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MF4CN-50 - MF4 4th Order Switched Capacitor Butterworth Lowpass Filter

General Description

The MF4 is a versatile, easy to use, precision 4th order Butterworth low-pass filter.

Switched-capacitor techniques eliminate external component requirements and allow a clock-tunable cutoff frequency.

The ratio of the clock frequency to the low-pass cutoff frequency is internally set to 50 to 1.

Key Features

  • n n n n n n n n n Low Cost Easy to use 8-pin mini-DIP or 14-pin wide-body S. O. No external components 5V to 14V supply voltage Cutoff frequency range of 0.1 Hz to 20 kHz Cutoff frequency accuracy of ± 0.3% typical Cutoff frequency set by external clock Separate TTL and CMOS/Schmitt-trigger clock inputs Connection Diagram Dual-In-Line Package DS005064-2 Order Number MF4CN-50 See NS Package Number N08E Block Diagram DS005064-1 TRI-STATE ® is a registered trademark of National Semiconductor C.

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Datasheet Details

Part number MF4CN-50
Manufacturer National
File Size 466.30 KB
Description MF4 4th Order Switched Capacitor Butterworth Lowpass Filter
Datasheet download datasheet MF4CN-50 Datasheet

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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MF4 4th Order Switched Capacitor Butterworth Lowpass Filter July 1999 MF4 4th Order Switched Capacitor Butterworth Lowpass Filter General Description The MF4 is a versatile, easy to use, precision 4th order Butterworth low-pass filter. Switched-capacitor techniques eliminate external component requirements and allow a clock-tunable cutoff frequency. The ratio of the clock frequency to the low-pass cutoff frequency is internally set to 50 to 1. A Schmitt trigger clock input stage allows two clocking options, either self-clocking (via an external resistor and capacitor) for stand-alone applications, or for tighter cutoff frequency control an external TTL or CMOS logic compatible clock can be applied.