior performance with 4.6 V/µs slew rate versus 4 V/µs, 15.9 MHz gain bandwidth product versus 4.25 MHz, and 30 mA output current per channel versus 10 mA. However, ADA4084-2ARZ uses 8-SOIC surface-mount packaging instead of 8-DIP through-hole, and maximum supply voltage is 30V versus 36V. PCB redesign is required for implementation.

Q: Are LT1673 series parts suitable for high-frequency applications?

A: No. LT1673CN8#PBF and LT1673IN8#PBF feature 12 kHz gain bandwidth product, making them unsuitable for applications requiring bandwidth above this specification. These parts are optimized for low-power, low-frequency signal conditioning.

Q: What is the temperature range limitation of LT1673CN8#PBF?

A: LT1673CN8#PBF operates from 0°C to 70°C. Applications requiring -40°C operation must use LT1673IN8#PBF (-40°C to 85°C) or OP284EPZ (-40°C to 125°C).

Q: Can ADA4084-2ARZ be used in applications requiring 36V supply voltage?

A: No. ADA4084-2ARZ maximum supply voltage is 30V. Applications requiring 36V operation must use OP284EPZ, LT1495IN8#PBF, or LT1673 series parts.

Q: What is the primary advantage of LT1495IN8#PBF compared to LT1673 series?

A: LT1495IN8#PBF provides extended operating temperature range (-40°C to 85°C) compared to LT1673CN8#PBF (0°C to 70°C). Electrical specifications are otherwise similar between these parts.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. OP284EPZ, ADA4084-2ARZ, LT1495IN8#PBF, LT1673CN8#PBF, and LT1673IN8#PBF are all ROHS3 compliant.

Q: Which substitute part provides the lowest input bias current?

A: LT1673CN8#PBF and LT1673IN8#PBF feature 25 pA input bias current, substantially lower than OP284EP (80 nA). This characteristic is beneficial for high-impedance signal sources.

Q: Is through-hole mounting required for all substitutes?

A: No. ADA4084-2ARZ uses surface-mount 8-SOIC packaging. All other substitutes (OP284EPZ, LT1495IN8#PBF, LT1673CN8#PBF, LT1673IN8#PBF) use through-hole 8-DIP packaging.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message