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MAX7412EUA Datasheet(PDF) 5 Page - Maxim Integrated Products |
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MAX7412EUA Datasheet(HTML) 5 Page - Maxim Integrated Products |
5 / 12 page 5th-Order, Lowpass, Elliptic, Switched-Capacitor Filters _______________________________________________________________________________________ 5 ELLIPTIC FILTER (r = 1.25) CHARACTERISTICS—MAX7411/MAX7415 (VDD = +5V for MAX7411, VDD = +3V for MAX7415; filter output measured at OUT; 10kΩ || 50pF load to GND at OUT; SHDN = VDD, VCOM = VOS = VDD / 2; fCLK = 100kHz; TA = TMIN to TMAX; unless otherwise noted. Typical values are at TA = +25°C.) (Note 3) Note 1: The maximum fC is defined as the clock frequency fCLK = 100 · fC at which the peak SINAD drops to 68dB with a sinusoidal input at 0.2fC. Note 2: DC insertion gain is defined as ∆VOUT / ∆VIN. Note 3: fOSC (kHz) ≈ 27 · 103 / COSC (COSC in pF). Note 4: The input frequencies, fIN, are selected at the peaks and troughs of the ideal elliptic frequency responses. fIN = 0.68fC fIN = 0.38fC fIN = 3.25fC fIN = 1.43fC fIN = 1.25fC fIN = 0.87fC fIN = 0.97fC fIN = fC CONDITIONS -0.4 0.2 0.4 dB -0.4 -0.2 0.4 Insertion Gain with DC Gain Error Removed (Note 4) -37.2 -35 -37.2 -35 -38.5 -34 -0.4 -0.2 0.4 -0.4 0.2 0.4 -0.7 -0.2 0.2 UNITS MIN TYP MAX PARAMETER -120 -100 -80 -20 0 -40 -60 20 0 1 2 3 4 5 MAX7408/MAX7412 FREQUENCY RESPONSE INPUT FREQUENCY (kHz) fC = 1kHz r = 1.6 -120 -100 -80 -20 0 -40 -60 20 0 1 2 3 4 5 MAX7411/MAX7415 FREQUENCY RESPONSE INPUT FREQUENCY (kHz) fC = 1kHz r = 1.25 -1.2 -1.0 -0.8 -0.2 0 -0.4 -0.6 0.2 0 204 408 612 816 1.02k MAX7408/MAX7412 PASSBAND FREQUENCY RESPONSE INPUT FREQUENCY (Hz) fC = 1kHz r = 1.6 Typical Operating Characteristics (VDD = +5V for MAX7408/MAX7411, VDD = +3V for MAX7412/MAX7415; fCLK = 100kHz; SHDN = VDD; VCOM = VOS = VDD / 2; TA = +25°C; unless otherwise noted.) |
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