General Description

The MAX7426/MAX7427 5th-order, lowpass, elliptic, switched-capacitor filters (SCFs) operate from a single +5V (MAX7426) or +3V (MAX7427) supply. The devices draw only 0.8mA of supply current and allow corner fre quencies from 1Hz to 12kHz, making them ideal for low-power post-DAC filtering and anti-aliasing applica tions. They can be put into a low-power mode, reducing supply current to 0.2µA.

Features

♦ 5th-Order, Elliptic Lowpass Filters

♦ Low Noise and Distortion: -80dB THD + Noise

♦ Clock-Tunable Corner Frequency (1Hz to 12kHz)

♦ Single-Supply Operation

    +5V (MAX7426)

    +3V (MAX7427)

♦ Low Power

    0.8mA (Operating Mode)

    0.2µA (Shutdown Mode)

♦ Available in 8-Pin µMAX/PDIP Packages

♦ Low Output Offset: ±4mV

Applications

ADC Anti-Aliasing

CT2 Base Stations

Post-DAC Filtering

Speech Processing