MAX7401CSA 데이터 시트보기 (PDF) - Maxim Integrated
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MAX7401CSA Datasheet PDF : 12 Pages
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8th-Order, Lowpass, Bessel,
Switched-Capacitor Filters
ELECTRICAL CHARACTERISTICS—MAX7405 (continued)
(VDD = +3V, filter output measured at OUT, 10kΩ || 50pF load to GND at OUT, OS = COM, 0.1µF 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 4)
26
34
43
kHz
Clock Input Current
ICLK VCLK = 0 or 3V
±15 ±30
µA
Clock Input High
VIH
VDD - 0.5
V
Clock Input Low
VIL
0.5
V
POWER REQUIREMENTS
Supply Voltage
VDD
2.7
3.6
V
Supply Current
Shutdown Current
Power-Supply Rejection Ratio
IDD
ISHDN
PSRR
Operating mode, no load, IN = OS = COM
SHDN = GND, CLK driven from 0 to VDD
Measured at DC
2
3.5
mA
0.2
1
µA
60
dB
SHUTDOWN
SHDN Input High
SHDN Input Low
SHDN Input Leakage Current
VSDH
VSDL
V SHDN = 0 to VDD
VDD - 0.5
V
0.5
V
±0.1 ±10
µA
FILTER CHARACTERISTICS—MAX7401/MAX7405
(VDD = +5V for MAX7401, VDD = +3V for MAX7405; 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.)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
fIN = 0.5fC
-1.0 -0.8 -0.6
Insertion Gain Relative to
DC Gain
fIN = fC
fIN = 3fC
-3.3 -3.0 -2.7
dB
-33
-29
fIN = 6fC
-79
-74
Note 1: The maximum fC is defined as the clock frequency, fCLK = 100 · fC, at which the peak SINAD drops to 68dB with a sinu-
soidal input at 0.2fC.
Note 2: DC insertion gain is defined as ∆VOUT / ∆VIN.
Note 3: OS voltages above VDD - 1V saturate the input and result in a 75µA typical input leakage current.
Note 4: For MAX7401, fOSC (kHz) ≅38 · 103 / COSC (pF). For MAX7405, fOSC (kHz) ≅34 · 103 / COSC (pF).
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