MCP6484-E/SL Equivalent & Substitute Parts

Part Overview

The MCP6484-E/SL is a general-purpose operational amplifier manufactured by Microchip Technology, configured as a 4-circuit rail-to-rail amplifier in a 14-SOIC surface-mount package. This device is classified as Active product status and is ROHS3 compliant. The MCP6484-E/SL operates across a supply voltage range of 2.2V to 5.5V with an operating temperature range of -40°C to 125°C, making it suitable for low-power analog signal processing applications. Substitute parts are identified when equivalent functional performance can be achieved within the same package footprint and electrical operating parameters, ensuring direct board-level compatibility without design modification.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Voltage - Supply Span (Min)	2.2	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 125	°C
Slew Rate	2.7	V/µs
Gain Bandwidth Product	4	MHz
Current - Input Bias	1	pA
Voltage - Input Offset	1.5	mV
Current - Supply (x4 Channels)	240	µA
Current - Output / Channel	12	mA
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the MCP6484-E/SL are identified based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Mandatory Compatibility Criteria:

Package / Case: 14-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Number of Circuits: 4
Output Type: Rail-to-Rail
Operating Temperature Range: -40°C to 125°C
Voltage Supply Span: Minimum 2.2V to 5.5V maximum (or compatible subset)
Product Status: Active
RoHS Compliance: ROHS3 Compliant

Electrical Performance Parameters: Substitute parts must operate within the same supply voltage envelope and temperature range. Secondary electrical parameters including slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current per channel define performance classes and determine application suitability.

The substitute parts identified fall into two distinct performance categories:

Category 1 - General Purpose Amplifiers (Lower Performance): AD8544 series variants from Analog Devices Inc. These devices maintain the 4-circuit, rail-to-rail, 14-SOIC configuration with reduced slew rate (0.92V/µs) and lower gain bandwidth product (1 MHz) compared to the MCP6484-E/SL, but offer lower supply current consumption (45µA total) and higher output current capability (30mA per channel).

Category 2 - CMOS Amplifiers (Higher Performance): AD8604 and AD8608 series variants from Analog Devices Inc. These devices provide enhanced performance with higher slew rates (6V/µs and 5V/µs respectively) and higher gain bandwidth products (8.4MHz and 10MHz respectively), along with significantly lower input bias current (0.2pA to 1pA) and higher output current capability (50mA to 80mA per channel).

Parameter Comparison

Parameter	MCP6484-E/SL	AD8544ARZ	AD8604ARZ	AD8608ARZ
Manufacturer	Microchip Technology	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Amplifier Type	General Purpose	General Purpose	CMOS	CMOS
Number of Circuits	4	4	4	4
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Voltage - Supply Span (Min)	2.2V	2.7V	2.7V	2.7V
Voltage - Supply Span (Max)	5.5V	5.5V	5.5V	5.5V
Operating Temperature	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C
Slew Rate	2.7 V/µs	0.92 V/µs	6 V/µs	5 V/µs
Gain Bandwidth Product	4 MHz	1 MHz	8.4 MHz	10 MHz
Current - Input Bias	1 pA	4 pA	0.2 pA	1 pA
Voltage - Input Offset	1.5 mV	1 mV	80 µV	80 µV
Current - Supply (x4 Channels)	240 µA	45 µA	750 µA	1 mA
Current - Output / Channel	12 mA	30 mA	50 mA	80 mA
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Substitute Part Variants and Packaging Options

Base Part Number	Variant Part Number	Packaging Type	Inventory (Pcs)	Product Status
AD8544	AD8544ARZ	Tube	15845	Active
AD8544	AD8544ARZ-REEL	Cut Tape (CT) & Digi-Reel®	4790	Active
AD8544	AD8544ARZ-REEL7	Cut Tape (CT) & Digi-Reel®	26342	Active
AD8544	AD8544WARZ-R7	Tape & Reel (TR)	1414	Active
AD8604	AD8604ARZ	Tube	9097	Active
AD8604	AD8604ARZ-REEL	Cut Tape (CT) & Digi-Reel®	2081	Active
AD8604	AD8604ARZ-REEL7	Cut Tape (CT) & Digi-Reel®	12500	Active
AD8604	AD8604DRZ	Tube	9434	Active
AD8604	AD8604DRZ-REEL	Cut Tape (CT) & Digi-Reel®	5300	Active
AD8608	AD8608ARZ	Tube	9300	Active

Engineering Selection Recommendations

Substitution Compatibility Assessment:

All identified substitute parts maintain Active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment with the MCP6484-E/SL. The 14-SOIC package footprint is identical across all variants, permitting direct board-level substitution without PCB redesign.

AD8544 Series Selection Criteria:

The AD8544 series (AD8544ARZ, AD8544ARZ-REEL, AD8544ARZ-REEL7, AD8544WARZ-R7) represents a lower-performance, lower-power alternative. These devices are suitable for applications where the MCP6484-E/SL's slew rate (2.7V/µs) and gain bandwidth product (4MHz) exceed system requirements. The AD8544 series delivers 81% reduction in supply current consumption (45µA versus 240µA total) while maintaining the same operating temperature range and supply voltage envelope. Output current capability increases to 30mA per channel, compared to 12mA for the MCP6484-E/SL. Packaging options include Tube, Cut Tape with Digi-Reel®, and Tape & Reel formats, with highest inventory availability in the AD8544ARZ-REEL7 variant (26,342 units).

AD8604 Series Selection Criteria:

The AD8604 series (AD8604ARZ, AD8604ARZ-REEL, AD8604ARZ-REEL7, AD8604DRZ, AD8604DRZ-REEL) represents a higher-performance CMOS alternative with enhanced dynamic characteristics. These devices feature 2.2× higher slew rate (6V/µs) and 2.1× higher gain bandwidth product (8.4MHz) compared to the MCP6484-E/SL. Input offset voltage is reduced to 80µV (from 1.5mV), and input bias current is reduced to 0.2pA (from 1pA). Output current capability increases to 50mA per channel. Supply current consumption increases to 750µA total, representing a 3.1× increase. The AD8604 series is designated as DigiTrim® series. Packaging options include Tube and Cut Tape with Digi-Reel® formats, with highest inventory in the AD8604ARZ-REEL7 variant (12,500 units).

AD8608 Series Selection Criteria:

The AD8608 series (AD8608ARZ) represents the highest-performance CMOS option with 1.85× higher slew rate (5V/µs) and 2.5× higher gain bandwidth product (10MHz) compared to the MCP6484-E/SL. Input offset voltage is 80µV, and input bias current is 1pA (matching the MCP6484-E/SL). Output current capability reaches 80mA per channel, the highest among all substitutes. Supply current consumption is 1mA total, representing a 4.2× increase. The AD8608 series is designated as DigiTrim® series. Packaging is available in Tube format with 9,300 units in inventory.

Compliance and Regulatory Status:

All substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the MCP6484-E/SL classification. REACH status is Unaffected for all variants. ECCN classification is EAR99 and HTSUS code is 8542.33.0001 across all parts, confirming equivalent regulatory treatment.

Frequently Asked Questions (FAQ)

Q1: Can AD8544 series parts directly replace MCP6484-E/SL in existing designs?

A: Direct board-level replacement is possible due to identical 14-SOIC package footprint and matching pin configuration. However, the AD8544 series exhibits lower slew rate (0.92V/µs versus 2.7V/µs) and lower gain bandwidth product (1MHz versus 4MHz). Applications requiring higher-frequency response or faster signal transitions may experience performance degradation. Electrical simulation or bench testing is necessary to confirm functional equivalence for specific circuit implementations.

Q2: What are the key differences between AD8604 and AD8608 series?

A: Both AD8604 and AD8608 are CMOS amplifiers with superior performance compared to the MCP6484-E/SL. The AD8608 provides higher slew rate (5V/µs versus 6V/µs for AD8604) and higher gain bandwidth product (10MHz versus 8.4MHz). The AD8608 also delivers higher output current per channel (80mA versus 50mA). The AD8604 consumes less supply current (750µA versus 1mA total). Selection depends on whether maximum output drive capability or minimum power consumption is the design priority.

Q3: Are packaging variants (Tube, Cut Tape, Tape & Reel) electrically equivalent?

A: Yes. Packaging variants such as AD8544ARZ (Tube), AD8544ARZ-REEL (Cut Tape & Digi-Reel®), and AD8544WARZ-R7 (Tape & Reel) contain identical die and electrical specifications. Packaging differences affect only handling, storage, and assembly process compatibility. Selection should align with manufacturing equipment capabilities and supply chain logistics.

Q4: What is the minimum supply voltage requirement for substitute parts?

A: The MCP6484-E/SL operates at minimum 2.2V supply voltage. All AD8544, AD8604, and AD8608 series variants require minimum 2.7V supply voltage. Applications operating below 2.7V cannot use these substitutes. The MCP6484-E/SL remains the only option for 2.2V to 2.7V supply range operation.

Q5: How do input offset voltage specifications affect circuit accuracy?

A: The MCP6484-E/SL specifies 1.5mV input offset voltage. The AD8544 series reduces this to 1mV, while AD8604 and AD8608 series reduce it to 80µV. Lower input offset voltage improves DC accuracy in precision analog circuits, particularly in instrumentation and sensor signal conditioning applications. Applications with tight DC accuracy requirements benefit from AD8604 or AD8608 substitution.

Q6: What output current capability is required for load driving?

A: The MCP6484-E/SL provides 12mA output current per channel. The AD8544 series increases this to 30mA, AD8604 to 50mA, and AD8608 to 80mA. Applications requiring direct driving of low-impedance loads or multiple parallel stages benefit from higher output current capability. Verify load impedance and current requirements against substitute part specifications.

Q7: Is the operating temperature range identical across all parts?

A: Yes. The MCP6484-E/SL and all substitute parts (AD8544, AD8604, AD8608 series) operate across -40°C to 125°C temperature range. No thermal performance differences exist among these parts.

Q8: What is the significance of the DigiTrim® designation on AD8604 and AD8608?

A: DigiTrim® is an Analog Devices product series designation indicating CMOS amplifier technology with enhanced performance characteristics. This designation does not affect electrical compatibility or substitution suitability. It identifies the technology platform and performance class within the Analog Devices product portfolio.

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