AD8602DR CMOS Amplifier Equivalent & Substitute Parts

Part Overview

The AD8602DR is a CMOS amplifier integrated circuit manufactured by Analog Devices Inc., configured as a dual-channel (2 circuit) operational amplifier in an 8-SOIC surface mount package. This device features rail-to-rail output capability and is designed for low-power applications requiring precision analog signal conditioning.

The AD8602DR is classified as an obsolete product. Identification of equivalent and substitute parts is necessary to support ongoing system maintenance, design updates, and procurement continuity where the original part is no longer available through standard distribution channels.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Slew Rate	6	V/µs
Gain Bandwidth Product	8.4	MHz
Current - Input Bias	0.2	pA
Voltage - Input Offset	1.3	mV
Current - Supply (x2 Channels)	750	µA
Current - Output / Channel	50	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5.5	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

Substitution of the AD8602DR is determined by alignment across the following critical parameters:

Primary Substitution Criteria:

Amplifier Type (CMOS vs. General Purpose)
Number of Circuits (2 channels required)
Output Type (Rail-to-Rail capability)
Package / Case (8-SOIC form factor)
Mounting Type (Surface Mount)

Secondary Compatibility Parameters:

Slew Rate (6 V/µs baseline)
Gain Bandwidth Product (8.4 MHz baseline)
Current - Input Bias (0.2 pA baseline)
Voltage - Input Offset (1.3 mV baseline)
Current - Supply per channel (750 µA baseline)
Current - Output per channel (50 mA baseline)
Supply voltage range (2.7 V to 5.5 V)
Operating temperature range (-40°C to 125°C)

Substitute parts are grouped into two categories:

Direct Equivalents: Parts with identical or superior electrical performance characteristics, same package type (8-SOIC), and active product status. These parts maintain functional compatibility with minimal or no circuit redesign.

Functional Alternatives: Parts with similar core functionality (dual-channel, rail-to-rail, surface mount) but with variations in amplifier type classification, slew rate, gain bandwidth product, or supply current characteristics. These parts require evaluation of specific application requirements before implementation.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (mV)	Supply Current (µA)	Output Current (mA)	Package	Status
AD8602DR	Analog Devices	CMOS	6	8.4	0.2	1.3	750	50	8-SOIC	Obsolete
AD8602DRZ	Analog Devices	CMOS	6	8.4	0.2	1.3	750	50	8-SOIC	Active
ADA4500-2ARMZ	Analog Devices	General Purpose	5.5	10	0.7	0.120	1500	75	8-MSOP	Active
ADA4661-2ARMZ	Analog Devices	CMOS	2	4	0.5	0.030	630	220	8-MSOP	Active
MAX4471ESA+	Analog Devices/Maxim	General Purpose	0.002	0.009	200	0.500	0.75	36	8-SOIC	Active
MAX4471ESA+T	Analog Devices/Maxim	General Purpose	0.002	0.009	200	0.500	0.75	36	8-SOIC	Active
MCP6272-E/SN	Microchip Technology	General Purpose	0.9	2	1	3	170	25	8-SOIC	Active
MCP6272T-E/SN	Microchip Technology	General Purpose	0.9	2	1	3	170	25	8-SOIC	Active
NCS20032DR2G	onsemi	General Purpose	8	7	1	0.500	275	96	8-SOIC	Active
NCV20032DR2G	onsemi	General Purpose	8	7	1	0.500	275	14	8-SOIC	Active
OPA2340UA	Texas Instruments	CMOS	6	5.5	0.2	0.150	750	50	8-SOIC	Active

Engineering Selection Recommendations

Direct Equivalent (Recommended Primary Substitute):

The AD8602DRZ is the direct equivalent to the AD8602DR. This part maintains identical electrical specifications across all measured parameters: CMOS amplifier type, 6 V/µs slew rate, 8.4 MHz gain bandwidth product, 0.2 pA input bias current, 1.3 mV input offset voltage, 750 µA supply current per channel, and 50 mA output current per channel. The AD8602DRZ is classified as an active product with ROHS3 compliance and REACH unaffected status. The only difference is packaging format (tube vs. reel), which does not affect electrical performance. This part provides direct functional replacement with no circuit modification required.

CMOS Amplifier Alternatives (Same Amplifier Type):

The OPA2340UA (Texas Instruments) is a CMOS amplifier with identical slew rate (6 V/µs), input bias current (0.2 pA), and output current capability (50 mA) as the AD8602DR. The OPA2340UA offers superior input offset voltage (150 µV vs. 1.3 mV) and operates across the same temperature range (-40°C to 125°C). However, the OPA2340UA has a lower gain bandwidth product (5.5 MHz vs. 8.4 MHz) and a slightly higher minimum supply voltage (2.5 V vs. 2.7 V). This part is active and ROHS3 compliant. Selection of OPA2340UA is appropriate for applications where lower input offset voltage is beneficial and the reduced bandwidth is acceptable.

The ADA4661-2ARMZ (Analog Devices) is a CMOS amplifier with superior input offset voltage (30 µV) and higher output current capability (220 mA). However, this part has significantly lower slew rate (2 V/µs vs. 6 V/µs) and gain bandwidth product (4 MHz vs. 8.4 MHz). The ADA4661-2ARMZ is packaged in 8-MSOP format rather than 8-SOIC, requiring PCB layout modification. This part is active and ROHS3 compliant. Selection is appropriate only for applications with reduced bandwidth requirements and where higher output current is needed.

General Purpose Amplifier Alternatives (Different Amplifier Type):

The NCS20032DR2G (onsemi) is a general purpose amplifier with superior slew rate (8 V/µs vs. 6 V/µs) and higher output current capability (96 mA vs. 50 mA). The NCS20032DR2G maintains the 8-SOIC package format and operates across the same temperature range. However, this part has higher input bias current (1 pA vs. 0.2 pA) and lower gain bandwidth product (7 MHz vs. 8.4 MHz). This part is active and ROHS3 compliant. Selection is appropriate for applications requiring higher output current and slew rate where the increased input bias current is acceptable.

The MCP6272-E/SN (Microchip Technology) is a general purpose amplifier in 8-SOIC package with significantly lower supply current (170 µA vs. 750 µA per channel), making it suitable for ultra-low-power applications. However, this part has substantially lower slew rate (0.9 V/µs vs. 6 V/µs) and gain bandwidth product (2 MHz vs. 8.4 MHz). This part is active and ROHS3 compliant. Selection is appropriate only for low-frequency, low-power applications where bandwidth reduction is acceptable.

The MAX4471ESA+ (Analog Devices/Maxim Integrated) is a general purpose amplifier in 8-SOIC package with extremely low supply current (0.75 nA vs. 750 µA per channel). However, this part has drastically lower slew rate (0.002 V/µs vs. 6 V/µs), gain bandwidth product (9 kHz vs. 8.4 MHz), and reduced operating temperature range (-40°C to 85°C vs. -40°C to 125°C). This part is active and ROHS3 compliant. Selection is appropriate only for ultra-low-power, low-frequency applications where the reduced temperature range is acceptable.

The ADA4500-2ARMZ (Analog Devices) is a general purpose amplifier with higher gain bandwidth product (10 MHz vs. 8.4 MHz) and superior input offset voltage (120 µV vs. 1.3 mV). However, this part is packaged in 8-MSOP format rather than 8-SOIC, requiring PCB layout modification. The ADA4500-2ARMZ has higher supply current (1.5 mA vs. 750 µA per channel) and higher input bias current (0.7 pA vs. 0.2 pA). This part is active and ROHS3 compliant. Selection requires PCB redesign and is appropriate only for applications where the increased bandwidth and lower offset voltage justify the layout changes.

Frequently Asked Questions (FAQ)

Q: Can the AD8602DRZ be used as a direct replacement for the AD8602DR?

A: Yes. The AD8602DRZ is electrically identical to the AD8602DR across all specified parameters. The only difference is packaging format (tube vs. reel). No circuit modification is required. The AD8602DRZ is an active product, making it the recommended substitute for the obsolete AD8602DR.

Q: What is the primary difference between CMOS and General Purpose amplifier types in this comparison?

A: CMOS amplifiers (AD8602DR, OPA2340UA, ADA4661-2ARMZ) are optimized for extremely low input bias current (typically 0.2 to 0.5 pA) and low supply current, making them suitable for high-impedance input applications and battery-powered systems. General Purpose amplifiers (NCS20032DR2G, MCP6272, MAX4471ESA+) typically have higher input bias current (1 to 200 pA) but may offer other performance advantages such as higher slew rate or lower input offset voltage depending on the specific device.

Q: Why do some substitute parts use 8-MSOP packaging instead of 8-SOIC?

A: The 8-MSOP (Micro Small Outline Package) has a smaller footprint (0.118" width) compared to 8-SOIC (0.154" width). While both are 8-pin surface mount packages with the same pin count and spacing, the physical dimensions differ. Using an 8-MSOP part in place of an 8-SOIC part requires PCB layout modification and new footprint design. If PCB layout changes are not feasible, selection should be limited to 8-SOIC packaged alternatives.

Q: Which substitute part has the lowest power consumption?

A: The MAX4471ESA+ has the lowest supply current at 0.75 nanoamperes per channel, compared to 750 microamperes for the AD8602DR. However, the MAX4471ESA+ has drastically reduced bandwidth (9 kHz vs. 8.4 MHz) and slew rate (0.002 V/µs vs. 6 V/µs), limiting its use to DC and very low-frequency applications. For applications requiring moderate bandwidth with reduced power consumption, the MCP6272-E/SN offers 170 microamperes per channel supply current.

Q: Can I use the NCS20032DR2G as a substitute if my application requires higher output current?

A: The NCS20032DR2G provides 96 mA output current per channel compared to 50 mA for the AD8602DR, making it suitable for applications requiring higher output drive capability. However, the NCS20032DR2G is classified as a General Purpose amplifier rather than CMOS, resulting in higher input bias current (1 pA vs. 0.2 pA). Verify that the increased input bias current does not degrade performance in your specific application before implementation.

Q: What is the operating temperature range difference between AD8602DR and OPA2340UA?

A: The AD8602DR operates from -40°C to 125°C, while the OPA2340UA operates from -40°C to 85°C. If your application requires operation above 85°C, the OPA2340UA is not suitable. The AD8602DRZ maintains the full -40°C to 125°C range and is the appropriate substitute for temperature-critical applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this document are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: What is the significance of the Moisture Sensitivity Level (MSL) rating?

A: The AD8602DR has MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling. Most substitute parts also have MSL 1 or MSL 2 (1 Year). MSL 2 parts require controlled storage conditions and have a one-year shelf life from the date of manufacture. Verify MSL requirements for your supply chain and storage capabilities before selecting parts with higher MSL ratings.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message