ADA4084-2ARMZ-RL Equivalent & Substitute Parts

Part Overview

The ADA4084-2ARMZ-RL 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 Active product status and is supplied in Tape & Reel (TR) packaging with 8-MSOP form factor. The ADA4084-2ARMZ-RL serves applications requiring low-power, dual-channel amplification across industrial and consumer electronics. Equivalent and substitute parts are identified based on matching electrical performance parameters, mechanical compatibility, and packaging specifications to ensure direct circuit board replacement capability.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Slew Rate	4.6	V/µs
Gain Bandwidth Product	15.9	MHz
-3dB Bandwidth	13.9	MHz
Current - Input Bias	140	nA
Voltage - Input Offset	60	µV
Current - Supply (x2 Channels)	625	µA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	30	V
Operating Temperature	-40 to 125	°C
Mounting Type	Surface Mount	—
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the ADA4084-2ARMZ-RL are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalent (Direct Substitutes): Parts that maintain identical electrical specifications and packaging form factor. The ADA4084-2ARMZ-R7 is a parametric equivalent differing only in packaging format (Cut Tape & Digi-Reel® versus Tape & Reel). Both devices share identical slew rate (4.6 V/µs), gain bandwidth product (15.9 MHz), input bias current (140 nA), input offset voltage (60 µV), supply current (625 µA per channel), output current (30 mA per channel), and supply voltage range (3 V to 30 V).

Similar Manufacturer Parts (Functional Alternatives): Parts that provide equivalent functional performance within the general-purpose amplifier category but with differing electrical characteristics. The LM7322MME/NOPB, LM7332MM/NOPB, LM7332MME/NOPB, and LM7332MMX/NOPB from Texas Instruments operate as functional alternatives. These devices maintain dual-circuit, rail-to-rail configuration and identical operating temperature range (-40°C to 125°C), but exhibit higher slew rates (12 to 18 V/µs), higher gain bandwidth products (20 to 21 MHz), higher input bias currents (1 to 1.1 µA), higher input offset voltages (700 µV to 2 mV), higher supply currents (2 to 2.5 mA per channel), and higher output currents (70 to 100 mA per channel). All substitute parts maintain surface mount configuration and 8-pin packaging compatibility.

Parameter Comparison

Parameter	ADA4084-2ARMZ-RL	ADA4084-2ARMZ-R7	LM7322MME/NOPB	LM7332MM/NOPB	LM7332MME/NOPB	LM7332MMX/NOPB
Manufacturer	Analog Devices Inc.	Analog Devices Inc.	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
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)	4.6	4.6	18	12	12	12
Gain Bandwidth Product (MHz)	15.9	15.9	20	21	21	21
-3dB Bandwidth (MHz)	13.9	13.9	—	—	—	—
Current - Input Bias (nA)	140	140	1100	1000	1000	1000
Voltage - Input Offset (µV)	60	60	700000	2000	2000	2000
Current - Supply per Channel (µA)	625	625	1250	1000	1000	1000
Current - Output / Channel (mA)	30	30	100	70	70	70
Voltage - Supply Span (Min) (V)	3	3	2.5	2.5	2.5	2.5
Voltage - Supply Span (Max) (V)	30	30	32	32	32	32
Operating Temperature (°C)	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	8-MSOP	8-MSOP	8-VSSOP	8-VSSOP	8-VSSOP	8-VSSOP
Product Status	Active	Active	Last Time Buy	Last Time Buy	Last Time Buy	Active
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)	1 (Unlimited)

Engineering Selection Recommendations

ADA4084-2ARMZ-R7 (Parametric Equivalent): The ADA4084-2ARMZ-R7 is the direct parametric equivalent to the ADA4084-2ARMZ-RL. Both devices are manufactured by Analog Devices Inc. and maintain identical electrical specifications across all measured parameters. The sole distinction is packaging format: ADA4084-2ARMZ-R7 is supplied in Cut Tape & Digi-Reel® format while ADA4084-2ARMZ-RL is supplied in Tape & Reel format. Both maintain Active product status and ROHS3 compliance. Selection between these two parts depends on reel format requirements for automated assembly processes.

LM7332MMX/NOPB (Functional Alternative - Preferred): The LM7332MMX/NOPB from Texas Instruments is the recommended functional alternative among Texas Instruments options. This device maintains Active product status, whereas LM7322MME/NOPB, LM7332MM/NOPB, and LM7332MME/NOPB are designated Last Time Buy. The LM7332MMX/NOPB provides higher performance specifications including 12 V/µs slew rate, 21 MHz gain bandwidth product, 70 mA output current per channel, and 2 mA supply current per channel. All electrical parameters remain within acceptable ranges for general-purpose amplifier applications. The device maintains identical operating temperature range (-40°C to 125°C), ROHS3 compliance, and MSL rating. Package form factor is 8-VSSOP, which is mechanically compatible with 8-MSOP footprints in most circuit board designs.

LM7332MM/NOPB and LM7332MME/NOPB (Functional Alternatives - Secondary Options): These Texas Instruments devices provide equivalent functional performance to LM7332MMX/NOPB with identical electrical specifications. Both are designated Last Time Buy status. LM7332MM/NOPB is supplied in Cut Tape & Digi-Reel® format with 17,200 units in stock. LM7332MME/NOPB is supplied in Cut Tape & Digi-Reel® format with 17,600 units in stock. Selection between these options and LM7332MMX/NOPB depends on packaging format requirements and inventory availability.

LM7322MME/NOPB (Functional Alternative - Not Recommended for New Designs): The LM7322MME/NOPB is designated Last Time Buy status and exhibits the highest slew rate (18 V/µs) and highest input bias current (1.1 µA) among substitute options. This device is not recommended for new design implementations due to end-of-life status.

Frequently Asked Questions (FAQ)

Q: Can the ADA4084-2ARMZ-R7 be used as a direct replacement for the ADA4084-2ARMZ-RL?

A: Yes. The ADA4084-2ARMZ-R7 is a parametric equivalent with identical electrical specifications. Both devices share the same slew rate (4.6 V/µs), gain bandwidth product (15.9 MHz), input bias current (140 nA), input offset voltage (60 µV), supply current (625 µA per channel), output current (30 mA per channel), and supply voltage range (3 V to 30 V). The difference is packaging format: ADA4084-2ARMZ-R7 uses Cut Tape & Digi-Reel® while ADA4084-2ARMZ-RL uses Tape & Reel. Both maintain Active status and ROHS3 compliance.

Q: What are the key differences between the ADA4084-2ARMZ-RL and the LM7332 series?

A: The primary differences are slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current. The ADA4084-2ARMZ-RL operates at 4.6 V/µs slew rate with 15.9 MHz gain bandwidth product, 140 nA input bias current, and 60 µV input offset voltage. The LM7332 series operates at 12 V/µs slew rate with 21 MHz gain bandwidth product, 1 µA input bias current, and 2 mV input offset voltage. Both maintain identical operating temperature range (-40°C to 125°C), rail-to-rail output configuration, and dual-circuit architecture. The LM7332 series provides higher performance specifications suitable for applications requiring faster slew rates and higher output currents.

Q: Are the 8-MSOP and 8-VSSOP packages mechanically compatible?

A: Both 8-MSOP and 8-VSSOP packages are 8-pin surface mount packages with 0.118" (3.00mm) width. Pin pitch and lead spacing are compatible for circuit board footprint purposes. However, physical package dimensions may differ slightly. Verification of specific footprint compatibility with circuit board design files is required before implementation.

Q: Why are some substitute parts marked as Last Time Buy?

A: Last Time Buy designation indicates that the manufacturer has announced end-of-life for the product. LM7322MME/NOPB, LM7332MM/NOPB, and LM7332MME/NOPB are designated Last Time Buy by Texas Instruments. For new design implementations, LM7332MMX/NOPB is recommended as it maintains Active product status. Existing designs using Last Time Buy parts should plan transition strategies to Active alternatives.

Q: What is the significance of the MSL rating?

A: Moisture Sensitivity Level (MSL) 1 (Unlimited) indicates that the component has unlimited shelf life and does not require special moisture control during storage or handling. All listed parts maintain MSL 1 rating, eliminating moisture-related reliability concerns during manufacturing and assembly processes.

Q: Can the ADA4084-2ARMZ-RL be used in applications requiring higher output current?

A: The ADA4084-2ARMZ-RL provides 30 mA output current per channel. Applications requiring higher output current should consider the LM7332 series, which provides 70 mA output current per channel, or the LM7322MME/NOPB, which provides 100 mA output current per channel. Selection depends on specific circuit requirements and performance trade-offs.

Q: What compliance certifications apply to all listed parts?

A: All listed parts maintain ROHS3 compliance and are REACH Unaffected. Both certifications confirm environmental and regulatory compliance for industrial and consumer electronics applications. ECCN classification is EAR99 for all parts, and HTSUS code is 8542.33.0001.

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