Product description
The MAX7403 is a 8th-order, lowpass, elliptic, switched-capacitor filter which can operate from a single +5V supply. Its current draw is 2mA and allows corner frequencies from 1Hz to 10kHz, making it ideal for low-power anti-aliasing and post-DAC filtering applications. It also features a shutdown mode that reduces the 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. In addition,
an offset adjustment pin (OS) allows for the adjustment of the DC output level.
The MAX7403 provides a sharp rolloff with a transition ratio of 1.2, while still delivering 60dB of stop-band rejection. The fixed response of these devices simplifies the design task to corner-frequency selection by setting a clock frequency.
Two clocking options are available: self-clocking (through the use of an external capacitor) or external clocking, for tighter cutoff-frequency control. In addition,
an offset adjustment pin (OS) allows for the adjustment of the DC output level.
The MAX7403 provides a sharp rolloff with a transition ratio of 1.2, while still delivering 60dB of stop-band rejection. The fixed response of these devices simplifies the design task to corner-frequency selection by setting a clock frequency.