MF4 Datasheet (National) - 4th Order Switched Capacitor Butterworth Lowpass Filter

MF4, 4th Order Switched Capacitor Butterworth Lowpass Filter

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.

MF4 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 inp