Microprocessor Programmable Universal Active Filters
19-0352; Rev 2; 7/02
MAX260/MAX261/MAX262
Microprocessor Programmable Universal Active Filters
General Description
Th...
Description
19-0352; Rev 2; 7/02
MAX260/MAX261/MAX262
Microprocessor Programmable Universal Active Filters
General Description
The MAX260/MAX261/MAX262 CMOS dual secondorder universal switched-capacitor active filters allow microprocessor control of precise filter functions. No external components are required for a variety of bandpass, lowpass, highpass, notch, and allpass configurations. Each device contains two second-order filter sections that place center frequency, Q, and filter operating mode under programmed control.
An input clock, along with a 6-bit f0 program input, determine the filter's center or corner frequency without affecting other filter parameters. The filter Q is also programmed independently. Separate clock inputs for each filter section operate with either a crystal, RC network, or external clock generator.
The MAX260 has offset and DC specifications superior to the MAX261 and MAX262 and a center frequency (f0) range of 7.5kHz. The MAX261 handles center frequencies to 57k...
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