AD8606ARMZ-R2 Equivalent & Substitute Parts

Part Overview

The AD8606ARMZ-R2 is a CMOS general-purpose operational amplifier featuring dual circuits with rail-to-rail output capability, manufactured by Analog Devices Inc. This device is designed for low-power applications requiring precision amplification in a compact 8-MSOP surface-mount package. The part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	AD8606ARMZ-R2
Manufacturer	Analog Devices Inc.
Category	Linear, Amplifiers
Amplifier Type	CMOS
Number of Circuits	2
Output Type	Rail-to-Rail
Gain Bandwidth Product	10 MHz
Slew Rate	5 V/µs
Current - Input Bias	1 pA
Voltage - Input Offset	80 µV
Current - Supply	1 mA (x2 Channels)
Current - Output / Channel	80 mA
Voltage - Supply Span (Min)	2.7 V
Voltage - Supply Span (Max)	5.5 V
Operating Temperature	-40°C ~ 125°C
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the AD8606ARMZ-R2 is determined by the following critical parameters:

Primary Substitution Criteria:

Number of circuits: 2 (dual amplifier configuration)
Output type: Rail-to-rail capability
Package type: 8-MSOP surface mount
Operating temperature range: -40°C ~ 125°C
Supply voltage span: 2.7 V to 5.5 V minimum compatibility

Secondary Compatibility Parameters:

Gain bandwidth product: 10 MHz or higher
Slew rate: 5 V/µs or higher
Input bias current: 1 pA or lower
Input offset voltage: 80 µV or lower
Output current per channel: 80 mA or higher
Supply current: 1 mA (x2 Channels) or lower

Substitute parts are grouped into two categories based on functional equivalence:

Category A - Direct Equivalents (Identical Specifications): Parts maintaining all primary and secondary parameters within the specified ranges, differing only in packaging format or product status.

Category B - Functional Alternatives (Modified Specifications): Parts meeting all primary substitution criteria with variations in secondary parameters that remain within acceptable operational ranges for most applications.

Parameter Comparison

Parameter	AD8606ARMZ-R2	AD8606ARMZ-REEL	ADA4500-2ARMZ-R7	ADA4661-2ARMZ-RL	MAX4477AUA+T	MAX4477AUA+
Manufacturer	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Number of Circuits	2	2	2	2	2	2
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Push-Pull, Rail-to-Rail	Push-Pull, Rail-to-Rail
Amplifier Type	CMOS	CMOS	General Purpose	CMOS	General Purpose	General Purpose
Gain Bandwidth Product	10 MHz	10 MHz	10 MHz	4 MHz	10 MHz	10 MHz
Slew Rate	5 V/µs	5 V/µs	5.5 V/µs	2 V/µs	3 V/µs	3 V/µs
Current - Input Bias	1 pA	1 pA	0.7 pA	0.5 pA	1 pA	1 pA
Voltage - Input Offset	80 µV	80 µV	120 µV	30 µV	70 µV	70 µV
Current - Supply	1 mA (x2 Channels)	1 mA (x2 Channels)	1.5 mA (x2 Channels)	630 µA (x2 Channels)	2.5 mA (x2 Channels)	2.5 mA (x2 Channels)
Current - Output / Channel	80 mA	80 mA	75 mA	220 mA	48 mA	48 mA
Voltage - Supply Span (Min)	2.7 V	2.7 V	2.7 V	3 V	2.7 V	2.7 V
Voltage - Supply Span (Max)	5.5 V	5.5 V	5.5 V	18 V	5.5 V	5.5 V
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Not specified	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

AD8606ARMZ-REEL

This part is the direct equivalent of the AD8606ARMZ-R2, differing only in packaging format (Tape & Reel versus cut tape). The AD8606ARMZ-REEL maintains identical electrical specifications and is classified as Active product status. This substitute is recommended for applications requiring the exact performance characteristics of the original part. ROHS3 compliance and REACH unaffected status provide regulatory alignment for current manufacturing standards.

ADA4500-2ARMZ-R7

This part meets all primary substitution criteria with enhanced performance in slew rate (5.5 V/µs versus 5 V/µs) and reduced input bias current (0.7 pA versus 1 pA). The ADA4500-2ARMZ-R7 is classified as Active product status with ROHS3 compliance. Supply current is marginally higher at 1.5 mA per channel pair. This substitute is suitable for applications where improved slew rate performance is beneficial and the increased supply current is acceptable.

ADA4661-2ARMZ-RL

This part meets primary substitution criteria but exhibits reduced gain bandwidth product (4 MHz versus 10 MHz) and slew rate (2 V/µs versus 5 V/µs). The ADA4661-2ARMZ-RL offers superior input offset voltage (30 µV versus 80 µV) and significantly higher output current per channel (220 mA versus 80 mA). Supply voltage range extends to 18 V maximum. This substitute is applicable only to applications where lower bandwidth requirements are acceptable and higher output current capability is required. Active product status and ROHS3 compliance are confirmed.

MAX4477AUA+T and MAX4477AUA+

Both MAX4477 variants meet primary substitution criteria with identical electrical specifications. These parts differ from the original in output type classification (Push-Pull, Rail-to-Rail versus Rail-to-Rail) and reduced output current per channel (48 mA versus 80 mA). Slew rate is reduced to 3 V/µs. Both variants are classified as Active product status with ROHS3 compliance. The MAX4477AUA+T is supplied in Cut Tape & Digi-Reel packaging, while MAX4477AUA+ is supplied in Tube packaging. These substitutes are suitable for applications where the reduced output current and slew rate specifications are compatible with design requirements.

Frequently Asked Questions (FAQ)

Q: Can the AD8606ARMZ-REEL be used as a direct replacement for the AD8606ARMZ-R2?

A: Yes. The AD8606ARMZ-REEL is electrically identical to the AD8606ARMZ-R2. The only difference is packaging format: AD8606ARMZ-REEL is supplied in Tape & Reel format while AD8606ARMZ-R2 is supplied in cut tape format. Both parts maintain identical electrical performance across all specified parameters.

Q: What is the primary reason for substituting the AD8606ARMZ-R2?

A: The AD8606ARMZ-R2 is classified as obsolete product status. Active alternatives must be identified to ensure continued component availability for new designs and production support.

Q: Are all substitute parts compatible with the same PCB layout?

A: Yes. All substitute parts listed maintain the same package type (8-TSSOP, 8-MSOP with 0.118" width, 3.00mm) and surface-mount mounting type. PCB footprints are compatible across all listed alternatives.

Q: Which substitute part offers the best performance improvement?

A: Performance improvements vary by application requirement. The ADA4500-2ARMZ-R7 provides enhanced slew rate (5.5 V/µs) and lower input bias current (0.7 pA). The ADA4661-2ARMZ-RL provides superior input offset voltage (30 µV) and higher output current capability (220 mA per channel). Selection depends on specific application performance priorities.

Q: What is the impact of reduced slew rate in the MAX4477 variants?

A: The MAX4477 series operates at 3 V/µs slew rate compared to the original 5 V/µs. This reduction affects the maximum rate of output voltage change. Applications requiring high-speed signal transitions may experience performance degradation. Verify slew rate compatibility with specific circuit requirements before substitution.

Q: Can the ADA4661-2ARMZ-RL be used in applications designed for the AD8606ARMZ-R2?

A: The ADA4661-2ARMZ-RL meets primary substitution criteria but operates at reduced gain bandwidth product (4 MHz versus 10 MHz) and slew rate (2 V/µs versus 5 V/µs). Substitution is valid only for applications where these reduced performance specifications are acceptable. Verify bandwidth and slew rate requirements before implementation.

Q: Are all substitute parts RoHS compliant?

A: All active substitute parts listed (AD8606ARMZ-REEL, ADA4500-2ARMZ-R7, ADA4661-2ARMZ-RL, MAX4477AUA+T, MAX4477AUA+) are ROHS3 compliant. The original AD8606ARMZ-R2 RoHS status is not specified in available documentation.

Q: What is the difference between MAX4477AUA+T and MAX4477AUA+?

A: Both parts are electrically identical. The difference is packaging format: MAX4477AUA+T is supplied in Cut Tape & Digi-Reel format, while MAX4477AUA+ is supplied in Tube format. Select based on procurement and assembly process requirements.

Q: Do all substitute parts support the full -40°C to 125°C operating temperature range?

A: Yes. All substitute parts listed maintain the full -40°C to 125°C operating temperature range specified for the original AD8606ARMZ-R2.

Q: What supply voltage range is supported by all substitute parts?

A: All substitute parts support minimum supply voltage of 2.7 V. The ADA4661-2ARMZ-RL extends maximum supply voltage to 18 V, while all other parts maintain 5.5 V maximum. Verify supply voltage compatibility with specific circuit design before substitution.

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