LMF100CIWMX/NOPB >
LMF100CIWMX/NOPB
Texas Instruments
IC FILTER 100KHZ SWITCH 20SOIC
3319 Pcs New Original In Stock
Universal Switched Capacitor Filter IC Universal Switched Capacitor 4th Order 100kHz 20-SOIC
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LMF100CIWMX/NOPB Texas Instruments
5.0 / 5.0 - (343 Ratings)

LMF100CIWMX/NOPB

Product Overview

1323089

DiGi Electronics Part Number

LMF100CIWMX/NOPB-DG

Manufacturer

Texas Instruments
LMF100CIWMX/NOPB

Description

IC FILTER 100KHZ SWITCH 20SOIC

Inventory

3319 Pcs New Original In Stock
Universal Switched Capacitor Filter IC Universal Switched Capacitor 4th Order 100kHz 20-SOIC
Quantity
Minimum 1

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In Stock (All prices are in USD)
  • QTY Target Price Total Price
  • 1 63.6322 63.6322
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LMF100CIWMX/NOPB Technical Specifications

Category Interface, Filters - Active

Manufacturer Texas Instruments

Packaging -

Series -

Product Status Obsolete

Filter Type Universal Switched Capacitor

Frequency - Cutoff or Center 100kHz

Number of Filters 2

Filter Order 4th

Voltage - Supply 4V ~ 15V

Mounting Type Surface Mount

Package / Case 20-SOIC (0.295", 7.50mm Width)

Supplier Device Package 20-SOIC

Base Product Number LMF100

Datasheet & Documents

Manufacturer Product Page

LMF100CIWMX/NOPB Specifications

HTML Datasheet

LMF100CIWMX/NOPB-DG

Environmental & Export Classification

RoHS Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Additional Information

Other Names
296-41313-6
LMF100CIWMX/NOPB-DG
LMF100CIWMX-NDR
296-41313-1
296-41313-2
Standard Package
1,000

Alternative Parts

View Details
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
LTC1060CSW#PBF
Analog Devices Inc.
2109
LTC1060CSW#PBF-DG
6.9334
MFR Recommended
LTC1060CSW#TRPBF
Analog Devices Inc.
2317
LTC1060CSW#TRPBF-DG
2.1722
MFR Recommended

Reviews

5.0/5.0-(Show up to 5 Ratings)
행***간
de desembre 02, 2025
5.0
구매 후 만족도가 높아서 주변에 추천하고 싶어요.
Poési***baine
de desembre 02, 2025
5.0
Je recommande vivement DiGi Electronics pour sa qualité, ses prix et son support client irréprochable.
こ***詩
de desembre 02, 2025
5.0
最後まで責任を持って対応してくれる姿勢に信頼を寄せています。
Wande***stWays
de desembre 02, 2025
5.0
The combination of robust packaging and precise logistics tracking makes their service reliable and stress-free.
Bri***Bell
de desembre 02, 2025
5.0
The product’s material engineering is impressive, providing both resilience and longevity.
Lun***nks
de desembre 02, 2025
5.0
Their products maintain a high standard of quality, supported by reliable after-sales.
Nov***ail
de desembre 02, 2025
5.0
Their stock management contributes significantly to our operational efficiency.
Velv***ibes
de desembre 02, 2025
5.0
Timely deliveries from DiGi Electronics help me keep my technical projects on track without stress.
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Frequently Asked Questions (FAQ)

Can I still design in the LMF100CIWMX/NOPB for new projects given that it's marked as obsolete by Texas Instruments, and what are the long-term supply and reliability risks?

Designing in the LMF100CIWMX/NOPB for new production is not recommended due to its obsolete status, which indicates TI has discontinued manufacturing and will not support future demand. While 3,300 units may be available in current inventory, this stock is finite and not replenishable. Long-term supply chain disruptions, lack of replacement parts, and potential counterfeit risks increase project risk. For new designs, consider migrating to a modern alternative like the LTC1060CSW#PBF, which offers similar switched-capacitor filter functionality with active production support, better availability, and improved noise performance.

What are the key differences between the LMF100CIWMX/NOPB and the LTC1060CSW#PBF when replacing one for the other in a 4th-order 100kHz low-pass filter application?

While both the LMF100CIWMX/NOPB and LTC1060CSW#PBF are universal switched-capacitor filters capable of 4th-order configurations around 100kHz, the LTC1060 offers lower total harmonic distortion (THD), wider clock-to-center-frequency ratio options (1:50, 1:100), and better power supply rejection. The LTC1060 also supports a broader supply range (up to ±7.5V vs. ±7.5V nominal for LMF100) and comes in a compatible 20-SOIC package. However, pin compatibility is not direct—review clock input and filter configuration pinouts carefully. When replacing, recalculate external resistor/capacitor values and verify stability under your specific clock source, as timing sensitivity differs between the two ICs.

How does the moisture sensitivity level (MSL 3) of the LMF100CIWMX/NOPB impact handling and reflow during PCB assembly, and what precautions should I take?

The LMF100CIWMX/NOPB has an MSL 3 rating, meaning it can be exposed to ambient conditions for up to 168 hours (7 days) after removal from its dry pack before requiring baking. During high-volume assembly, this limits floor life and increases risk of popcorning during reflow if moisture absorption exceeds safe levels. To mitigate risk, store unused parts in a dry cabinet (<10% RH), track exposure time rigorously, and bake at 125°C for 24 hours if the 168-hour window is exceeded. Always follow J-STD-033 guidelines—failure to do so may result in internal delamination or solder joint defects, especially in high-reliability applications like medical or automotive systems.

What design constraints should I consider when using the LMF100CIWMX/NOPB in a battery-powered system with a 5V supply, particularly regarding power supply noise and clock feedthrough?

When operating the LMF100CIWMX/NOPB on a 5V supply in battery-powered designs, pay close attention to power supply noise and clock feedthrough, which can alias into the passband and degrade signal integrity. The internal switched-capacitor architecture is sensitive to supply ripple; use a low-noise LDO with at least 40dB PSRR and place a 10µF ceramic capacitor close to the V+ pin. Additionally, the clock signal (typically 100x the cutoff frequency for 100kHz operation) must be clean and properly terminated—use a dedicated clock buffer and keep traces short to minimize coupling. Avoid sharing clock lines with digital buses, as jitter and crosstalk can modulate the filter response unpredictably.

Is the LMF100CIWMX/NOPB suitable for precision audio filtering applications above 20kHz, and what are the limitations in terms of dynamic range and distortion?

The LMF100CIWMX/NOPB is not ideal for high-fidelity audio applications above 20kHz due to inherent limitations in dynamic range and distortion. While it can be configured for 4th-order filtering up to 100kHz, its typical signal-to-noise ratio (SNR) is limited by charge injection and clock feedthrough, leading to audible artifacts in high-gain stages. Total harmonic distortion (THD) typically exceeds 0.1% at 20kHz with a 5V supply, which is unacceptable for professional audio. For precision audio, consider active RC filters using low-noise op-amps (e.g., OPA1612) or modern alternatives like the LTC1068, which offer better linearity, lower noise, and built-in anti-aliasing features—critical for maintaining audio fidelity in ADC front-ends or reconstruction filters.

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