700-MAX7408EUA

The MAX7408/MAX7411/MAX7412/MAX7415 5th-order,

lowpass, elliptic, switched-capacitor filters (SCFs) operate

from a single +5V (MAX7408/MAX7411) or +3V

(MAX7412/MAX7415) supply. The devices draw only

1.2mA of supply current and allow corner frequencies

from 1Hz to 15kHz, making them ideal for low-power

post-DAC filtering and anti-aliasing applications. They

can be put into a low-power mode, reducing supply

current to 0.2?A.

Two clocking options are available: self-clocking (through

the use of an external capacitor) or external clocking for

tighter cutoff-frequency control. An offset-adjust pin

allows for adjustment of the DC output level.

The MAX7408/MAX7412 deliver 53dB of stopband

rejection and a sharp rolloff with a transition ratio of 1.6.

The MAX7411/MAX7415 achieve a sharper rolloff with a

transition ratio of 1.25 while still providing 37dB of stopband

rejection. Their fixed response limits the design

task to selecting a clock frequency.