MAX7400ESA

General Description

The MAX7400/MAX7403/MAX7404/MAX7407 8th-order, lowpass, elliptic, switched-capacitor filters (SCFs) oper-ate from a single +5V(MAX7400/MAX7403) or +3V(MAX7404/MAX7407) supply. These devices draw 2mA of supply current and allow corner frequencies from1Hz to 10kHz, making them ideal for low-power anti-aliasing and post-DAC filtering applications.

They fea-ture a shutdown mode that reduces the supply current to 0.2uA.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 MAX7400/MAX7404 provide 82dB of stopband rejection and a sharp rolloff with a transition ratio of 1.5.
The MAX7403/MAX7407 provide a sharper 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. The MAX7400/
MAX7403/MAX7404/MAX7407 are available in 8-pin SO and DIP packages.

Applications
ADC Anti-Aliasing      Speech Processing
Post-DAC Filtering      Air-Bag Electronics
CT2 Base Stations

Features

8th-Order Lowpass Elliptic Filter Low Noise and Distortion-82dB THD+Noise(MAX7400)
Clock-Tunable Corner Frequency(1Hz to 10kHz)
◆100:1 Clock-to-Corner Ratlo
◆Single-Supply Operation+5V(MAX7400/MAX7403)+3V(MAX7404/MAX7407)Low Power
2mA(Operating Mode)
0.2uA(Shutdown Mode)
Available in 8-Pin SO and DIP Packages Low Output Offset:±5mV

Feature

Applications