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LMF60CIWM-100 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LMF60CIWM-100 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 20 page  TLH9294 May 1996 LMF60 High Performance 6th-Order Switched Capacitor Butterworth Lowpass Filter General Description The LMF60 is a high performance precision 6th-order But- terworth lowpass active filter It is fabricated using Nation- al’s LMCMOS process an improved silicon-gate CMOS pro- cess specifically designed for analog products Switched- capacitor techniques eliminate external component require- ments and allow a clock-tunable cutoff frequency The ratio of the clock frequency to the low-pass cutoff frequency is internally set to 501 (LMF60-50) or 1001 (LMF60-100) A Schmitt trigger clock input stage allows two clocking op- tions either self-clocking (via an external resistor and ca- pacitor) for stand-alone applications or for tighter cutoff fre- quency control a TTL or CMOS logic compatible clock can be directly applied The maximally flat passband frequency response together with a DC gain of 1VV allows cascading LMF60 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 appli- cations The LMF60 is pin- and functionally-compatible with the MF6 but provides improved performance Features Y Cutoff frequency range of 01 Hz to 30 kHz Y Cutoff frequency accuracy of g10% maximum Y Low offset voltage g100 mV maximum g5V supply Y Low clock feedthrough of 10 mVp–p typical Y Dynamic range of 88 dB typical Y Two uncommitted op amps available Y No external components required Y 14-pin DIP or 14-pin wide-body SO package Y SingleDual Supply Operation a 4V to a14V (g2V to g7V) Y Cutoff frequency set by external or internal clock Y Pin-compatible with the MF6 Applications Y Communication systems Y Audio filtering Y Anti-alias filtering Y Data acquisition noise filtering Y Instrumentation Y High-order tracking filters Block and Connection Diagrams TLH9294 – 1 All Packages TLH9294 – 2 Top View Order Number LMF60CMJ-50 (5962-9096 701MCA or LMF60CMJ50883) LMF60CMJ-100 or (5962-9096 702MCA or LMF60CMJ100883) See NS Package Number J14A Order Number LMF60CIWM-50 or LMF60CIWM-100 See NS Package Number M14B Order Number LMF60CIN-50 or LMF60CIN-100 See NS Package Number N14A TRI-STATE is a registered trademark of National Semiconductor Corporation C1996 National Semiconductor Corporation RRD-B30M56Printed in U S A |
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