MAX7480

19-1416; Rev 0; 1/99 8th-Order, Lowpass, Butterworth, Switched-Capacitor Filter General Description The MAX7480 8th-order, lowpass, Butterworth, switched-capacitor filter (SCF) operates from a single +5V supply. The device draws only 2.9mA of supply current and allows corner frequencies from 1Hz to 2kHz, making it ideal for low-power post-DAC filtering and anti-aliasing applications. The MAX7480 features a shutdown mode, which reduces the supply current to 0.2µA. Two clocking options are available: self-clocking (through the use of an external capacitor) or external clocking for tighter corner-frequency control. An offset adjust pin allows for adjustment of the DC output level. The MAX7480 Butterworth filter provides a maximally flat passband response. The fixed response simplifies the design task to selecting a clock frequency. Features o 8th-Order, Lowpass Butterworth Filter o Low Noise and Distortion: -73dB THD + Noise o Clock-Tunable Corner Frequency (1Hz to 2kHz) o 100:1 Clock-to-Corner Ratio o +5V Single-Supply Operation o Low Power 2.9mA (Operating Mode) 0.2µA (Shutdown Mode) o Available in 8-Pin SO/DIP Package o Low Output Offset: ±5mV MAX7480 Applications ADC Anti-Aliasing Post-DAC Filtering PART MAX7480ESA MAX7480EPA Ordering Information TEMP. RANGE -40°C to +85°C -40°C to +85°C PIN-PACKAGE 8 SO 8 Plastic DIP Pin Configuration TOP VIEW VSUPPLY COM 1 IN 2 8 7 CLK SHDN OS OUT INPUT 0.1µF Typical Operating Circuit VDD IN SHDN OUT OUTPUT MAX7480 GND 3 6 5 VDD ...