GENERAL DESCRIPTION
Switched-capacitor techniques eliminate external component requirements and allow a clock-tunable cutoff frequency. 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. 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 Corp. © 1999 National Semiconductor Corporation DS005064 Block Diagram Pin Pin Name CLK IN (Continued) Pin Pin Name FILTER IN Function The input to the low-pass filter.
National Semiconductor
