LMF100CIWMX Equivalent & Substitute Parts

Part Overview

The LMF100CIWMX is a Universal Switched Capacitor Filter IC manufactured by Texas Instruments, designed as a 4th Order 100kHz filter in a 20-SOIC surface mount package. This component is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The part operates across a 4V to 15V supply voltage range and integrates two independent filters in a single package.

Substiute Parts

LMF100CIWMX

Texas InstrumentsIn Stock: 1719LMF100CIWMX Datasheet

Current PartRFQ

LTC1060CSW

Analog Devices Inc.In Stock: 2194LTC1060CSW Datasheet

MFR RecommendedRFQ

LTC1060CSW#PBF

Analog Devices Inc.In Stock: 2109LTC1060CSW#PBF Datasheet

MFR RecommendedRFQ

LTC1060CSW#TRPBF

Analog Devices Inc.In Stock: 2317LTC1060CSW#TRPBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LMF100CIWMX are identified based on the following allowable parameters:

• Filter Architecture: Universal Switched Capacitor topology
• Filter Order: 4th Order configuration
• Number of Filters: Dual filter integration
• Package Type: 20-SOIC surface mount form factor
• Mounting Compatibility: Surface mount technology

The LTC1060 series from Analog Devices Inc. satisfies these core substitution criteria. While the LTC1060 operates at a center frequency of 30kHz compared to the LMF100CIWMX's 100kHz specification, both devices share identical filter architecture, order, dual-filter configuration, and package footprint. The frequency difference reflects a design trade-off inherent to the LTC1060 series and does not prevent functional substitution in applications where the 30kHz specification is acceptable.

Available LTC1060 variants include standard tape packaging (LTC1060CSW), tube packaging (LTC1060CSW#PBF), and tape reel packaging (LTC1060CSW#TRPBF), all with active product status and full RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

The LTC1060 series provides active product status with full RoHS3 compliance, addressing the obsolescence and regulatory limitations of the LMF100CIWMX. All three LTC1060 variants (LTC1060CSW, LTC1060CSW#PBF, LTC1060CSW#TRPBF) are functionally equivalent and differ only in packaging format.

Selection between variants depends on procurement and assembly requirements:

• LTC1060CSW: Standard tape packaging for automated pick-and-place assembly
• LTC1060CSW#PBF: Tube packaging for manual or semi-automated handling
• LTC1060CSW#TRPBF: Tape reel packaging for high-volume automated production

The LTC1060 operates at ±2.37V to 5V supply voltage, which differs from the LMF100CIWMX's 4V to 15V range. Circuit design must accommodate this narrower voltage specification. The improved moisture sensitivity rating (MSL 1 vs. 2A) and unlimited shelf life provide superior handling and storage characteristics compared to the original part.

Frequently Asked Questions (FAQ)

Q: Can the LTC1060 directly replace the LMF100CIWMX without circuit modifications?

A: The LTC1060 shares identical filter architecture, order, dual-filter configuration, and 20-SOIC package footprint, enabling direct PCB-level substitution. However, the supply voltage range differs (±2.37V to 5V for LTC1060 versus 4V to 15V for LMF100CIWMX), requiring circuit design review to confirm compatibility with your power supply specifications.

Q: What is the significance of the 100kHz versus 30kHz frequency difference?

A: The LMF100CIWMX operates at 100kHz center frequency while the LTC1060 operates at 30kHz. Both devices use identical Universal Switched Capacitor filter topology and 4th Order configuration. The frequency difference is a characteristic of the LTC1060 design and does not affect substitution validity in applications where the 30kHz specification is acceptable.

Q: Are all three LTC1060 variants electrically identical?

A: Yes. LTC1060CSW, LTC1060CSW#PBF, and LTC1060CSW#TRPBF are electrically identical. Differences exist only in packaging format: standard tape, tube, and tape reel respectively. Selection depends on your assembly process and procurement workflow.

Q: Does the LTC1060 meet current regulatory requirements?

A: Yes. The LTC1060 series is RoHS3 compliant and carries active product status from Analog Devices Inc., addressing the RoHS non-compliance and obsolescence status of the LMF100CIWMX.

Q: What are the handling and storage advantages of the LTC1060?

A: The LTC1060 has Moisture Sensitivity Level 1 with unlimited shelf life, compared to the LMF100CIWMX's MSL 2A with 4-week shelf life. This provides superior protection against moisture-related failures and eliminates time-sensitive storage constraints.