Features
 Dual 2nd-Order Filter in a 16-Pin QSOP Package
 High Accuracy
Q Accuracy: ±0.2%
Clock-to-Center Frequency Error: ±0.2%
 Rail-to-Rail Input and Output Operation
 Single-Supply Operation: +5V (MAX7490)
or +3V (MAX7491)
 Internal or External Clock
 Highpass, Lowpass, Bandpass, and Notch Filters
 Clock-to-Center Frequency Ratio of 100:1
 Internal Sampling-to-Center Frequency Ratio
of 200:1
 Center Frequency up to 40kHz
 Easily Cascaded for Multipole Filters
 Low-Power Shutdown: < 1μA Supply Current