OP184ES Equivalent & Substitute Parts

Part Overview

The OP184ES is a general-purpose operational amplifier manufactured by Analog Devices Inc., housed in an 8-SOIC surface-mount package. This device features rail-to-rail output capability and is designed for applications requiring low-power, single-circuit amplification across a wide supply voltage range. The OP184ES is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. Substitute parts must maintain functional compatibility while meeting current availability and compliance requirements.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
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 - Supply	2.25	mA
Current - Output / Channel	10	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	-40 to 125	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the OP184ES are classified based on electrical parameter compatibility and physical packaging constraints. The primary substitution criteria are:

Electrical Compatibility Parameters:

Amplifier type (General Purpose)
Number of circuits (1)
Output type (Rail-to-Rail)
Supply voltage range (minimum 3V, maximum 36V or higher)
Operating temperature range (-40°C to 125°C or compatible subset)
Package type (8-SOIC surface mount)

Substitution Categories:

Direct Equivalent: Parts with identical electrical specifications and active product status, differing only in packaging format (tube vs. tape & reel).

Functional Equivalent: Parts with comparable electrical performance within the same package type, meeting the same functional requirements despite minor parameter variations.

Compatible Substitute: Parts with enhanced or alternative electrical characteristics that remain compatible with the OP184ES application envelope, provided supply voltage and temperature ranges overlap.

Parameter Comparison

Parameter	OP184ES	OP184ESZ	ADA4084-1ARZ	LM7301IM/NOPB	LM7301IMX/NOPB	OPA27GU	OPA27GU/2K5
Manufacturer	Analog Devices	Analog Devices	Analog Devices	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active	Obsolete	Active	Active	Active
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	1	1	1	1	1	1	1
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	—	—
Slew Rate (V/µs)	4	4	4.6	1.25	1.25	1.9	1.9
Gain Bandwidth Product (MHz)	4.25	4.25	15.9	4	4	8	8
Current - Input Bias (nA)	80	80	140	103	103	15	15
Voltage - Input Offset (µV)	100	100	40	40	40	25	25
Current - Supply (mA)	2.25	2.25	0.625	0.72	0.72	3.3	3.3
Current - Output / Channel (mA)	10	10	30	—	—	25	25
Voltage - Supply Span Min (V)	3	3	3	1.8	1.8	8	8
Voltage - Supply Span Max (V)	36	36	30	32	32	44	44
Operating Temperature (°C)	-40 to 125	-40 to 125	-40 to 125	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

OP184ESZ (Analog Devices Inc.)

OP184ESZ is the direct equivalent of OP184ES with identical electrical specifications. The primary distinction is product status: OP184ESZ is active with 18,442 units in stock, compared to the obsolete OP184ES. OP184ESZ is packaged in tube format and carries ROHS3 compliance certification. This part is the preferred replacement for OP184ES in new designs and production continuity.

ADA4084-1ARZ (Analog Devices Inc.)

ADA4084-1ARZ is an active Analog Devices product offering enhanced electrical performance. It provides higher slew rate (4.6 V/µs vs. 4 V/µs), significantly higher gain bandwidth product (15.9 MHz vs. 4.25 MHz), lower input offset voltage (40 µV vs. 100 µV), and higher output current capability (30 mA vs. 10 mA). Supply current is substantially lower (625 µA vs. 2.25 mA). The maximum supply voltage is 30V, which is within the OP184ES range but does not extend to 36V. Operating temperature range is -40°C to 125°C, matching OP184ES. ROHS3 compliance and MSL 1 rating are provided. This part is suitable for applications requiring improved bandwidth and lower power consumption.

LM7301IMX/NOPB (Texas Instruments)

LM7301IMX/NOPB is an active Texas Instruments product in tape & reel packaging. It maintains rail-to-rail output and 8-SOIC package compatibility. The supply voltage range is 1.8V to 32V, which overlaps with OP184ES but does not extend to 36V maximum. Operating temperature range is -40°C to 85°C, which is narrower than OP184ES. Slew rate (1.25 V/µs) and gain bandwidth product (4 MHz) are lower than OP184ES. Input bias current (103 nA) and input offset voltage (40 µV) differ from OP184ES specifications. ROHS3 compliance and MSL 1 rating are provided. This part is suitable for applications with lower supply voltage requirements and reduced temperature range.

LM7301IM/NOPB (Texas Instruments)

LM7301IM/NOPB is an obsolete Texas Instruments product with identical electrical specifications to LM7301IMX/NOPB. Product status is obsolete with 1,280 units in stock. This part is not recommended for new designs due to obsolescence.

OPA27GU and OPA27GU/2K5 (Texas Instruments)

OPA27GU and OPA27GU/2K5 are active Texas Instruments products with identical electrical specifications, differing only in packaging format (tube vs. cut tape & digi-reel). Both parts feature lower input bias current (15 nA vs. 80 nA) and lower input offset voltage (25 µV vs. 100 µV). Slew rate (1.9 V/µs) and gain bandwidth product (8 MHz) differ from OP184ES. Supply voltage range is 8V to 44V, which does not include the 3V minimum of OP184ES. Operating temperature range is -40°C to 85°C. Moisture sensitivity level is MSL 3 (168 hours), which is more restrictive than OP184ES MSL 1. ROHS3 compliance is provided. These parts are suitable for applications with higher minimum supply voltage requirements and precision offset voltage specifications.

Frequently Asked Questions (FAQ)

Q: Can OP184ESZ be used as a direct replacement for OP184ES?

A: Yes. OP184ESZ is electrically identical to OP184ES across all specified parameters. The difference is packaging format (tube vs. original packaging) and product status (active vs. obsolete). OP184ESZ is the recommended replacement for OP184ES.

Q: What is the primary reason to substitute OP184ES?

A: OP184ES is classified as obsolete. OP184ESZ provides identical functionality with active product status and current availability, ensuring long-term supply chain reliability.

Q: Does ADA4084-1ARZ maintain compatibility with OP184ES applications?

A: ADA4084-1ARZ is compatible with OP184ES applications that operate within the overlapping parameter ranges. The maximum supply voltage is 30V (vs. 36V for OP184ES), and performance is enhanced in bandwidth and slew rate. Applications requiring the full 36V supply range must use OP184ESZ or equivalent.

Q: Can OPA27GU replace OP184ES in all applications?

A: OPA27GU is not a direct replacement. The minimum supply voltage is 8V, which excludes applications requiring 3V operation. OPA27GU is suitable only for applications with supply voltages of 8V or higher. Moisture sensitivity level is also more restrictive (MSL 3 vs. MSL 1).

Q: What is the significance of the 8-SOIC package specification?

A: The 8-SOIC package is a surface-mount standard with 0.154" width and 3.90mm body width. All listed substitute parts use this identical package, ensuring direct PCB footprint compatibility without layout modifications.

Q: Are all substitute parts ROHS3 compliant?

A: All active substitute parts (OP184ESZ, ADA4084-1ARZ, LM7301IMX/NOPB, OPA27GU, OPA27GU/2K5) carry ROHS3 compliance certification. The original OP184ES does not specify ROHS status.

Q: What is the difference between LM7301IM/NOPB and LM7301IMX/NOPB?

A: Both parts have identical electrical specifications. LM7301IM/NOPB is obsolete (tube packaging), while LM7301IMX/NOPB is active (tape & reel packaging). LM7301IMX/NOPB is the recommended choice for new designs.

Q: Does operating temperature range affect substitution decisions?

A: Yes. OP184ES operates from -40°C to 125°C. LM7301 series and OPA27 series operate from -40°C to 85°C. Applications requiring operation above 85°C must use OP184ESZ or ADA4084-1ARZ.

Q: What is the impact of moisture sensitivity level (MSL) on component handling?

A: MSL 1 (unlimited) allows indefinite shelf storage without moisture precautions. MSL 3 (168 hours) requires controlled storage and baking procedures before reflow soldering. OPA27GU and OPA27GU/2K5 have MSL 3 ratings, requiring additional handling protocols compared to OP184ES (MSL 1).

Q: Can supply current differences affect circuit design?

A: Yes. OP184ES draws 2.25 mA, while ADA4084-1ARZ draws 0.625 mA and LM7301 series draws 0.72 mA. Lower supply current reduces power dissipation and thermal load. Higher supply current (OPA27 series at 3.3 mA) may require larger power supply capacity. Circuit design must account for these differences in power budget calculations.

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