MAX7408, MAX7411, MAX7412, MAX7415 5th Order, Lowpass, Elliptic, Switched-Capacitor Filters
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 all 700 ow 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 0.2A.
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 stop-band rejection. Their fixed response limits the design task to selecting a Clock frequency.
By Maxim Integrated Products
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