MCP6484T-E/ST Equivalent & Substitute Parts

Part Overview

The MCP6484T-E/ST is a general-purpose operational amplifier manufactured by Microchip Technology, configured as a 4-circuit rail-to-rail amplifier in a 14-TSSOP surface mount package. This device operates across a supply voltage range of 2.2 V to 5.5 V with an operating temperature range of -40°C to 125°C. The MCP6484T-E/ST is classified as an active product with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Substitute parts are identified when equivalent electrical performance, package compatibility, and operational specifications align with the original component, enabling direct replacement in circuit designs without modification.

Key Parameters

Parameter	Value	Unit
Manufacturer	Microchip Technology
Part Number	MCP6484T-E/ST
Category	Linear, Amplifiers
Amplifier Type	General Purpose
Number of Circuits	4
Output Type	Rail-to-Rail
Package / Case	14-TSSOP (0.173", 4.40mm 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	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the MCP6484T-E/ST are identified based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Matching Parameters:

Package type: 14-TSSOP surface mount configuration
Number of circuits: 4 independent amplifier channels
Output type: Rail-to-rail capability
Supply voltage range: Minimum 2.2 V to maximum 5.5 V overlap
Operating temperature range: -40°C to 125°C
Mounting type: Surface mount
Product status: Active

Substitution Logic: Substitute parts must maintain the same 14-TSSOP package footprint and pinout compatibility. All substitute devices are configured as 4-circuit amplifiers with rail-to-rail output capability. The supply voltage range of substitute parts must encompass or overlap with the original part's 2.2 V to 5.5 V specification. Operating temperature range must match or exceed -40°C to 125°C. All substitute parts maintain ROHS3 compliance and MSL 1 rating.

Substitute parts are grouped into two categories based on amplifier technology: general-purpose BJT-based amplifiers (AD8544 series) and CMOS amplifiers (AD8604, AD8608, AD8618 series). Within each technology category, variants differ by packaging format (Tube versus Cut Tape & Digi-Reel) but maintain identical electrical specifications.

Parameter Comparison

Parameter	MCP6484T-E/ST	AD8544ARUZ	AD8544ARUZ-REEL	AD8604ARUZ	AD8604ARUZ-REEL	AD8604DRUZ	AD8604DRUZ-REEL	AD8608ARUZ	AD8608ARUZ-REEL	AD8618ARUZ	AD8618ARUZ-REEL
Manufacturer	Microchip	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Analog Devices
Number of Circuits	4	4	4	4	4	4	4	4	4	4	4
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Package / Case	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Voltage - Supply Span (Min)	2.2 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V
Voltage - Supply Span (Max)	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5 V	5 V
Operating Temperature	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C
Slew Rate	2.7 V/µs	0.92 V/µs	0.92 V/µs	6 V/µs	6 V/µs	6 V/µs	6 V/µs	5 V/µs	5 V/µs	12 V/µs	12 V/µs
Gain Bandwidth Product	4 MHz	1 MHz	1 MHz	8.4 MHz	8.4 MHz	8.4 MHz	8.4 MHz	10 MHz	10 MHz	24 MHz	24 MHz
Current - Input Bias	1 pA	4 pA	4 pA	0.2 pA	0.2 pA	0.2 pA	0.2 pA	1 pA	1 pA	0.2 pA	0.2 pA
Voltage - Input Offset	1.5 mV	1 mV	1 mV	80 µV	80 µV	1.3 mV	1.3 mV	80 µV	80 µV	23 µV	23 µV
Current - Supply (x4 Channels)	240 µA	45 µA	45 µA	750 µA	750 µA	750 µA	750 µA	1 mA	1 mA	1.7 mA	1.7 mA
Current - Output / Channel	12 mA	30 mA	30 mA	50 mA	50 mA	50 mA	50 mA	80 mA	80 mA	150 mA	150 mA
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts listed maintain active product status and ROHS3 compliance, ensuring regulatory alignment with the MCP6484T-E/ST. The 14-TSSOP package footprint is identical across all devices, enabling direct PCB layout compatibility without redesign.

AD8544 Series (General-Purpose BJT Technology): The AD8544ARUZ and AD8544ARUZ-REEL are general-purpose amplifiers functionally equivalent to the MCP6484T-E/ST in circuit topology. These devices operate within the 2.7 V to 5.5 V supply range and maintain the -40°C to 125°C temperature specification. The AD8544 series exhibits lower slew rate (0.92 V/µs) and reduced gain bandwidth product (1 MHz) compared to the MCP6484T-E/ST, making them suitable for applications where bandwidth requirements are less demanding. Supply current consumption is significantly lower at 45 µA across four channels.

AD8604 Series (CMOS Technology): The AD8604ARUZ, AD8604ARUZ-REEL, AD8604DRUZ, and AD8604DRUZ-REEL represent CMOS-based alternatives with enhanced performance characteristics. These devices provide higher slew rate (6 V/µs) and increased gain bandwidth product (8.4 MHz) relative to the MCP6484T-E/ST. Input bias current is reduced to 0.2 pA, and input offset voltage is minimized to 80 µV (ARUZ variants) or 1.3 mV (DRUZ variants). Output current capability reaches 50 mA per channel. Supply current consumption increases to 750 µA across four channels.

AD8608 Series (Enhanced CMOS Technology): The AD8608ARUZ and AD8608ARUZ-REEL offer intermediate performance between the AD8604 and AD8618 series. Slew rate is 5 V/µs with gain bandwidth product of 10 MHz. Input offset voltage is 80 µV, and output current capability is 80 mA per channel. Supply current consumption is 1 mA across four channels.

AD8618 Series (High-Performance CMOS Technology): The AD8618ARUZ and AD8618ARUZ-REEL deliver the highest performance specifications with slew rate of 12 V/µs and gain bandwidth product of 24 MHz. Input offset voltage is minimized to 23 µV, and output current capability reaches 150 mA per channel. Supply current consumption is 1.7 mA across four channels. Maximum supply voltage is limited to 5 V, requiring verification for applications requiring 5.5 V operation.

Packaging Variants: Tube packaging (ARUZ, DRUZ) and Cut Tape & Digi-Reel packaging (ARUZ-REEL, DRUZ-REEL) variants of each base part number maintain identical electrical specifications. Selection between packaging formats depends on procurement and assembly requirements.

Frequently Asked Questions (FAQ)

Q: Can AD8544ARUZ directly replace MCP6484T-E/ST in all applications?

A: The AD8544ARUZ maintains identical 14-TSSOP package footprint and pinout compatibility. Both devices are 4-circuit rail-to-rail amplifiers with -40°C to 125°C operating temperature range and ROHS3 compliance. However, the AD8544 exhibits lower slew rate (0.92 V/µs versus 2.7 V/µs) and reduced gain bandwidth product (1 MHz versus 4 MHz). Direct replacement is valid only for applications where these reduced performance specifications are acceptable.

Q: What is the difference between AD8604ARUZ and AD8604DRUZ?

A: Both variants are CMOS 4-circuit amplifiers in 14-TSSOP packages with identical electrical performance except for input offset voltage specification. AD8604ARUZ specifies 80 µV input offset voltage, while AD8604DRUZ specifies 1.3 mV. Both maintain 6 V/µs slew rate, 8.4 MHz gain bandwidth product, and 50 mA output current per channel. Selection depends on input offset voltage tolerance requirements.

Q: Are packaging variants (Tube versus Cut Tape & Digi-Reel) electrically equivalent?

A: Yes. Tube packaging (ARUZ, DRUZ) and Cut Tape & Digi-Reel packaging (ARUZ-REEL, DRUZ-REEL) variants of the same base part number maintain identical electrical specifications. Packaging format selection is determined by procurement quantity, assembly equipment compatibility, and supply chain requirements.

Q: Can AD8618ARUZ operate at 5.5 V supply voltage?

A: No. The AD8618ARUZ maximum supply voltage specification is 5 V, compared to the MCP6484T-E/ST maximum of 5.5 V. Applications requiring 5.5 V operation must use alternative substitute parts (AD8544, AD8604, or AD8608 series) that support the full 5.5 V maximum supply voltage.

Q: Which substitute part offers the lowest power consumption?

A: The AD8544ARUZ and AD8544ARUZ-REEL provide the lowest supply current consumption at 45 µA across four channels, compared to 240 µA for the MCP6484T-E/ST. This represents an 81% reduction in supply current. However, this performance advantage is accompanied by reduced slew rate and gain bandwidth product specifications.

Q: What is the primary advantage of CMOS-based substitutes (AD8604, AD8608, AD8618) over the BJT-based AD8544?

A: CMOS-based substitutes offer significantly lower input bias current (0.2 to 1 pA versus 4 pA), reduced input offset voltage (23 to 80 µV versus 1 mV), and higher slew rate and gain bandwidth product. These characteristics make CMOS devices suitable for precision signal conditioning, low-bias-current sensing, and higher-frequency applications. Trade-offs include increased supply current consumption.

Q: Are all substitute parts compatible with the same PCB layout as MCP6484T-E/ST?

A: Yes. All substitute parts utilize the identical 14-TSSOP (0.173", 4.40mm width) surface mount package. PCB footprint, pad layout, and pinout are directly compatible without modification. No PCB redesign is required for substitution.

Q: What compliance certifications are maintained across all substitute parts?

A: All substitute parts maintain ROHS3 compliance and MSL 1 (unlimited moisture sensitivity level) rating, matching the MCP6484T-E/ST. All devices are classified as active products. REACH status is unaffected for all parts. ECCN classification is EAR99 for all devices.

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