Datasheet MAX7409, MAX7410, MAX7413, MAX7414 (Maxim) - 4

5th-Order, Lowpass, Switched-Capacitor Filters ELECTRICAL CHARACTERISTICS—MAX7413/MAX7414 (continued)
(VDD = +3V, filter output measured at OUT pin, 10kΩ || 50pF load to GND at OUT, OS = COM, 0.1µF capacitor from COM to GND, SHDN = VDD, fCLK = 100kHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS CLOCK
Internal Oscillator Frequency fOSC COSC = 1000pF (Note 3) 21 30 38 kHz Clock Output Current ICLK VCLK = 0 or 3V ±13.5 ±20 µA (Internal Oscillator Mode) Clock Input High VIH 2.5 V Clock Input Low VIL 0.5 V
POWER REQUIREMENTS
Supply Voltage VDD 2.7 3.6 V Supply Current IDD Operating mode, no load 1.2 1.5 mA Shutdown Current ISHDN SHDN = GND 0.2 1 µA Power-Supply Rejection Ratio PSRR IN = COM (Note 4) 70 dB
SHUTDOWN
SHDN Input High VSDH 2.5 V SHDN Input Low VSDL 0.5 V SHDN Input Leakage Current V SHDN= 0 to VDD 0.2 ±10 µA
FILTER CHARACTERISTICS
(VDD = +5V for MAX7409/MAX7410, VDD = +3V for MAX7413/MAX7414, filter output measured at OUT, 10kΩ || 50pF load to GND at OUT, SHDN = VDD, fCLK = 100kHz, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER CONDITIONS MIN TYP MAX UNITS BESSEL FILTERS—MAX7409/MAX7413
fIN = 0.5fC -1 -0.74 f Insertion Gain Relative to IN = fC -3.6 -3.0 -2.4 dB DC Gain fIN = 4fC -41.0 -35 fIN = 7fC -64.3 -58
MAX7409/MAX7410/MAX7413/MAX7414 BUTTERWORTH FILTERS—MAX7410/MAX7414
fIN = 0.5fC -0.3 0 Insertion Gain Relative to fIN = fC -3.6 -3.0 -2.4 dB DC Gain fIN = 3fC -47.5 -43 fIN = 5fC -70 -65
Note 1:
The maximum fC is defined as the clock frequency fCLK = 100 x fC at which the peak S / (THD+N) drops to 68dB with a sinusoidal input at 0.2fC.
Note 2:
DC insertion gain is defined as ∆VOUT / ∆VIN.
Note 3:
fOSC (kHz) ≅ 30 x 103 / COSC (pF).
Note 4:
PSRR is the change in output voltage from a VDD of 4.5V and a VDD of 5.5V.
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