LMF40CIN-50 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
Texas Instruments LMF40CIN-50 is a switched-capacitor active filter IC with a center frequency range up to 40 kHz, operating from a dual supply of ±2 V to ±7 V, designed for precision signal filtering in audio and industrial analog signal processing applications.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- LMF40CIN-50 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Non-compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LMF40CIN-50?
- Switched-capacitor active filter with center/cutoff frequency range up to 40 kHz
- Dual supply voltage range: ±2 V to ±7 V
- 8-pin PDIP package for easy through-hole prototyping
- Clock-tunable cutoff frequency for flexible filter design
- Low external component count simplifies PCB layout
What is LMF40CIN-50 used for?
The LMF40CIN-50 is suited for precision analog signal processing in audio equipment, data acquisition front-ends, and industrial sensor interfaces requiring stable bandpass or low-pass filtering. Its clock-tunable frequency response makes it practical for designs where the filter cutoff must be adjusted dynamically or programmed at board level.
What are the specifications of LMF40CIN-50?
| Reach Compliance Code | Unknown |
| YTEOL | 0 |
| Active Filter Type | SWITCHED CAPACITOR FILTER |
| Center or Cutoff Freq Rng-Max | 40kHz |
| Center or Cutoff Freq Rng-Min | 0.0001kHz |
| JESD-30 Code | R-PDIP-T8 |
| JESD-609 Code | e0 |
| Neg Supply Voltage-Max (Vsup) | -7 V |
| Neg Supply Voltage-Min (Vsup) | -2 V |
| Neg Supply Voltage-Nom (Vsup) | -5 V |
| Number of Functions | 1 |
| Order | 4TH |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Poles and Zeros | 4 AND 0 |
| Qualification Status | Not Qualified |
| Response | LOWPASS |
| Supply Current-Max (Isup) | 5mA |
| Supply Voltage-Max (Vsup) | 7V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | TIN LEAD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Transfer Characteristics | BUTTERWORTH |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Non-compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the LMF40CIN-50 datasheet?
LMF40CIN-50 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LMF40CIN-50?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum clock-tunable cutoff frequency achievable with the LMF40CIN-50?
The LMF40CIN-50 supports a center or cutoff frequency range up to 40 kHz, with the cutoff set by an external clock signal, allowing designers to tune the filter response from as low as 0.0001 kHz up to 40 kHz without changing passive components.
Which supply voltage configurations are compatible with the LMF40CIN-50 in a dual-supply design?
The LMF40CIN-50 operates from a negative supply of -2 V to -7 V and a corresponding positive rail, with a nominal negative supply of -5 V. This dual ±5 V configuration is standard in many analog signal chain and audio filter designs.
How does the 8-pin PDIP package of the LMF40CIN-50 affect prototyping and small-batch production?
The R-PDIP-T8 (8-pin dual in-line package) used for LMF40CIN-50 is directly compatible with standard breadboards and DIP sockets, making prototype assembly straightforward. Its 8 pins accommodate the filter input, output, clock, and supply connections with no additional passive network required.
In what industrial or audio applications is a switched-capacitor filter like the LMF40CIN-50 preferred over an active RC filter?
Switched-capacitor filters such as the LMF40CIN-50 are preferred in applications requiring precise, clock-programmable cutoff frequencies without trimming resistors or capacitors, including anti-aliasing filters for 12-bit ADCs operating up to 40 kHz, audio tone control circuits, and industrial sensor signal conditioning where the cutoff must track a system clock.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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