MCP618-I/MS Equivalent & Substitute Parts

Part Overview

The MCP618-I/MS is a general-purpose operational amplifier manufactured by Microchip Technology, housed in an 8-MSOP surface-mount package. This device is classified as a rail-to-rail output amplifier with a single circuit configuration, designed for low-power applications requiring moderate bandwidth performance. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts become necessary when addressing supply chain constraints, inventory availability, or when design specifications permit alternative amplifier topologies that meet or exceed the electrical requirements of the original component.

Substiute Parts

MCP618-I/MS

Microchip TechnologyIn Stock: 877MCP618-I/MS Datasheet

Current PartRFQ

LTC6800HMS8#PBF

Analog Devices Inc.In Stock: 1432LTC6800HMS8#PBF Datasheet

MFR RecommendedRFQ

LTC6800HMS8#TRPBF

Analog Devices Inc.In Stock: 2108LTC6800HMS8#TRPBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MCP618-I/MS is permissible when the replacement device satisfies the following criteria:

Package Compatibility: The substitute must utilize the 8-MSOP surface-mount package to ensure mechanical and electrical compatibility with existing PCB layouts and assembly processes.

Output Configuration: Rail-to-rail output capability is required to maintain voltage swing performance across the specified supply voltage range.

Supply Voltage Range: The substitute must operate within or encompass the 2.3 V to 5.5 V supply span of the original part.

Single Circuit Configuration: The substitute must contain exactly one amplifier circuit per package.

Compliance Requirements: The substitute must maintain RoHS3 compliance and REACH unaffected status to satisfy regulatory and environmental standards.

The LTC6800HMS8#PBF and LTC6800HMS8#TRPBF devices from Analog Devices Inc. meet these substitution criteria. Both parts are instrumentation amplifiers rather than general-purpose amplifiers, representing a functional upgrade in amplifier topology while maintaining package, output type, and compliance equivalence.

Parameter Comparison

Engineering Selection Recommendations

Packaging Format Consideration: The LTC6800HMS8#PBF is supplied in Tube packaging, while the LTC6800HMS8#TRPBF is supplied in Cut Tape (CT) & Digi-Reel® format. Selection between these two variants depends on assembly process requirements and volume handling procedures rather than electrical performance, as both devices are electrically identical.

Supply Voltage Compatibility: The substitute parts require a minimum supply voltage of 2.7 V compared to the MCP618-I/MS minimum of 2.3 V. Applications operating below 2.7 V are not compatible with the LTC6800 series substitutes.

Temperature Range Extension: The LTC6800HMS8#PBF and LTC6800HMS8#TRPBF extend the maximum operating temperature to 125°C, compared to 85°C for the MCP618-I/MS. This represents an operational advantage for high-temperature environments.

Compliance Status: All three devices maintain Active product status, RoHS3 compliance, REACH unaffected designation, and unlimited moisture sensitivity rating, ensuring regulatory equivalence across supply chain transitions.

Frequently Asked Questions (FAQ)

Q: Can the LTC6800HMS8 series directly replace the MCP618-I/MS in existing designs?

A: Direct replacement is permissible when the application supply voltage remains at or above 2.7 V. The 8-MSOP package footprint is identical, and both devices provide rail-to-rail output operation. However, the functional topology differs: the MCP618-I/MS is a general-purpose amplifier, while the LTC6800 series are instrumentation amplifiers. Circuit performance characteristics will differ due to this topology change.

Q: What is the difference between LTC6800HMS8#PBF and LTC6800HMS8#TRPBF?

A: These devices are electrically and functionally identical. The difference lies in packaging format: LTC6800HMS8#PBF is supplied in Tube packaging, while LTC6800HMS8#TRPBF is supplied in Cut Tape (CT) & Digi-Reel® format. Selection depends on assembly line equipment and handling procedures.

Q: Are there supply voltage limitations when substituting?

A: Yes. The MCP618-I/MS operates from 2.3 V minimum, while the LTC6800 substitutes require 2.7 V minimum. Applications designed for 2.3 V to 2.6 V operation cannot use the LTC6800 series as substitutes.

Q: Do the substitute parts maintain the same compliance certifications?

A: Yes. Both LTC6800HMS8#PBF and LTC6800HMS8#TRPBF maintain RoHS3 compliance, REACH unaffected status, and unlimited moisture sensitivity rating (MSL 1), matching the MCP618-I/MS compliance profile.

Q: What performance differences should be considered?

A: The LTC6800 series provide improved input bias current (4 nA versus 15 nA), lower input offset voltage (100 µV versus 150 µV), higher slew rate (0.2 V/µs versus 0.08 V/µs), and extended operating temperature range (-40°C to 125°C versus -40°C to 85°C). Supply current is significantly lower (1.3 µA versus 19 µA), providing power consumption advantages.

Q: Is the 8-MSOP package identical across all three devices?

A: Yes. All three devices utilize the 8-MSOP surface-mount package with 0.118" width and 3.00 mm body dimensions, ensuring PCB layout and assembly compatibility.