MAX7407CSA+

The MAX7407CSA+ is an 8th order, low pass, elliptic switched capacitor filter (SCF) in 8 pin NSOIC package. This device operates from a single +3V supply. It draws 2mA of supply current and allows corner frequencies from 1Hz to 10KHz and it is ideal for low power antialiasing and post DAC filtering applications. The MAX7407 feature shutdown mode that reduces supply current to 0.2µA. Two clocking options are available, self clocking (through the use of an external capacitor) or external clocking for tighter cut-off frequency control. In addition, an offset adjustment pin (OS) allows for adjustment of DC output level. The device provides sharper roll-off with transition ratio of 1.2 while still delivering 60dB of stopband rejection. The fixed response of this device simplifies the design task to corner frequency selection by setting clock frequency. The MAX7407 is used in ADC anti aliasing, CT2 base stations, speech processing and air bag electronics.