AD822ARM-REEL Equivalent & Substitute Parts

Part Overview

The AD822ARM-REEL is a general-purpose operational amplifier manufactured by Analog Devices Inc., featuring dual circuits with rail-to-rail output capability in an 8-MSOP surface mount package. This device is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity. The part delivers 1.9 MHz gain bandwidth product with 3 V/µs slew rate, suitable for low-frequency signal conditioning and general analog applications.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Gain Bandwidth Product	1.9	MHz
Slew Rate	3	V/µs
Voltage Supply Span (Min)	5	V
Voltage Supply Span (Max)	30	V
Current - Input Bias	2	pA
Voltage - Input Offset	400	µV
Current - Supply	1.24	mA
Current - Output / Channel	20	mA
Operating Temperature Range	-40 to 85	°C
Mounting Type	Surface Mount	—
Package / Case	8-MSOP	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the AD822ARM-REEL is determined by the following critical parameters: dual-circuit configuration, rail-to-rail output capability, surface mount packaging, supply voltage range compatibility (5 V to 30 V minimum), and operating temperature range. Substitute parts are grouped into two categories:

Direct Equivalent: Parts maintaining identical electrical specifications and package form factor, differing only in product status or packaging format.

Functional Equivalent: Parts meeting or exceeding core electrical requirements (gain bandwidth product, slew rate, supply voltage range, output current capability) while potentially offering enhanced performance characteristics or alternative package options.

The following parameters establish substitution validity:

Dual operational amplifier configuration
Rail-to-rail output architecture
Supply voltage range encompassing 5 V to 30 V
Surface mount technology
Output current capability of 20 mA or greater per channel
Operating temperature range including -40°C to 85°C minimum

Parameter Comparison

Parameter	AD822ARM-REEL	AD822ARMZ-REEL	ADA4622-2ARZ	OPA2170AIDGK	OPA2171AIDGK	OPA2171AQDGKRQ1
Manufacturer	Analog Devices	Analog Devices	Analog Devices	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active	Active	Active	Active
Amplifier Type	General Purpose	General Purpose	J-FET	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
Gain Bandwidth Product (MHz)	1.9	1.9	8	1.2	3	3
Slew Rate (V/µs)	3	3	23	0.4	1.5	1.5
Voltage Supply Span Min (V)	5	5	5	2.7	2.7	2.7
Voltage Supply Span Max (V)	30	30	30	36	36	36
Current - Input Bias (pA)	2	2	2	8	8	8
Voltage - Input Offset (µV)	400	400	40	250	250	250
Current - Supply (mA)	1.24	1.24	0.665	0.11	0.475	0.475
Current - Output / Channel (mA)	20	20	20	20	35	35
Operating Temperature Range (°C)	-40 to 85	-40 to 85	-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-SOIC	8-VSSOP	8-VSSOP	8-VSSOP
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	2 (1 Year)	2 (1 Year)	2 (1 Year)

Engineering Selection Recommendations

AD822ARMZ-REEL is the primary direct equivalent for AD822ARM-REEL replacement. This part maintains identical electrical specifications and package form factor while offering active product status and ROHS3 compliance. The distinction between AD822ARM-REEL and AD822ARMZ-REEL is packaging format (Cut Tape & Digi-Reel versus standard reel configuration). This substitute provides seamless functional replacement with improved supply chain availability.

OPA2171AQDGKRQ1 is recommended for applications requiring automotive-grade qualification and AEC-Q100 compliance. This Texas Instruments part delivers enhanced performance with 3 MHz gain bandwidth product and 1.5 V/µs slew rate, exceeding the original specification. The part operates across an extended temperature range (-40°C to 125°C) and provides 35 mA output current per channel. ROHS3 compliance and active product status ensure long-term availability.

OPA2171AIDGK provides equivalent performance to OPA2171AQDGKRQ1 without automotive qualification, suitable for industrial and commercial applications. This part shares identical electrical specifications and active product status.

ADA4622-2ARZ is a J-FET amplifier offering significantly enhanced performance characteristics, including 8 MHz gain bandwidth product and 23 V/µs slew rate. This substitute is appropriate for applications requiring higher bandwidth and faster transient response. The 8-SOIC package differs from the original 8-MSOP form factor, requiring PCB layout modification. Extended operating temperature range (-40°C to 125°C) and ROHS3 compliance are provided.

OPA2170AIDGK operates at reduced bandwidth (1.2 MHz) and slew rate (0.4 V/µs) compared to the original specification. This part is suitable only for applications with relaxed frequency response requirements and lower supply current demand (110 µA). Extended supply voltage range (2.7 V to 36 V) and operating temperature range (-40°C to 125°C) are available.

Frequently Asked Questions (FAQ)

Q: Can AD822ARMZ-REEL directly replace AD822ARM-REEL in existing designs?

A: Yes. AD822ARMZ-REEL maintains identical electrical specifications, supply voltage range, operating temperature range, and package form factor. The difference is packaging format (Cut Tape & Digi-Reel versus standard reel). No circuit modifications are required.

Q: What is the primary reason for substituting AD822ARM-REEL?

A: AD822ARM-REEL is classified as obsolete. AD822ARMZ-REEL is the active equivalent from the same manufacturer, ensuring continued availability and compliance with current manufacturing standards.

Q: Are Texas Instruments OPA2171 parts pin-compatible with AD822ARM-REEL?

A: OPA2171AIDGK and OPA2171AQDGKRQ1 use 8-VSSOP packaging, while AD822ARM-REEL uses 8-MSOP packaging. Both packages are 8-pin surface mount with identical pin assignments for dual operational amplifier configurations. PCB footprint compatibility requires verification, as package dimensions differ slightly (8-VSSOP: 0.118" width versus 8-MSOP: 0.118" width, but different body profiles).

Q: What are the key performance differences between AD822ARMZ-REEL and OPA2171AQDGKRQ1?

A: OPA2171AQDGKRQ1 provides higher gain bandwidth product (3 MHz versus 1.9 MHz), faster slew rate (1.5 V/µs versus 3 V/µs), lower input offset voltage (250 µV versus 400 µV), and higher output current per channel (35 mA versus 20 mA). Extended operating temperature range (-40°C to 125°C versus -40°C to 85°C) and automotive qualification are additional benefits.

Q: Is ADA4622-2ARZ suitable as a direct replacement?

A: ADA4622-2ARZ is functionally equivalent but not a direct replacement. The J-FET amplifier architecture delivers superior performance (8 MHz bandwidth, 23 V/µs slew rate) but requires PCB layout modification due to 8-SOIC packaging versus 8-MSOP. Use this substitute only when enhanced bandwidth and slew rate are required.

Q: What supply voltage range is common to all substitute parts?

A: All substitute parts operate within the 5 V to 30 V supply range specified for AD822ARM-REEL. OPA2171 and OPA2170 parts extend the minimum supply voltage to 2.7 V, providing additional flexibility for low-voltage applications.

Q: Which substitute part offers the lowest power consumption?

A: OPA2170AIDGK consumes 110 µA total supply current, the lowest among all substitutes. This part is appropriate for battery-powered or ultra-low-power applications where bandwidth requirements are modest (1.2 MHz).

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All active substitute parts (AD822ARMZ-REEL, ADA4622-2ARZ, OPA2170AIDGK, OPA2171AIDGK, OPA2171AQDGKRQ1) are ROHS3 compliant. The original AD822ARM-REEL does not specify RoHS status.

Q: What is the moisture sensitivity level difference between Analog Devices and Texas Instruments parts?

A: Analog Devices parts (AD822ARM-REEL, AD822ARMZ-REEL, ADA4622-2ARZ) have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Texas Instruments parts (OPA2170AIDGK, OPA2171AIDGK, OPA2171AQDGKRQ1) have MSL 2 (1 Year), requiring controlled storage and handling within one year of manufacture.

Q: Which substitute part is recommended for automotive applications?

A: OPA2171AQDGKRQ1 is the only substitute with automotive-grade qualification and AEC-Q100 certification, meeting automotive industry reliability and performance standards.

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