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MF6 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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MF6 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 20 page  MF6 6th Order Switched Capacitor Butterworth Lowpass Filter General Description The MF6 is a versatile easy to use, precision 6th order But- terworth lowpass active filter. Switched capacitor techniques eliminate external component requirements and allow a clock tunable cutoff frequency. The ratio of the clock fre- quency to the lowpass cutoff frequency is internally set to 50 to 1 (MF6-50) or 100 to 1 (MF6-100). A Schmitt trigger clock input stage allows two clocking options, either self-clocking (via an external resistor and capacitor) for stand-alone appli- cations, or an external TTL or CMOS logic compatible clock can be used for tighter cutoff frequency control. The maxi- mally flat passband frequency response together with a DC gain of 1 V/V allows cascading MF6 sections for higher order filtering. In addition to the filter, two independent CMOS op amps are included on the die and are useful for any general signal conditioning applications. Features n No external components n Cutoff frequency accuracy of ±0.3% typical n Cutoff frequency range of 0.1 Hz to 20 kHz n Two uncommitted op amps available n 5V to 14V total supply voltage n Cutoff frequency set by external or internal clock Block and Connection Diagrams TRI-STATE® is a registered trademark of National Semiconductor Corporation. All Packages DS005065-2 Top View Order Number MF6CWM-50 or MF6CWM-100 See NS Package Number M14B DS005065-1 June 1999 © 1999 National Semiconductor Corporation DS005065 www.national.com |
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